diff --git a/target/linux/generic/backport-6.6/790-01-v6.7-net-dsa-mt7530-Convert-to-platform-remove-callback-r.patch b/target/linux/generic/backport-6.6/790-01-v6.7-net-dsa-mt7530-Convert-to-platform-remove-callback-r.patch new file mode 100644 index 0000000000..95c6957596 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-01-v6.7-net-dsa-mt7530-Convert-to-platform-remove-callback-r.patch @@ -0,0 +1,58 @@ +From b91ef50f70e7c092c50c1b92e63ef3fb0041cdd4 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= +Date: Mon, 18 Sep 2023 21:19:12 +0200 +Subject: [PATCH 01/30] net: dsa: mt7530: Convert to platform remove callback + returning void +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The .remove() callback for a platform driver returns an int which makes +many driver authors wrongly assume it's possible to do error handling by +returning an error code. However the value returned is ignored (apart +from emitting a warning) and this typically results in resource leaks. +To improve here there is a quest to make the remove callback return +void. In the first step of this quest all drivers are converted to +.remove_new() which already returns void. Eventually after all drivers +are converted, .remove_new() is renamed to .remove(). + +Trivially convert this driver from always returning zero in the remove +callback to the void returning variant. + +Signed-off-by: Uwe Kleine-König +Reviewed-by: Andrew Lunn +Reviewed-by: Florian Fainelli +Acked-by: Daniel Golle +Signed-off-by: David S. Miller +--- + drivers/net/dsa/mt7530-mmio.c | 7 ++----- + 1 file changed, 2 insertions(+), 5 deletions(-) + +--- a/drivers/net/dsa/mt7530-mmio.c ++++ b/drivers/net/dsa/mt7530-mmio.c +@@ -63,15 +63,12 @@ mt7988_probe(struct platform_device *pde + return dsa_register_switch(priv->ds); + } + +-static int +-mt7988_remove(struct platform_device *pdev) ++static void mt7988_remove(struct platform_device *pdev) + { + struct mt7530_priv *priv = platform_get_drvdata(pdev); + + if (priv) + mt7530_remove_common(priv); +- +- return 0; + } + + static void mt7988_shutdown(struct platform_device *pdev) +@@ -88,7 +85,7 @@ static void mt7988_shutdown(struct platf + + static struct platform_driver mt7988_platform_driver = { + .probe = mt7988_probe, +- .remove = mt7988_remove, ++ .remove_new = mt7988_remove, + .shutdown = mt7988_shutdown, + .driver = { + .name = "mt7530-mmio", diff --git a/target/linux/generic/backport-6.6/790-02-v6.7-net-dsa-mt753x-remove-mt753x_phylink_pcs_link_up.patch b/target/linux/generic/backport-6.6/790-02-v6.7-net-dsa-mt753x-remove-mt753x_phylink_pcs_link_up.patch new file mode 100644 index 0000000000..9f0937b810 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-02-v6.7-net-dsa-mt753x-remove-mt753x_phylink_pcs_link_up.patch @@ -0,0 +1,51 @@ +From d22c85764665af931c5c61bbe282b4116a88e792 Mon Sep 17 00:00:00 2001 +From: "Russell King (Oracle)" +Date: Wed, 27 Sep 2023 13:13:56 +0100 +Subject: [PATCH 02/30] net: dsa: mt753x: remove mt753x_phylink_pcs_link_up() + +Remove the mt753x_phylink_pcs_link_up() function for two reasons: + +1) priv->pcs[i].pcs.neg_mode is set true, meaning it doesn't take a + MLO_AN_FIXED anymore, but one of PHYLINK_PCS_NEG_*. However, this + is inconsequential due to... +2) priv->pcs[port].pcs.ops is always initialised to point at + mt7530_pcs_ops, which does not have a pcs_link_up() member. + +So, let's remove mt753x_phylink_pcs_link_up() entirely. + +Signed-off-by: Russell King (Oracle) +Reviewed-by: Vladimir Oltean +Reviewed-by: Florian Fainelli +Link: https://lore.kernel.org/r/E1qlTQS-008BWe-Va@rmk-PC.armlinux.org.uk +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 11 ----------- + 1 file changed, 11 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2860,15 +2860,6 @@ static void mt753x_phylink_mac_link_down + mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); + } + +-static void mt753x_phylink_pcs_link_up(struct phylink_pcs *pcs, +- unsigned int mode, +- phy_interface_t interface, +- int speed, int duplex) +-{ +- if (pcs->ops->pcs_link_up) +- pcs->ops->pcs_link_up(pcs, mode, interface, speed, duplex); +-} +- + static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface, +@@ -2956,8 +2947,6 @@ mt7531_cpu_port_config(struct dsa_switch + return ret; + mt7530_write(priv, MT7530_PMCR_P(port), + PMCR_CPU_PORT_SETTING(priv->id)); +- mt753x_phylink_pcs_link_up(&priv->pcs[port].pcs, MLO_AN_FIXED, +- interface, speed, DUPLEX_FULL); + mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL, + speed, DUPLEX_FULL, true, true); + diff --git a/target/linux/generic/backport-6.6/790-03-v6.7-net-dsa-mt7530-replace-deprecated-strncpy-with-ethto.patch b/target/linux/generic/backport-6.6/790-03-v6.7-net-dsa-mt7530-replace-deprecated-strncpy-with-ethto.patch new file mode 100644 index 0000000000..2da610ea42 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-03-v6.7-net-dsa-mt7530-replace-deprecated-strncpy-with-ethto.patch @@ -0,0 +1,40 @@ +From 9b4f1f5a0801652056670a38503b4049eb413caf Mon Sep 17 00:00:00 2001 +From: Justin Stitt +Date: Mon, 9 Oct 2023 18:29:19 +0000 +Subject: [PATCH 03/30] net: dsa: mt7530: replace deprecated strncpy with + ethtool_sprintf + +`strncpy` is deprecated for use on NUL-terminated destination strings +[1] and as such we should prefer more robust and less ambiguous string +interfaces. + +ethtool_sprintf() is designed specifically for get_strings() usage. +Let's replace strncpy in favor of this more robust and easier to +understand interface. + +Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] +Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] +Link: https://github.com/KSPP/linux/issues/90 +Signed-off-by: Justin Stitt +Reviewed-by: Kees Cook +Acked-by: Daniel Golle +Reviewed-by: Florian Fainelli +Reviewed-by: AngeloGioacchino Del Regno +Link: https://lore.kernel.org/r/20231009-strncpy-drivers-net-dsa-mt7530-c-v1-1-ec6677a6436a@google.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 3 +-- + 1 file changed, 1 insertion(+), 2 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -836,8 +836,7 @@ mt7530_get_strings(struct dsa_switch *ds + return; + + for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) +- strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name, +- ETH_GSTRING_LEN); ++ ethtool_sprintf(&data, "%s", mt7530_mib[i].name); + } + + static void diff --git a/target/linux/generic/backport-6.6/790-04-v6.9-net-dsa-mt7530-support-OF-based-registration-of-swit.patch b/target/linux/generic/backport-6.6/790-04-v6.9-net-dsa-mt7530-support-OF-based-registration-of-swit.patch new file mode 100644 index 0000000000..83738408eb --- /dev/null +++ b/target/linux/generic/backport-6.6/790-04-v6.9-net-dsa-mt7530-support-OF-based-registration-of-swit.patch @@ -0,0 +1,116 @@ +From af26b0d1bf934bbaa7cafb871a51e95087a088a0 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:34:31 +0300 +Subject: [PATCH 04/30] net: dsa: mt7530: support OF-based registration of + switch MDIO bus +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Currently the MDIO bus of the switches the MT7530 DSA subdriver controls +can only be registered as non-OF-based. Bring support for registering the +bus OF-based. + +The subdrivers that control switches [with MDIO bus] probed on OF must +follow this logic to support all cases properly: + +No switch MDIO bus defined: Populate ds->user_mii_bus, register the MDIO +bus, set the interrupts for PHYs if "interrupt-controller" is defined at +the switch node. This case should only be covered for the switches which +their dt-bindings documentation didn't document the MDIO bus from the +start. This is to keep supporting the device trees that do not describe the +MDIO bus on the device tree but the MDIO bus is being used nonetheless. + +Switch MDIO bus defined: Don't populate ds->user_mii_bus, register the MDIO +bus, set the interrupts for PHYs if ["interrupt-controller" is defined at +the switch node and "interrupts" is defined at the PHY nodes under the +switch MDIO bus node]. + +Switch MDIO bus defined but explicitly disabled: If the device tree says +status = "disabled" for the MDIO bus, we shouldn't need an MDIO bus at all. +Instead, just exit as early as possible and do not call any MDIO API. + +The use of ds->user_mii_bus is inappropriate when the MDIO bus of the +switch is described on the device tree [1], which is why we don't populate +ds->user_mii_bus in that case. + +Link: https://lore.kernel.org/netdev/20231213120656.x46fyad6ls7sqyzv@skbuf/ [1] +Suggested-by: David Bauer +Signed-off-by: Arınç ÜNAL +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122053431.7751-1-arinc.unal@arinc9.com +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 34 ++++++++++++++++++++++++++-------- + 1 file changed, 26 insertions(+), 8 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2182,24 +2182,40 @@ mt7530_free_irq_common(struct mt7530_pri + static void + mt7530_free_irq(struct mt7530_priv *priv) + { +- mt7530_free_mdio_irq(priv); ++ struct device_node *mnp, *np = priv->dev->of_node; ++ ++ mnp = of_get_child_by_name(np, "mdio"); ++ if (!mnp) ++ mt7530_free_mdio_irq(priv); ++ of_node_put(mnp); ++ + mt7530_free_irq_common(priv); + } + + static int + mt7530_setup_mdio(struct mt7530_priv *priv) + { ++ struct device_node *mnp, *np = priv->dev->of_node; + struct dsa_switch *ds = priv->ds; + struct device *dev = priv->dev; + struct mii_bus *bus; + static int idx; +- int ret; ++ int ret = 0; ++ ++ mnp = of_get_child_by_name(np, "mdio"); ++ ++ if (mnp && !of_device_is_available(mnp)) ++ goto out; + + bus = devm_mdiobus_alloc(dev); +- if (!bus) +- return -ENOMEM; ++ if (!bus) { ++ ret = -ENOMEM; ++ goto out; ++ } ++ ++ if (!mnp) ++ ds->slave_mii_bus = bus; + +- ds->slave_mii_bus = bus; + bus->priv = priv; + bus->name = KBUILD_MODNAME "-mii"; + snprintf(bus->id, MII_BUS_ID_SIZE, KBUILD_MODNAME "-%d", idx++); +@@ -2210,16 +2226,18 @@ mt7530_setup_mdio(struct mt7530_priv *pr + bus->parent = dev; + bus->phy_mask = ~ds->phys_mii_mask; + +- if (priv->irq) ++ if (priv->irq && !mnp) + mt7530_setup_mdio_irq(priv); + +- ret = devm_mdiobus_register(dev, bus); ++ ret = devm_of_mdiobus_register(dev, bus, mnp); + if (ret) { + dev_err(dev, "failed to register MDIO bus: %d\n", ret); +- if (priv->irq) ++ if (priv->irq && !mnp) + mt7530_free_mdio_irq(priv); + } + ++out: ++ of_node_put(mnp); + return ret; + } + diff --git a/target/linux/generic/backport-6.6/790-05-v6.9-net-dsa-mt7530-always-trap-frames-to-active-CPU-port.patch b/target/linux/generic/backport-6.6/790-05-v6.9-net-dsa-mt7530-always-trap-frames-to-active-CPU-port.patch new file mode 100644 index 0000000000..56953fb364 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-05-v6.9-net-dsa-mt7530-always-trap-frames-to-active-CPU-port.patch @@ -0,0 +1,125 @@ +From 617b07e08bcb1f69a72a085a7d847d1ca2999830 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:35:52 +0300 +Subject: [PATCH 05/30] net: dsa: mt7530: always trap frames to active CPU port + on MT7530 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +On the MT7530 switch, the CPU_PORT field indicates which CPU port to trap +frames to, regardless of the affinity of the inbound user port. + +When multiple CPU ports are in use, if the DSA conduit interface is down, +trapped frames won't be passed to the conduit interface. + +To make trapping frames work including this case, implement +ds->ops->conduit_state_change() on this subdriver and set the CPU_PORT +field to the numerically smallest CPU port whose conduit interface is up. +Introduce the active_cpu_ports field to store the information of the active +CPU ports. Correct the macros, CPU_PORT is bits 4 through 6 of the +register. + +Add a comment to explain frame trapping for this switch. + +Currently, the driver doesn't support the use of multiple CPU ports so this +is not necessarily a bug fix. + +Suggested-by: Vladimir Oltean +Suggested-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-1-042401f2b279@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 35 +++++++++++++++++++++++++++++++---- + drivers/net/dsa/mt7530.h | 6 ++++-- + 2 files changed, 35 insertions(+), 6 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1071,10 +1071,6 @@ mt753x_cpu_port_enable(struct dsa_switch + mt7530_set(priv, MT7530_MFC, BC_FFP(BIT(port)) | UNM_FFP(BIT(port)) | + UNU_FFP(BIT(port))); + +- /* Set CPU port number */ +- if (priv->id == ID_MT7530 || priv->id == ID_MT7621) +- mt7530_rmw(priv, MT7530_MFC, CPU_MASK, CPU_EN | CPU_PORT(port)); +- + /* Add the CPU port to the CPU port bitmap for MT7531 and the switch on + * the MT7988 SoC. Trapped frames will be forwarded to the CPU port that + * is affine to the inbound user port. +@@ -3128,6 +3124,36 @@ static int mt753x_set_mac_eee(struct dsa + return 0; + } + ++static void ++mt753x_conduit_state_change(struct dsa_switch *ds, ++ const struct net_device *conduit, ++ bool operational) ++{ ++ struct dsa_port *cpu_dp = conduit->dsa_ptr; ++ struct mt7530_priv *priv = ds->priv; ++ int val = 0; ++ u8 mask; ++ ++ /* Set the CPU port to trap frames to for MT7530. Trapped frames will be ++ * forwarded to the numerically smallest CPU port whose conduit ++ * interface is up. ++ */ ++ if (priv->id != ID_MT7530 && priv->id != ID_MT7621) ++ return; ++ ++ mask = BIT(cpu_dp->index); ++ ++ if (operational) ++ priv->active_cpu_ports |= mask; ++ else ++ priv->active_cpu_ports &= ~mask; ++ ++ if (priv->active_cpu_ports) ++ val = CPU_EN | CPU_PORT(__ffs(priv->active_cpu_ports)); ++ ++ mt7530_rmw(priv, MT7530_MFC, CPU_EN | CPU_PORT_MASK, val); ++} ++ + static int mt7988_pad_setup(struct dsa_switch *ds, phy_interface_t interface) + { + return 0; +@@ -3183,6 +3209,7 @@ const struct dsa_switch_ops mt7530_switc + .phylink_mac_link_up = mt753x_phylink_mac_link_up, + .get_mac_eee = mt753x_get_mac_eee, + .set_mac_eee = mt753x_set_mac_eee, ++ .master_state_change = mt753x_conduit_state_change, + }; + EXPORT_SYMBOL_GPL(mt7530_switch_ops); + +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -41,8 +41,8 @@ enum mt753x_id { + #define UNU_FFP(x) (((x) & 0xff) << 8) + #define UNU_FFP_MASK UNU_FFP(~0) + #define CPU_EN BIT(7) +-#define CPU_PORT(x) ((x) << 4) +-#define CPU_MASK (0xf << 4) ++#define CPU_PORT_MASK GENMASK(6, 4) ++#define CPU_PORT(x) FIELD_PREP(CPU_PORT_MASK, x) + #define MIRROR_EN BIT(3) + #define MIRROR_PORT(x) ((x) & 0x7) + #define MIRROR_MASK 0x7 +@@ -780,6 +780,7 @@ struct mt753x_info { + * @irq_domain: IRQ domain of the switch irq_chip + * @irq_enable: IRQ enable bits, synced to SYS_INT_EN + * @create_sgmii: Pointer to function creating SGMII PCS instance(s) ++ * @active_cpu_ports: Holding the active CPU ports + */ + struct mt7530_priv { + struct device *dev; +@@ -806,6 +807,7 @@ struct mt7530_priv { + struct irq_domain *irq_domain; + u32 irq_enable; + int (*create_sgmii)(struct mt7530_priv *priv, bool dual_sgmii); ++ u8 active_cpu_ports; + }; + + struct mt7530_hw_vlan_entry { diff --git a/target/linux/generic/backport-6.6/790-06-v6.9-net-dsa-mt7530-use-p5_interface_select-as-data-type-.patch b/target/linux/generic/backport-6.6/790-06-v6.9-net-dsa-mt7530-use-p5_interface_select-as-data-type-.patch new file mode 100644 index 0000000000..5e6f8c22ff --- /dev/null +++ b/target/linux/generic/backport-6.6/790-06-v6.9-net-dsa-mt7530-use-p5_interface_select-as-data-type-.patch @@ -0,0 +1,45 @@ +From 07f411e26f82d75723df1c0c072e5602d06f4e30 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:35:53 +0300 +Subject: [PATCH 06/30] net: dsa: mt7530: use p5_interface_select as data type + for p5_intf_sel +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Use the p5_interface_select enumeration as the data type for the +p5_intf_sel field. This ensures p5_intf_sel can only take the values +defined in the p5_interface_select enumeration. + +Remove the explicit assignment of 0 to P5_DISABLED as the first enum item +is automatically assigned 0. + +Signed-off-by: Arınç ÜNAL +Acked-by: Daniel Golle +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-2-042401f2b279@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.h | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -703,7 +703,7 @@ struct mt7530_port { + + /* Port 5 interface select definitions */ + enum p5_interface_select { +- P5_DISABLED = 0, ++ P5_DISABLED, + P5_INTF_SEL_PHY_P0, + P5_INTF_SEL_PHY_P4, + P5_INTF_SEL_GMAC5, +@@ -796,7 +796,7 @@ struct mt7530_priv { + bool mcm; + phy_interface_t p6_interface; + phy_interface_t p5_interface; +- unsigned int p5_intf_sel; ++ enum p5_interface_select p5_intf_sel; + u8 mirror_rx; + u8 mirror_tx; + struct mt7530_port ports[MT7530_NUM_PORTS]; diff --git a/target/linux/generic/backport-6.6/790-07-v6.9-net-dsa-mt7530-store-port-5-SGMII-capability-of-MT75.patch b/target/linux/generic/backport-6.6/790-07-v6.9-net-dsa-mt7530-store-port-5-SGMII-capability-of-MT75.patch new file mode 100644 index 0000000000..5bbdc6d0e0 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-07-v6.9-net-dsa-mt7530-store-port-5-SGMII-capability-of-MT75.patch @@ -0,0 +1,227 @@ +From 8f7db12efc189eedd196ed8d053236ce27add484 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:35:54 +0300 +Subject: [PATCH 07/30] net: dsa: mt7530: store port 5 SGMII capability of + MT7531 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Introduce the p5_sgmii field to store the information for whether port 5 +has got SGMII or not. Instead of reading the MT7531_TOP_SIG_SR register +multiple times, the register will be read once and the value will be +stored on the p5_sgmii field. This saves unnecessary reads of the +register. + +Move the comment about MT7531AE and MT7531BE to mt7531_setup(), where the +switch is identified. + +Get rid of mt7531_dual_sgmii_supported() now that priv->p5_sgmii stores the +information. Address the code where mt7531_dual_sgmii_supported() is used. + +Get rid of mt7531_is_rgmii_port() which just prints the opposite of +priv->p5_sgmii. + +Instead of calling mt7531_pll_setup() then returning, do not call it if +port 5 is SGMII. + +Remove P5_INTF_SEL_GMAC5_SGMII. The p5_interface_select enum is supposed to +represent the mode that port 5 is being used in, not the hardware +information of port 5. Set p5_intf_sel to P5_INTF_SEL_GMAC5 instead, if +port 5 is not dsa_is_unused_port(). + +Signed-off-by: Arınç ÜNAL +Acked-by: Daniel Golle +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-3-042401f2b279@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530-mdio.c | 7 ++--- + drivers/net/dsa/mt7530.c | 48 ++++++++++++----------------------- + drivers/net/dsa/mt7530.h | 6 +++-- + 3 files changed, 22 insertions(+), 39 deletions(-) + +--- a/drivers/net/dsa/mt7530-mdio.c ++++ b/drivers/net/dsa/mt7530-mdio.c +@@ -81,17 +81,14 @@ static const struct regmap_bus mt7530_re + }; + + static int +-mt7531_create_sgmii(struct mt7530_priv *priv, bool dual_sgmii) ++mt7531_create_sgmii(struct mt7530_priv *priv) + { + struct regmap_config *mt7531_pcs_config[2] = {}; + struct phylink_pcs *pcs; + struct regmap *regmap; + int i, ret = 0; + +- /* MT7531AE has two SGMII units for port 5 and port 6 +- * MT7531BE has only one SGMII unit for port 6 +- */ +- for (i = dual_sgmii ? 0 : 1; i < 2; i++) { ++ for (i = priv->p5_sgmii ? 0 : 1; i < 2; i++) { + mt7531_pcs_config[i] = devm_kzalloc(priv->dev, + sizeof(struct regmap_config), + GFP_KERNEL); +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -487,15 +487,6 @@ mt7530_pad_clk_setup(struct dsa_switch * + return 0; + } + +-static bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv) +-{ +- u32 val; +- +- val = mt7530_read(priv, MT7531_TOP_SIG_SR); +- +- return (val & PAD_DUAL_SGMII_EN) != 0; +-} +- + static int + mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface) + { +@@ -510,9 +501,6 @@ mt7531_pll_setup(struct mt7530_priv *pri + u32 xtal; + u32 val; + +- if (mt7531_dual_sgmii_supported(priv)) +- return; +- + val = mt7530_read(priv, MT7531_CREV); + top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR); + hwstrap = mt7530_read(priv, MT7531_HWTRAP); +@@ -920,8 +908,6 @@ static const char *p5_intf_modes(unsigne + return "PHY P4"; + case P5_INTF_SEL_GMAC5: + return "GMAC5"; +- case P5_INTF_SEL_GMAC5_SGMII: +- return "GMAC5_SGMII"; + default: + return "unknown"; + } +@@ -2524,6 +2510,12 @@ mt7531_setup(struct dsa_switch *ds) + return -ENODEV; + } + ++ /* MT7531AE has got two SGMII units. One for port 5, one for port 6. ++ * MT7531BE has got only one SGMII unit which is for port 6. ++ */ ++ val = mt7530_read(priv, MT7531_TOP_SIG_SR); ++ priv->p5_sgmii = !!(val & PAD_DUAL_SGMII_EN); ++ + /* all MACs must be forced link-down before sw reset */ + for (i = 0; i < MT7530_NUM_PORTS; i++) + mt7530_write(priv, MT7530_PMCR_P(i), MT7531_FORCE_LNK); +@@ -2533,21 +2525,18 @@ mt7531_setup(struct dsa_switch *ds) + SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | + SYS_CTRL_REG_RST); + +- mt7531_pll_setup(priv); +- +- if (mt7531_dual_sgmii_supported(priv)) { +- priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII; +- ++ if (!priv->p5_sgmii) { ++ mt7531_pll_setup(priv); ++ } else { + /* Let ds->slave_mii_bus be able to access external phy. */ + mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK, + MT7531_EXT_P_MDC_11); + mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK, + MT7531_EXT_P_MDIO_12); +- } else { +- priv->p5_intf_sel = P5_INTF_SEL_GMAC5; + } +- dev_dbg(ds->dev, "P5 support %s interface\n", +- p5_intf_modes(priv->p5_intf_sel)); ++ ++ if (!dsa_is_unused_port(ds, 5)) ++ priv->p5_intf_sel = P5_INTF_SEL_GMAC5; + + mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK, + MT7531_GPIO0_INTERRUPT); +@@ -2607,11 +2596,6 @@ static void mt7530_mac_port_get_caps(str + } + } + +-static bool mt7531_is_rgmii_port(struct mt7530_priv *priv, u32 port) +-{ +- return (port == 5) && (priv->p5_intf_sel != P5_INTF_SEL_GMAC5_SGMII); +-} +- + static void mt7531_mac_port_get_caps(struct dsa_switch *ds, int port, + struct phylink_config *config) + { +@@ -2624,7 +2608,7 @@ static void mt7531_mac_port_get_caps(str + break; + + case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */ +- if (mt7531_is_rgmii_port(priv, port)) { ++ if (!priv->p5_sgmii) { + phy_interface_set_rgmii(config->supported_interfaces); + break; + } +@@ -2691,7 +2675,7 @@ static int mt7531_rgmii_setup(struct mt7 + { + u32 val; + +- if (!mt7531_is_rgmii_port(priv, port)) { ++ if (priv->p5_sgmii) { + dev_err(priv->dev, "RGMII mode is not available for port %d\n", + port); + return -EINVAL; +@@ -2934,7 +2918,7 @@ mt7531_cpu_port_config(struct dsa_switch + + switch (port) { + case 5: +- if (mt7531_is_rgmii_port(priv, port)) ++ if (!priv->p5_sgmii) + interface = PHY_INTERFACE_MODE_RGMII; + else + interface = PHY_INTERFACE_MODE_2500BASEX; +@@ -3086,7 +3070,7 @@ mt753x_setup(struct dsa_switch *ds) + mt7530_free_irq_common(priv); + + if (priv->create_sgmii) { +- ret = priv->create_sgmii(priv, mt7531_dual_sgmii_supported(priv)); ++ ret = priv->create_sgmii(priv); + if (ret && priv->irq) + mt7530_free_irq(priv); + } +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -707,7 +707,6 @@ enum p5_interface_select { + P5_INTF_SEL_PHY_P0, + P5_INTF_SEL_PHY_P4, + P5_INTF_SEL_GMAC5, +- P5_INTF_SEL_GMAC5_SGMII, + }; + + struct mt7530_priv; +@@ -776,6 +775,8 @@ struct mt753x_info { + * registers + * @p6_interface Holding the current port 6 interface + * @p5_intf_sel: Holding the current port 5 interface select ++ * @p5_sgmii: Flag for distinguishing if port 5 of the MT7531 switch ++ * has got SGMII + * @irq: IRQ number of the switch + * @irq_domain: IRQ domain of the switch irq_chip + * @irq_enable: IRQ enable bits, synced to SYS_INT_EN +@@ -797,6 +798,7 @@ struct mt7530_priv { + phy_interface_t p6_interface; + phy_interface_t p5_interface; + enum p5_interface_select p5_intf_sel; ++ bool p5_sgmii; + u8 mirror_rx; + u8 mirror_tx; + struct mt7530_port ports[MT7530_NUM_PORTS]; +@@ -806,7 +808,7 @@ struct mt7530_priv { + int irq; + struct irq_domain *irq_domain; + u32 irq_enable; +- int (*create_sgmii)(struct mt7530_priv *priv, bool dual_sgmii); ++ int (*create_sgmii)(struct mt7530_priv *priv); + u8 active_cpu_ports; + }; + diff --git a/target/linux/generic/backport-6.6/790-08-v6.9-net-dsa-mt7530-improve-comments-regarding-switch-por.patch b/target/linux/generic/backport-6.6/790-08-v6.9-net-dsa-mt7530-improve-comments-regarding-switch-por.patch new file mode 100644 index 0000000000..c23074a030 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-08-v6.9-net-dsa-mt7530-improve-comments-regarding-switch-por.patch @@ -0,0 +1,133 @@ +From c91b7fb8fbb2e18ebb497e67f4252cec78e3a29b Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:35:55 +0300 +Subject: [PATCH 08/30] net: dsa: mt7530: improve comments regarding switch + ports +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +There's no logic to numerically order the CPU ports. Just state the port +number instead. + +Remove the irrelevant PHY muxing information from +mt7530_mac_port_get_caps(). Explain the supported MII modes instead. + +Remove the out of place PHY muxing information from +mt753x_phylink_mac_config(). The function is for MT7530, MT7531, and the +switch on the MT7988 SoC but there's no PHY muxing on MT7531 or the switch +on the MT7988 SoC. + +These comments were gradually introduced with the commits below. +commit ca366d6c889b ("net: dsa: mt7530: Convert to PHYLINK API") +commit 38f790a80560 ("net: dsa: mt7530: Add support for port 5") +commit 88bdef8be9f6 ("net: dsa: mt7530: Extend device data ready for adding +a new hardware") +commit c288575f7810 ("net: dsa: mt7530: Add the support of MT7531 switch") + +Signed-off-by: Arınç ÜNAL +Acked-by: Daniel Golle +Reviewed-by: Andrew Lunn +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-4-042401f2b279@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 30 ++++++++++++++++++++---------- + 1 file changed, 20 insertions(+), 10 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2574,12 +2574,14 @@ static void mt7530_mac_port_get_caps(str + struct phylink_config *config) + { + switch (port) { +- case 0 ... 4: /* Internal phy */ ++ /* Ports which are connected to switch PHYs. There is no MII pinout. */ ++ case 0 ... 4: + __set_bit(PHY_INTERFACE_MODE_GMII, + config->supported_interfaces); + break; + +- case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */ ++ /* Port 5 supports rgmii with delays, mii, and gmii. */ ++ case 5: + phy_interface_set_rgmii(config->supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_MII, + config->supported_interfaces); +@@ -2587,7 +2589,8 @@ static void mt7530_mac_port_get_caps(str + config->supported_interfaces); + break; + +- case 6: /* 1st cpu port */ ++ /* Port 6 supports rgmii and trgmii. */ ++ case 6: + __set_bit(PHY_INTERFACE_MODE_RGMII, + config->supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_TRGMII, +@@ -2602,19 +2605,24 @@ static void mt7531_mac_port_get_caps(str + struct mt7530_priv *priv = ds->priv; + + switch (port) { +- case 0 ... 4: /* Internal phy */ ++ /* Ports which are connected to switch PHYs. There is no MII pinout. */ ++ case 0 ... 4: + __set_bit(PHY_INTERFACE_MODE_GMII, + config->supported_interfaces); + break; + +- case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */ ++ /* Port 5 supports rgmii with delays on MT7531BE, sgmii/802.3z on ++ * MT7531AE. ++ */ ++ case 5: + if (!priv->p5_sgmii) { + phy_interface_set_rgmii(config->supported_interfaces); + break; + } + fallthrough; + +- case 6: /* 1st cpu port supports sgmii/8023z only */ ++ /* Port 6 supports sgmii/802.3z. */ ++ case 6: + __set_bit(PHY_INTERFACE_MODE_SGMII, + config->supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_1000BASEX, +@@ -2633,11 +2641,13 @@ static void mt7988_mac_port_get_caps(str + phy_interface_zero(config->supported_interfaces); + + switch (port) { +- case 0 ... 4: /* Internal phy */ ++ /* Ports which are connected to switch PHYs. There is no MII pinout. */ ++ case 0 ... 4: + __set_bit(PHY_INTERFACE_MODE_INTERNAL, + config->supported_interfaces); + break; + ++ /* Port 6 is connected to SoC's XGMII MAC. There is no MII pinout. */ + case 6: + __set_bit(PHY_INTERFACE_MODE_INTERNAL, + config->supported_interfaces); +@@ -2801,12 +2811,12 @@ mt753x_phylink_mac_config(struct dsa_swi + u32 mcr_cur, mcr_new; + + switch (port) { +- case 0 ... 4: /* Internal phy */ ++ case 0 ... 4: + if (state->interface != PHY_INTERFACE_MODE_GMII && + state->interface != PHY_INTERFACE_MODE_INTERNAL) + goto unsupported; + break; +- case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */ ++ case 5: + if (priv->p5_interface == state->interface) + break; + +@@ -2816,7 +2826,7 @@ mt753x_phylink_mac_config(struct dsa_swi + if (priv->p5_intf_sel != P5_DISABLED) + priv->p5_interface = state->interface; + break; +- case 6: /* 1st cpu port */ ++ case 6: + if (priv->p6_interface == state->interface) + break; + diff --git a/target/linux/generic/backport-6.6/790-09-v6.9-net-dsa-mt7530-improve-code-path-for-setting-up-port.patch b/target/linux/generic/backport-6.6/790-09-v6.9-net-dsa-mt7530-improve-code-path-for-setting-up-port.patch new file mode 100644 index 0000000000..a0f565906b --- /dev/null +++ b/target/linux/generic/backport-6.6/790-09-v6.9-net-dsa-mt7530-improve-code-path-for-setting-up-port.patch @@ -0,0 +1,95 @@ +From c1b2294a9b4b9b6c0cbe58666cb86e0a9cb0abfd Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:35:56 +0300 +Subject: [PATCH 09/30] net: dsa: mt7530: improve code path for setting up port + 5 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +There're two code paths for setting up port 5: + +mt7530_setup() +-> mt7530_setup_port5() + +mt753x_phylink_mac_config() +-> mt753x_mac_config() + -> mt7530_mac_config() + -> mt7530_setup_port5() + +Currently mt7530_setup_port5() from mt7530_setup() always runs. If port 5 +is used as a CPU, DSA, or user port, mt7530_setup_port5() from +mt753x_phylink_mac_config() won't run. That is because priv->p5_interface +set on mt7530_setup_port5() will match state->interface on +mt753x_phylink_mac_config() which will stop running mt7530_setup_port5() +again. + +Therefore, mt7530_setup_port5() will never run from +mt753x_phylink_mac_config(). + +Address this by not running mt7530_setup_port5() from mt7530_setup() if +port 5 is used as a CPU, DSA, or user port. This driver isn't in the +dsa_switches_apply_workarounds[] array so phylink will always be present. + +To keep the cases where port 5 isn't controlled by phylink working as +before, preserve the mt7530_setup_port5() call from mt7530_setup(). + +Do not set priv->p5_intf_sel to P5_DISABLED. It is already set to that when +"priv" is allocated. + +Move setting the interface to a more specific location. It's supposed to be +overwritten if PHY muxing is detected. + +Improve the comment which explains the process. + +Signed-off-by: Arınç ÜNAL +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-5-042401f2b279@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 17 ++++++++--------- + 1 file changed, 8 insertions(+), 9 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2362,16 +2362,15 @@ mt7530_setup(struct dsa_switch *ds) + return ret; + + /* Setup port 5 */ +- priv->p5_intf_sel = P5_DISABLED; +- interface = PHY_INTERFACE_MODE_NA; +- + if (!dsa_is_unused_port(ds, 5)) { + priv->p5_intf_sel = P5_INTF_SEL_GMAC5; +- ret = of_get_phy_mode(dsa_to_port(ds, 5)->dn, &interface); +- if (ret && ret != -ENODEV) +- return ret; + } else { +- /* Scan the ethernet nodes. look for GMAC1, lookup used phy */ ++ /* Scan the ethernet nodes. Look for GMAC1, lookup the used PHY. ++ * Set priv->p5_intf_sel to the appropriate value if PHY muxing ++ * is detected. ++ */ ++ interface = PHY_INTERFACE_MODE_NA; ++ + for_each_child_of_node(dn, mac_np) { + if (!of_device_is_compatible(mac_np, + "mediatek,eth-mac")) +@@ -2402,6 +2401,8 @@ mt7530_setup(struct dsa_switch *ds) + of_node_put(phy_node); + break; + } ++ ++ mt7530_setup_port5(ds, interface); + } + + #ifdef CONFIG_GPIOLIB +@@ -2412,8 +2413,6 @@ mt7530_setup(struct dsa_switch *ds) + } + #endif /* CONFIG_GPIOLIB */ + +- mt7530_setup_port5(ds, interface); +- + /* Flush the FDB table */ + ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL); + if (ret < 0) diff --git a/target/linux/generic/backport-6.6/790-10-v6.9-net-dsa-mt7530-do-not-set-priv-p5_interface-on-mt753.patch b/target/linux/generic/backport-6.6/790-10-v6.9-net-dsa-mt7530-do-not-set-priv-p5_interface-on-mt753.patch new file mode 100644 index 0000000000..0b021f07c6 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-10-v6.9-net-dsa-mt7530-do-not-set-priv-p5_interface-on-mt753.patch @@ -0,0 +1,42 @@ +From cd1cee68e57eedb460a68d1f42abf9f740b17e94 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:35:57 +0300 +Subject: [PATCH 10/30] net: dsa: mt7530: do not set priv->p5_interface on + mt7530_setup_port5() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Running mt7530_setup_port5() from mt7530_setup() used to handle all cases +of configuring port 5, including phylink. + +Setting priv->p5_interface under mt7530_setup_port5() makes sure that +mt7530_setup_port5() from mt753x_phylink_mac_config() won't run. + +The commit ("net: dsa: mt7530: improve code path for setting up port 5") +makes so that mt7530_setup_port5() from mt7530_setup() runs only on +non-phylink cases. + +Get rid of unnecessarily setting priv->p5_interface under +mt7530_setup_port5() as port 5 phylink configuration will be done by +running mt7530_setup_port5() from mt753x_phylink_mac_config() now. + +Signed-off-by: Arınç ÜNAL +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-6-042401f2b279@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 2 -- + 1 file changed, 2 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -978,8 +978,6 @@ static void mt7530_setup_port5(struct ds + dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n", + val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface)); + +- priv->p5_interface = interface; +- + unlock_exit: + mutex_unlock(&priv->reg_mutex); + } diff --git a/target/linux/generic/backport-6.6/790-11-v6.9-net-dsa-mt7530-do-not-run-mt7530_setup_port5-if-port.patch b/target/linux/generic/backport-6.6/790-11-v6.9-net-dsa-mt7530-do-not-run-mt7530_setup_port5-if-port.patch new file mode 100644 index 0000000000..9eecede95e --- /dev/null +++ b/target/linux/generic/backport-6.6/790-11-v6.9-net-dsa-mt7530-do-not-run-mt7530_setup_port5-if-port.patch @@ -0,0 +1,62 @@ +From e55a68aeb0f8b9c74b582b7a5e92b82988832bf8 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Mon, 22 Jan 2024 08:35:58 +0300 +Subject: [PATCH 11/30] net: dsa: mt7530: do not run mt7530_setup_port5() if + port 5 is disabled +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +There's no need to run all the code on mt7530_setup_port5() if port 5 is +disabled. The only case for calling mt7530_setup_port5() from +mt7530_setup() is when PHY muxing is enabled. That is because port 5 is not +defined as a port on the devicetree, therefore, it cannot be controlled by +phylink. + +Because of this, run mt7530_setup_port5() if priv->p5_intf_sel is +P5_INTF_SEL_PHY_P0 or P5_INTF_SEL_PHY_P4. Remove the P5_DISABLED case from +mt7530_setup_port5(). + +Stop initialising the interface variable as the remaining cases will always +call mt7530_setup_port5() with it initialised. + +Signed-off-by: Arınç ÜNAL +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-7-042401f2b279@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 9 +++------ + 1 file changed, 3 insertions(+), 6 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -942,9 +942,6 @@ static void mt7530_setup_port5(struct ds + /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */ + val &= ~MHWTRAP_P5_DIS; + break; +- case P5_DISABLED: +- interface = PHY_INTERFACE_MODE_NA; +- break; + default: + dev_err(ds->dev, "Unsupported p5_intf_sel %d\n", + priv->p5_intf_sel); +@@ -2367,8 +2364,6 @@ mt7530_setup(struct dsa_switch *ds) + * Set priv->p5_intf_sel to the appropriate value if PHY muxing + * is detected. + */ +- interface = PHY_INTERFACE_MODE_NA; +- + for_each_child_of_node(dn, mac_np) { + if (!of_device_is_compatible(mac_np, + "mediatek,eth-mac")) +@@ -2400,7 +2395,9 @@ mt7530_setup(struct dsa_switch *ds) + break; + } + +- mt7530_setup_port5(ds, interface); ++ if (priv->p5_intf_sel == P5_INTF_SEL_PHY_P0 || ++ priv->p5_intf_sel == P5_INTF_SEL_PHY_P4) ++ mt7530_setup_port5(ds, interface); + } + + #ifdef CONFIG_GPIOLIB diff --git a/target/linux/generic/backport-6.6/790-12-v6.9-net-dsa-mt7530-empty-default-case-on-mt7530_setup_po.patch b/target/linux/generic/backport-6.6/790-12-v6.9-net-dsa-mt7530-empty-default-case-on-mt7530_setup_po.patch new file mode 100644 index 0000000000..c9a57e36a3 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-12-v6.9-net-dsa-mt7530-empty-default-case-on-mt7530_setup_po.patch @@ -0,0 +1,58 @@ +From 1f538cda24bcb69919da2fcac0211b66281d3d4e Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Tue, 6 Feb 2024 01:08:02 +0300 +Subject: [PATCH 12/30] net: dsa: mt7530: empty default case on + mt7530_setup_port5() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +There're two code paths for setting up port 5: + +mt7530_setup() +-> mt7530_setup_port5() + +mt753x_phylink_mac_config() +-> mt753x_mac_config() + -> mt7530_mac_config() + -> mt7530_setup_port5() + +On the first code path, priv->p5_intf_sel is either set to +P5_INTF_SEL_PHY_P0 or P5_INTF_SEL_PHY_P4 when mt7530_setup_port5() is run. + +On the second code path, priv->p5_intf_sel is set to P5_INTF_SEL_GMAC5 when +mt7530_setup_port5() is run. + +Empty the default case which will never run but is needed nonetheless to +handle all the remaining enumeration values. + +Reviewed-by: Vladimir Oltean +Reviewed-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-1-d7d92a185cb1@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 5 +---- + 1 file changed, 1 insertion(+), 4 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -943,9 +943,7 @@ static void mt7530_setup_port5(struct ds + val &= ~MHWTRAP_P5_DIS; + break; + default: +- dev_err(ds->dev, "Unsupported p5_intf_sel %d\n", +- priv->p5_intf_sel); +- goto unlock_exit; ++ break; + } + + /* Setup RGMII settings */ +@@ -975,7 +973,6 @@ static void mt7530_setup_port5(struct ds + dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n", + val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface)); + +-unlock_exit: + mutex_unlock(&priv->reg_mutex); + } + diff --git a/target/linux/generic/backport-6.6/790-13-v6.9-net-dsa-mt7530-move-XTAL-check-to-mt7530_setup.patch b/target/linux/generic/backport-6.6/790-13-v6.9-net-dsa-mt7530-move-XTAL-check-to-mt7530_setup.patch new file mode 100644 index 0000000000..575352dbb1 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-13-v6.9-net-dsa-mt7530-move-XTAL-check-to-mt7530_setup.patch @@ -0,0 +1,53 @@ +From 12c511cd31c2dc6bd96e4a89f7709d515aa8a76b Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Tue, 6 Feb 2024 01:08:03 +0300 +Subject: [PATCH 13/30] net: dsa: mt7530: move XTAL check to mt7530_setup() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The crystal frequency concerns the switch core. The frequency should be +checked when the switch is being set up so the driver can reject the +unsupported hardware earlier and without requiring port 6 to be used. + +Move it to mt7530_setup(). Drop the unnecessary function printing. + +Reviewed-by: Andrew Lunn +Reviewed-by: Vladimir Oltean +Reviewed-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-2-d7d92a185cb1@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 13 ++++++------- + 1 file changed, 6 insertions(+), 7 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -422,13 +422,6 @@ mt7530_pad_clk_setup(struct dsa_switch * + + xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK; + +- if (xtal == HWTRAP_XTAL_20MHZ) { +- dev_err(priv->dev, +- "%s: MT7530 with a 20MHz XTAL is not supported!\n", +- __func__); +- return -EINVAL; +- } +- + switch (interface) { + case PHY_INTERFACE_MODE_RGMII: + trgint = 0; +@@ -2295,6 +2288,12 @@ mt7530_setup(struct dsa_switch *ds) + return -ENODEV; + } + ++ if ((val & HWTRAP_XTAL_MASK) == HWTRAP_XTAL_20MHZ) { ++ dev_err(priv->dev, ++ "MT7530 with a 20MHz XTAL is not supported!\n"); ++ return -EINVAL; ++ } ++ + /* Reset the switch through internal reset */ + mt7530_write(priv, MT7530_SYS_CTRL, + SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | diff --git a/target/linux/generic/backport-6.6/790-14-v6.9-net-dsa-mt7530-simplify-mt7530_pad_clk_setup.patch b/target/linux/generic/backport-6.6/790-14-v6.9-net-dsa-mt7530-simplify-mt7530_pad_clk_setup.patch new file mode 100644 index 0000000000..75c90b9ad5 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-14-v6.9-net-dsa-mt7530-simplify-mt7530_pad_clk_setup.patch @@ -0,0 +1,146 @@ +From c33899a6a8c1a5723afbfc075600aba2e2bdbea7 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Tue, 6 Feb 2024 01:08:04 +0300 +Subject: [PATCH 14/30] net: dsa: mt7530: simplify mt7530_pad_clk_setup() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This code is from before this driver was converted to phylink API. Phylink +deals with the unsupported interface cases before mt7530_pad_clk_setup() is +run. Therefore, the default case would never run. However, it must be +defined nonetheless to handle all the remaining enumeration values, the +phy-modes. + +Switch to if statement for RGMII and return which simplifies the code and +saves an indent. + +Set P6_INTF_MODE, which is the three least significant bits of the +MT7530_P6ECR register, to 0 for RGMII even though it will already be 0 +after reset. This is to keep supporting dynamic reconfiguration of the port +in the case the interface changes from TRGMII to RGMII. + +Disable the TRGMII clocks for all cases. They will be enabled if TRGMII is +being used. + +Read XTAL after checking for RGMII as it's only needed for the TRGMII +interface mode. + +Reviewed-by: Daniel Golle +Reviewed-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Reviewed-by: Vladimir Oltean +Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-3-d7d92a185cb1@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 91 ++++++++++++++++++---------------------- + 1 file changed, 40 insertions(+), 51 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -418,65 +418,54 @@ static int + mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface) + { + struct mt7530_priv *priv = ds->priv; +- u32 ncpo1, ssc_delta, trgint, xtal; ++ u32 ncpo1, ssc_delta, xtal; + +- xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK; ++ /* Disable the MT7530 TRGMII clocks */ ++ core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN); + +- switch (interface) { +- case PHY_INTERFACE_MODE_RGMII: +- trgint = 0; +- break; +- case PHY_INTERFACE_MODE_TRGMII: +- trgint = 1; +- if (xtal == HWTRAP_XTAL_25MHZ) +- ssc_delta = 0x57; +- else +- ssc_delta = 0x87; +- if (priv->id == ID_MT7621) { +- /* PLL frequency: 125MHz: 1.0GBit */ +- if (xtal == HWTRAP_XTAL_40MHZ) +- ncpo1 = 0x0640; +- if (xtal == HWTRAP_XTAL_25MHZ) +- ncpo1 = 0x0a00; +- } else { /* PLL frequency: 250MHz: 2.0Gbit */ +- if (xtal == HWTRAP_XTAL_40MHZ) +- ncpo1 = 0x0c80; +- if (xtal == HWTRAP_XTAL_25MHZ) +- ncpo1 = 0x1400; +- } +- break; +- default: +- dev_err(priv->dev, "xMII interface %d not supported\n", +- interface); +- return -EINVAL; ++ if (interface == PHY_INTERFACE_MODE_RGMII) { ++ mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, ++ P6_INTF_MODE(0)); ++ return 0; + } + +- mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, +- P6_INTF_MODE(trgint)); ++ mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, P6_INTF_MODE(1)); + +- if (trgint) { +- /* Disable the MT7530 TRGMII clocks */ +- core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN); +- +- /* Setup the MT7530 TRGMII Tx Clock */ +- core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1)); +- core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0)); +- core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta)); +- core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta)); +- core_write(priv, CORE_PLL_GROUP4, +- RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN | +- RG_SYSPLL_BIAS_LPF_EN); +- core_write(priv, CORE_PLL_GROUP2, +- RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN | +- RG_SYSPLL_POSDIV(1)); +- core_write(priv, CORE_PLL_GROUP7, +- RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) | +- RG_LCDDS_PWDB | RG_LCDDS_ISO_EN); ++ xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK; + +- /* Enable the MT7530 TRGMII clocks */ +- core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN); ++ if (xtal == HWTRAP_XTAL_25MHZ) ++ ssc_delta = 0x57; ++ else ++ ssc_delta = 0x87; ++ ++ if (priv->id == ID_MT7621) { ++ /* PLL frequency: 125MHz: 1.0GBit */ ++ if (xtal == HWTRAP_XTAL_40MHZ) ++ ncpo1 = 0x0640; ++ if (xtal == HWTRAP_XTAL_25MHZ) ++ ncpo1 = 0x0a00; ++ } else { /* PLL frequency: 250MHz: 2.0Gbit */ ++ if (xtal == HWTRAP_XTAL_40MHZ) ++ ncpo1 = 0x0c80; ++ if (xtal == HWTRAP_XTAL_25MHZ) ++ ncpo1 = 0x1400; + } + ++ /* Setup the MT7530 TRGMII Tx Clock */ ++ core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1)); ++ core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0)); ++ core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta)); ++ core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta)); ++ core_write(priv, CORE_PLL_GROUP4, RG_SYSPLL_DDSFBK_EN | ++ RG_SYSPLL_BIAS_EN | RG_SYSPLL_BIAS_LPF_EN); ++ core_write(priv, CORE_PLL_GROUP2, RG_SYSPLL_EN_NORMAL | ++ RG_SYSPLL_VODEN | RG_SYSPLL_POSDIV(1)); ++ core_write(priv, CORE_PLL_GROUP7, RG_LCDDS_PCW_NCPO_CHG | ++ RG_LCCDS_C(3) | RG_LCDDS_PWDB | RG_LCDDS_ISO_EN); ++ ++ /* Enable the MT7530 TRGMII clocks */ ++ core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN); ++ + return 0; + } + diff --git a/target/linux/generic/backport-6.6/790-15-v6.9-net-dsa-mt7530-call-port-6-setup-from-mt7530_mac_con.patch b/target/linux/generic/backport-6.6/790-15-v6.9-net-dsa-mt7530-call-port-6-setup-from-mt7530_mac_con.patch new file mode 100644 index 0000000000..dd886adaa2 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-15-v6.9-net-dsa-mt7530-call-port-6-setup-from-mt7530_mac_con.patch @@ -0,0 +1,97 @@ +From e612922de7070a28802216650ee88128a57290de Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Tue, 6 Feb 2024 01:08:05 +0300 +Subject: [PATCH 15/30] net: dsa: mt7530: call port 6 setup from + mt7530_mac_config() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +mt7530_pad_clk_setup() is called if port 6 is enabled. It used to do more +things than setting up port 6. That part was moved to more appropriate +locations, mt7530_setup() and mt7530_pll_setup(). + +Now that all it does is set up port 6, rename it to mt7530_setup_port6(), +and move it to a more appropriate location, under mt7530_mac_config(). + +Change mt7530_setup_port6() to void as there're no error cases. + +Leave an empty mt7530_pad_clk_setup() to satisfy the pad_setup function +pointer. + +This is the code path for setting up the ports before: + +dsa_switch_ops :: phylink_mac_config() -> mt753x_phylink_mac_config() +-> mt753x_mac_config() + -> mt753x_info :: mac_port_config() -> mt7530_mac_config() + -> mt7530_setup_port5() +-> mt753x_pad_setup() + -> mt753x_info :: pad_setup() -> mt7530_pad_clk_setup() + +This is after: + +dsa_switch_ops :: phylink_mac_config() -> mt753x_phylink_mac_config() +-> mt753x_mac_config() + -> mt753x_info :: mac_port_config() -> mt7530_mac_config() + -> mt7530_setup_port5() + -> mt7530_setup_port6() + +Reviewed-by: Vladimir Oltean +Reviewed-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-4-d7d92a185cb1@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 19 +++++++++++-------- + 1 file changed, 11 insertions(+), 8 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -414,8 +414,8 @@ mt753x_preferred_default_local_cpu_port( + } + + /* Setup port 6 interface mode and TRGMII TX circuit */ +-static int +-mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface) ++static void ++mt7530_setup_port6(struct dsa_switch *ds, phy_interface_t interface) + { + struct mt7530_priv *priv = ds->priv; + u32 ncpo1, ssc_delta, xtal; +@@ -426,7 +426,7 @@ mt7530_pad_clk_setup(struct dsa_switch * + if (interface == PHY_INTERFACE_MODE_RGMII) { + mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, + P6_INTF_MODE(0)); +- return 0; ++ return; + } + + mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, P6_INTF_MODE(1)); +@@ -465,7 +465,11 @@ mt7530_pad_clk_setup(struct dsa_switch * + + /* Enable the MT7530 TRGMII clocks */ + core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN); ++} + ++static int ++mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface) ++{ + return 0; + } + +@@ -2649,11 +2653,10 @@ mt7530_mac_config(struct dsa_switch *ds, + { + struct mt7530_priv *priv = ds->priv; + +- /* Only need to setup port5. */ +- if (port != 5) +- return 0; +- +- mt7530_setup_port5(priv->ds, interface); ++ if (port == 5) ++ mt7530_setup_port5(priv->ds, interface); ++ else if (port == 6) ++ mt7530_setup_port6(priv->ds, interface); + + return 0; + } diff --git a/target/linux/generic/backport-6.6/790-16-v6.9-net-dsa-mt7530-remove-pad_setup-function-pointer.patch b/target/linux/generic/backport-6.6/790-16-v6.9-net-dsa-mt7530-remove-pad_setup-function-pointer.patch new file mode 100644 index 0000000000..efe554b292 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-16-v6.9-net-dsa-mt7530-remove-pad_setup-function-pointer.patch @@ -0,0 +1,148 @@ +From af83e0c7d766078fcd5580c0c81b9e5b55ff5906 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Tue, 6 Feb 2024 01:08:06 +0300 +Subject: [PATCH 16/30] net: dsa: mt7530: remove pad_setup function pointer +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The pad_setup function pointer was introduced with 88bdef8be9f6 ("net: dsa: +mt7530: Extend device data ready for adding a new hardware"). It was being +used to set up the core clock and port 6 of the MT7530 switch, and pll of +the MT7531 switch. + +All of these were moved to more appropriate locations, and it was never +used for the switch on the MT7988 SoC. Therefore, this function pointer +hasn't got a use anymore. Remove it. + +Acked-by: Daniel Golle +Reviewed-by: Vladimir Oltean +Reviewed-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-5-d7d92a185cb1@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 36 ++---------------------------------- + drivers/net/dsa/mt7530.h | 3 --- + 2 files changed, 2 insertions(+), 37 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -467,18 +467,6 @@ mt7530_setup_port6(struct dsa_switch *ds + core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN); + } + +-static int +-mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface) +-{ +- return 0; +-} +- +-static int +-mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface) +-{ +- return 0; +-} +- + static void + mt7531_pll_setup(struct mt7530_priv *priv) + { +@@ -2640,14 +2628,6 @@ static void mt7988_mac_port_get_caps(str + } + + static int +-mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state) +-{ +- struct mt7530_priv *priv = ds->priv; +- +- return priv->info->pad_setup(ds, state->interface); +-} +- +-static int + mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode, + phy_interface_t interface) + { +@@ -2812,8 +2792,6 @@ mt753x_phylink_mac_config(struct dsa_swi + if (priv->p6_interface == state->interface) + break; + +- mt753x_pad_setup(ds, state); +- + if (mt753x_mac_config(ds, port, mode, state) < 0) + goto unsupported; + +@@ -3130,11 +3108,6 @@ mt753x_conduit_state_change(struct dsa_s + mt7530_rmw(priv, MT7530_MFC, CPU_EN | CPU_PORT_MASK, val); + } + +-static int mt7988_pad_setup(struct dsa_switch *ds, phy_interface_t interface) +-{ +- return 0; +-} +- + static int mt7988_setup(struct dsa_switch *ds) + { + struct mt7530_priv *priv = ds->priv; +@@ -3198,7 +3171,6 @@ const struct mt753x_info mt753x_table[] + .phy_write_c22 = mt7530_phy_write_c22, + .phy_read_c45 = mt7530_phy_read_c45, + .phy_write_c45 = mt7530_phy_write_c45, +- .pad_setup = mt7530_pad_clk_setup, + .mac_port_get_caps = mt7530_mac_port_get_caps, + .mac_port_config = mt7530_mac_config, + }, +@@ -3210,7 +3182,6 @@ const struct mt753x_info mt753x_table[] + .phy_write_c22 = mt7530_phy_write_c22, + .phy_read_c45 = mt7530_phy_read_c45, + .phy_write_c45 = mt7530_phy_write_c45, +- .pad_setup = mt7530_pad_clk_setup, + .mac_port_get_caps = mt7530_mac_port_get_caps, + .mac_port_config = mt7530_mac_config, + }, +@@ -3222,7 +3193,6 @@ const struct mt753x_info mt753x_table[] + .phy_write_c22 = mt7531_ind_c22_phy_write, + .phy_read_c45 = mt7531_ind_c45_phy_read, + .phy_write_c45 = mt7531_ind_c45_phy_write, +- .pad_setup = mt7531_pad_setup, + .cpu_port_config = mt7531_cpu_port_config, + .mac_port_get_caps = mt7531_mac_port_get_caps, + .mac_port_config = mt7531_mac_config, +@@ -3235,7 +3205,6 @@ const struct mt753x_info mt753x_table[] + .phy_write_c22 = mt7531_ind_c22_phy_write, + .phy_read_c45 = mt7531_ind_c45_phy_read, + .phy_write_c45 = mt7531_ind_c45_phy_write, +- .pad_setup = mt7988_pad_setup, + .cpu_port_config = mt7988_cpu_port_config, + .mac_port_get_caps = mt7988_mac_port_get_caps, + .mac_port_config = mt7988_mac_config, +@@ -3265,9 +3234,8 @@ mt7530_probe_common(struct mt7530_priv * + /* Sanity check if these required device operations are filled + * properly. + */ +- if (!priv->info->sw_setup || !priv->info->pad_setup || +- !priv->info->phy_read_c22 || !priv->info->phy_write_c22 || +- !priv->info->mac_port_get_caps || ++ if (!priv->info->sw_setup || !priv->info->phy_read_c22 || ++ !priv->info->phy_write_c22 || !priv->info->mac_port_get_caps || + !priv->info->mac_port_config) + return -EINVAL; + +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -724,8 +724,6 @@ struct mt753x_pcs { + * @phy_write_c22: Holding the way writing PHY port using C22 + * @phy_read_c45: Holding the way reading PHY port using C45 + * @phy_write_c45: Holding the way writing PHY port using C45 +- * @pad_setup: Holding the way setting up the bus pad for a certain +- * MAC port + * @phy_mode_supported: Check if the PHY type is being supported on a certain + * port + * @mac_port_validate: Holding the way to set addition validate type for a +@@ -746,7 +744,6 @@ struct mt753x_info { + int regnum); + int (*phy_write_c45)(struct mt7530_priv *priv, int port, int devad, + int regnum, u16 val); +- int (*pad_setup)(struct dsa_switch *ds, phy_interface_t interface); + int (*cpu_port_config)(struct dsa_switch *ds, int port); + void (*mac_port_get_caps)(struct dsa_switch *ds, int port, + struct phylink_config *config); diff --git a/target/linux/generic/backport-6.6/790-17-v6.9-net-dsa-mt7530-correct-port-capabilities-of-MT7988.patch b/target/linux/generic/backport-6.6/790-17-v6.9-net-dsa-mt7530-correct-port-capabilities-of-MT7988.patch new file mode 100644 index 0000000000..b707c3f6e9 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-17-v6.9-net-dsa-mt7530-correct-port-capabilities-of-MT7988.patch @@ -0,0 +1,36 @@ +From 9716e3e2c21547c97a9d79119da8fdce5659c2cc Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Tue, 6 Feb 2024 01:08:07 +0300 +Subject: [PATCH 17/30] net: dsa: mt7530: correct port capabilities of MT7988 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +On the switch on the MT7988 SoC, as shown in Block Diagram 8.1.1.3 on page +125 of "MT7988A Wi-Fi 7 Generation Router Platform: Datasheet (Open +Version) v0.1", there are only 4 PHYs. That's port 0 to 3. Set the case for +ports which connect to switch PHYs to '0 ... 3'. + +Port 4 and 5 are not used at all in this design. + +Link: https://wiki.banana-pi.org/Banana_Pi_BPI-R4#Documents [1] +Acked-by: Daniel Golle +Reviewed-by: Vladimir Oltean +Signed-off-by: Arınç ÜNAL +Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-6-d7d92a185cb1@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2613,7 +2613,7 @@ static void mt7988_mac_port_get_caps(str + + switch (port) { + /* Ports which are connected to switch PHYs. There is no MII pinout. */ +- case 0 ... 4: ++ case 0 ... 3: + __set_bit(PHY_INTERFACE_MODE_INTERNAL, + config->supported_interfaces); + break; diff --git a/target/linux/generic/backport-6.6/790-18-v6.9-net-dsa-mt7530-do-not-clear-config-supported_interfa.patch b/target/linux/generic/backport-6.6/790-18-v6.9-net-dsa-mt7530-do-not-clear-config-supported_interfa.patch new file mode 100644 index 0000000000..4d781836da --- /dev/null +++ b/target/linux/generic/backport-6.6/790-18-v6.9-net-dsa-mt7530-do-not-clear-config-supported_interfa.patch @@ -0,0 +1,38 @@ +From 4d7b17712513710778c0f2f83ea5d9b55ed58c36 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Tue, 6 Feb 2024 01:08:08 +0300 +Subject: [PATCH 18/30] net: dsa: mt7530: do not clear + config->supported_interfaces +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +There's no need to clear the config->supported_interfaces bitmap before +reporting the supported interfaces as all bits in the bitmap will already +be initialized to zero when the phylink_config structure is allocated. The +"config" pointer points to &dp->phylink_config, and "dp" is allocated by +dsa_port_touch() with kzalloc(), so all its fields are filled with zeroes. + +There's no code that would change the bitmap beforehand. Remove it. + +Acked-by: Daniel Golle +Reviewed-by: Vladimir Oltean +Reviewed-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-7-d7d92a185cb1@arinc9.com +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 2 -- + 1 file changed, 2 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2609,8 +2609,6 @@ static void mt7531_mac_port_get_caps(str + static void mt7988_mac_port_get_caps(struct dsa_switch *ds, int port, + struct phylink_config *config) + { +- phy_interface_zero(config->supported_interfaces); +- + switch (port) { + /* Ports which are connected to switch PHYs. There is no MII pinout. */ + case 0 ... 3: diff --git a/target/linux/generic/backport-6.6/790-19-v6.9-net-dsa-mt7530-remove-.mac_port_config-for-MT7988-an.patch b/target/linux/generic/backport-6.6/790-19-v6.9-net-dsa-mt7530-remove-.mac_port_config-for-MT7988-an.patch new file mode 100644 index 0000000000..d05b8ea5b9 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-19-v6.9-net-dsa-mt7530-remove-.mac_port_config-for-MT7988-an.patch @@ -0,0 +1,81 @@ +From 69e689e28191f9a242de6821a85f2c5ae4dbd5ae Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:42:57 +0200 +Subject: [PATCH 19/30] net: dsa: mt7530: remove .mac_port_config for MT7988 + and make it optional +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +For the switch on the MT7988 SoC, the mac_port_config member for ID_MT7988 +in mt753x_table is not needed as the interfaces of all MACs are already +handled on mt7988_mac_port_get_caps(). + +Therefore, remove the mac_port_config member from ID_MT7988 in +mt753x_table. Before calling priv->info->mac_port_config(), if there's no +mac_port_config member in mt753x_table, exit mt753x_mac_config() +successfully. + +Remove calling priv->info->mac_port_config() from the sanity check as the +sanity check requires a pointer to a mac_port_config function to be +non-NULL. This will fail for MT7988 as mac_port_config won't be a member of +its info table. + +Co-developed-by: Daniel Golle +Signed-off-by: Daniel Golle +Signed-off-by: Arınç ÜNAL +Reviewed-by: Vladimir Oltean +Reviewed-by: Russell King (Oracle) +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 18 ++++-------------- + 1 file changed, 4 insertions(+), 14 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2692,17 +2692,6 @@ static bool mt753x_is_mac_port(u32 port) + } + + static int +-mt7988_mac_config(struct dsa_switch *ds, int port, unsigned int mode, +- phy_interface_t interface) +-{ +- if (dsa_is_cpu_port(ds, port) && +- interface == PHY_INTERFACE_MODE_INTERNAL) +- return 0; +- +- return -EINVAL; +-} +- +-static int + mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, + phy_interface_t interface) + { +@@ -2742,6 +2731,9 @@ mt753x_mac_config(struct dsa_switch *ds, + { + struct mt7530_priv *priv = ds->priv; + ++ if (!priv->info->mac_port_config) ++ return 0; ++ + return priv->info->mac_port_config(ds, port, mode, state->interface); + } + +@@ -3205,7 +3197,6 @@ const struct mt753x_info mt753x_table[] + .phy_write_c45 = mt7531_ind_c45_phy_write, + .cpu_port_config = mt7988_cpu_port_config, + .mac_port_get_caps = mt7988_mac_port_get_caps, +- .mac_port_config = mt7988_mac_config, + }, + }; + EXPORT_SYMBOL_GPL(mt753x_table); +@@ -3233,8 +3224,7 @@ mt7530_probe_common(struct mt7530_priv * + * properly. + */ + if (!priv->info->sw_setup || !priv->info->phy_read_c22 || +- !priv->info->phy_write_c22 || !priv->info->mac_port_get_caps || +- !priv->info->mac_port_config) ++ !priv->info->phy_write_c22 || !priv->info->mac_port_get_caps) + return -EINVAL; + + priv->id = priv->info->id; diff --git a/target/linux/generic/backport-6.6/790-20-v6.9-net-dsa-mt7530-set-interrupt-register-only-for-MT753.patch b/target/linux/generic/backport-6.6/790-20-v6.9-net-dsa-mt7530-set-interrupt-register-only-for-MT753.patch new file mode 100644 index 0000000000..143dd0dc1a --- /dev/null +++ b/target/linux/generic/backport-6.6/790-20-v6.9-net-dsa-mt7530-set-interrupt-register-only-for-MT753.patch @@ -0,0 +1,31 @@ +From f8faa3a04ca860b31f22d7d526c5e3f3de511a8f Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:42:58 +0200 +Subject: [PATCH 20/30] net: dsa: mt7530: set interrupt register only for + MT7530 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Setting this register related to interrupts is only needed for the MT7530 +switch. Make an exclusive check to ensure this. + +Signed-off-by: Arınç ÜNAL +Acked-by: Daniel Golle +Tested-by: Daniel Golle +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2091,7 +2091,7 @@ mt7530_setup_irq(struct mt7530_priv *pri + } + + /* This register must be set for MT7530 to properly fire interrupts */ +- if (priv->id != ID_MT7531) ++ if (priv->id == ID_MT7530 || priv->id == ID_MT7621) + mt7530_set(priv, MT7530_TOP_SIG_CTRL, TOP_SIG_CTRL_NORMAL); + + ret = request_threaded_irq(priv->irq, NULL, mt7530_irq_thread_fn, diff --git a/target/linux/generic/backport-6.6/790-21-v6.9-net-dsa-mt7530-do-not-use-SW_PHY_RST-to-reset-MT7531.patch b/target/linux/generic/backport-6.6/790-21-v6.9-net-dsa-mt7530-do-not-use-SW_PHY_RST-to-reset-MT7531.patch new file mode 100644 index 0000000000..24d0ab1633 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-21-v6.9-net-dsa-mt7530-do-not-use-SW_PHY_RST-to-reset-MT7531.patch @@ -0,0 +1,41 @@ +From 80f4f866d7dad41b12cf37476c38766a89b8b5c4 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:42:59 +0200 +Subject: [PATCH 21/30] net: dsa: mt7530: do not use SW_PHY_RST to reset MT7531 + switch +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +According to the document MT7531 Reference Manual for Development Board +v1.0, the SW_PHY_RST bit on the SYS_CTRL register doesn't exist for +MT7531. This is likely why forcing link down on all ports is necessary for +MT7531. + +Therefore, do not set SW_PHY_RST on mt7531_setup(). + +Signed-off-by: Arınç ÜNAL +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 6 ++---- + 1 file changed, 2 insertions(+), 4 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2487,14 +2487,12 @@ mt7531_setup(struct dsa_switch *ds) + val = mt7530_read(priv, MT7531_TOP_SIG_SR); + priv->p5_sgmii = !!(val & PAD_DUAL_SGMII_EN); + +- /* all MACs must be forced link-down before sw reset */ ++ /* Force link down on all ports before internal reset */ + for (i = 0; i < MT7530_NUM_PORTS; i++) + mt7530_write(priv, MT7530_PMCR_P(i), MT7531_FORCE_LNK); + + /* Reset the switch through internal reset */ +- mt7530_write(priv, MT7530_SYS_CTRL, +- SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | +- SYS_CTRL_REG_RST); ++ mt7530_write(priv, MT7530_SYS_CTRL, SYS_CTRL_SW_RST | SYS_CTRL_REG_RST); + + if (!priv->p5_sgmii) { + mt7531_pll_setup(priv); diff --git a/target/linux/generic/backport-6.6/790-22-v6.9-net-dsa-mt7530-get-rid-of-useless-error-returns-on-p.patch b/target/linux/generic/backport-6.6/790-22-v6.9-net-dsa-mt7530-get-rid-of-useless-error-returns-on-p.patch new file mode 100644 index 0000000000..e311a9314f --- /dev/null +++ b/target/linux/generic/backport-6.6/790-22-v6.9-net-dsa-mt7530-get-rid-of-useless-error-returns-on-p.patch @@ -0,0 +1,217 @@ +From 58670652cacb7c5752e01f29979d0ca4cdbfcc0a Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:43:00 +0200 +Subject: [PATCH 22/30] net: dsa: mt7530: get rid of useless error returns on + phylink code path +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Remove error returns on the cases where they are already handled with the +function the mac_port_get_caps member in mt753x_table points to. + +mt7531_mac_config() is also called from mt7531_cpu_port_config() outside of +phylink but the port and interface modes are already handled there. + +Change the functions and the mac_port_config function pointer to void now +that there're no error returns anymore. + +Remove mt753x_is_mac_port() that used to help the said error returns. + +On mt7531_mac_config(), switch to if statements to simplify the code. + +Remove internal phy cases from mt753x_phylink_mac_config(), there is no +need to check the interface mode as that's already handled with the +function the mac_port_get_caps member in mt753x_table points to. + +Acked-by: Daniel Golle +Tested-by: Daniel Golle +Signed-off-by: Arınç ÜNAL +Reviewed-by: Russell King (Oracle) +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 81 ++++++++-------------------------------- + drivers/net/dsa/mt7530.h | 6 +-- + 2 files changed, 19 insertions(+), 68 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2623,7 +2623,7 @@ static void mt7988_mac_port_get_caps(str + } + } + +-static int ++static void + mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode, + phy_interface_t interface) + { +@@ -2633,22 +2633,14 @@ mt7530_mac_config(struct dsa_switch *ds, + mt7530_setup_port5(priv->ds, interface); + else if (port == 6) + mt7530_setup_port6(priv->ds, interface); +- +- return 0; + } + +-static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port, +- phy_interface_t interface, +- struct phy_device *phydev) ++static void mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port, ++ phy_interface_t interface, ++ struct phy_device *phydev) + { + u32 val; + +- if (priv->p5_sgmii) { +- dev_err(priv->dev, "RGMII mode is not available for port %d\n", +- port); +- return -EINVAL; +- } +- + val = mt7530_read(priv, MT7531_CLKGEN_CTRL); + val |= GP_CLK_EN; + val &= ~GP_MODE_MASK; +@@ -2676,20 +2668,14 @@ static int mt7531_rgmii_setup(struct mt7 + case PHY_INTERFACE_MODE_RGMII_ID: + break; + default: +- return -EINVAL; ++ break; + } + } +- mt7530_write(priv, MT7531_CLKGEN_CTRL, val); + +- return 0; +-} +- +-static bool mt753x_is_mac_port(u32 port) +-{ +- return (port == 5 || port == 6); ++ mt7530_write(priv, MT7531_CLKGEN_CTRL, val); + } + +-static int ++static void + mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, + phy_interface_t interface) + { +@@ -2697,42 +2683,21 @@ mt7531_mac_config(struct dsa_switch *ds, + struct phy_device *phydev; + struct dsa_port *dp; + +- if (!mt753x_is_mac_port(port)) { +- dev_err(priv->dev, "port %d is not a MAC port\n", port); +- return -EINVAL; +- } +- +- switch (interface) { +- case PHY_INTERFACE_MODE_RGMII: +- case PHY_INTERFACE_MODE_RGMII_ID: +- case PHY_INTERFACE_MODE_RGMII_RXID: +- case PHY_INTERFACE_MODE_RGMII_TXID: ++ if (phy_interface_mode_is_rgmii(interface)) { + dp = dsa_to_port(ds, port); + phydev = dp->slave->phydev; +- return mt7531_rgmii_setup(priv, port, interface, phydev); +- case PHY_INTERFACE_MODE_SGMII: +- case PHY_INTERFACE_MODE_NA: +- case PHY_INTERFACE_MODE_1000BASEX: +- case PHY_INTERFACE_MODE_2500BASEX: +- /* handled in SGMII PCS driver */ +- return 0; +- default: +- return -EINVAL; ++ mt7531_rgmii_setup(priv, port, interface, phydev); + } +- +- return -EINVAL; + } + +-static int ++static void + mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode, + const struct phylink_link_state *state) + { + struct mt7530_priv *priv = ds->priv; + +- if (!priv->info->mac_port_config) +- return 0; +- +- return priv->info->mac_port_config(ds, port, mode, state->interface); ++ if (priv->info->mac_port_config) ++ priv->info->mac_port_config(ds, port, mode, state->interface); + } + + static struct phylink_pcs * +@@ -2761,17 +2726,11 @@ mt753x_phylink_mac_config(struct dsa_swi + u32 mcr_cur, mcr_new; + + switch (port) { +- case 0 ... 4: +- if (state->interface != PHY_INTERFACE_MODE_GMII && +- state->interface != PHY_INTERFACE_MODE_INTERNAL) +- goto unsupported; +- break; + case 5: + if (priv->p5_interface == state->interface) + break; + +- if (mt753x_mac_config(ds, port, mode, state) < 0) +- goto unsupported; ++ mt753x_mac_config(ds, port, mode, state); + + if (priv->p5_intf_sel != P5_DISABLED) + priv->p5_interface = state->interface; +@@ -2780,16 +2739,10 @@ mt753x_phylink_mac_config(struct dsa_swi + if (priv->p6_interface == state->interface) + break; + +- if (mt753x_mac_config(ds, port, mode, state) < 0) +- goto unsupported; ++ mt753x_mac_config(ds, port, mode, state); + + priv->p6_interface = state->interface; + break; +- default: +-unsupported: +- dev_err(ds->dev, "%s: unsupported %s port: %i\n", +- __func__, phy_modes(state->interface), port); +- return; + } + + mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port)); +@@ -2872,7 +2825,6 @@ mt7531_cpu_port_config(struct dsa_switch + struct mt7530_priv *priv = ds->priv; + phy_interface_t interface; + int speed; +- int ret; + + switch (port) { + case 5: +@@ -2897,9 +2849,8 @@ mt7531_cpu_port_config(struct dsa_switch + else + speed = SPEED_1000; + +- ret = mt7531_mac_config(ds, port, MLO_AN_FIXED, interface); +- if (ret) +- return ret; ++ mt7531_mac_config(ds, port, MLO_AN_FIXED, interface); ++ + mt7530_write(priv, MT7530_PMCR_P(port), + PMCR_CPU_PORT_SETTING(priv->id)); + mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL, +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -750,9 +750,9 @@ struct mt753x_info { + void (*mac_port_validate)(struct dsa_switch *ds, int port, + phy_interface_t interface, + unsigned long *supported); +- int (*mac_port_config)(struct dsa_switch *ds, int port, +- unsigned int mode, +- phy_interface_t interface); ++ void (*mac_port_config)(struct dsa_switch *ds, int port, ++ unsigned int mode, ++ phy_interface_t interface); + }; + + /* struct mt7530_priv - This is the main data structure for holding the state diff --git a/target/linux/generic/backport-6.6/790-23-v6.9-net-dsa-mt7530-get-rid-of-priv-info-cpu_port_config.patch b/target/linux/generic/backport-6.6/790-23-v6.9-net-dsa-mt7530-get-rid-of-priv-info-cpu_port_config.patch new file mode 100644 index 0000000000..e07a7ee71b --- /dev/null +++ b/target/linux/generic/backport-6.6/790-23-v6.9-net-dsa-mt7530-get-rid-of-priv-info-cpu_port_config.patch @@ -0,0 +1,305 @@ +From 859df5cf6ff07a9c930be4681284346aa73dd1fb Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:43:01 +0200 +Subject: [PATCH 23/30] net: dsa: mt7530: get rid of + priv->info->cpu_port_config() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +priv->info->cpu_port_config() is used for MT7531 and the switch on the +MT7988 SoC. It sets up the ports described as a CPU port earlier than the +phylink code path would do. + +This function is useless as: +- Configuring the MACs can be done from the phylink_mac_config code path + instead. +- All the link configuration it does on the CPU ports are later undone with + the port_enable, phylink_mac_config, and then phylink_mac_link_up code + path [1]. + +priv->p5_interface and priv->p6_interface were being used to prevent +configuring the MACs from the phylink_mac_config code path. Remove them now +that they hold no purpose. + +Remove priv->info->cpu_port_config(). On mt753x_phylink_mac_config, switch +to if statements to simplify the code. + +Remove the overwriting of the speed and duplex interfaces for certain +interface modes. Phylink already provides the speed and duplex variables +with proper values. Phylink already sets the max speed of TRGMII to +SPEED_1000. Add SPEED_2500 for PHY_INTERFACE_MODE_2500BASEX to where the +speed and EEE bits are set instead. + +On the switch on the MT7988 SoC, PHY_INTERFACE_MODE_INTERNAL is being used +to describe the interface mode of the 10G MAC, which is of port 6. On +mt7988_cpu_port_config() PMCR_FORCE_SPEED_1000 was set via the +PMCR_CPU_PORT_SETTING() mask. Add SPEED_10000 case to where the speed bits +are set to cover this. No need to add it to where the EEE bits are set as +the "MT7988A Wi-Fi 7 Generation Router Platform: Datasheet (Open Version) +v0.1" document shows that these bits don't exist on the MT7530_PMCR_P(6) +register. + +Remove the definition of PMCR_CPU_PORT_SETTING() now that it holds no +purpose. + +Change mt753x_cpu_port_enable() to void now that there're no error cases +left. + +Link: https://lore.kernel.org/netdev/ZHy2jQLesdYFMQtO@shell.armlinux.org.uk/ [1] +Suggested-by: Russell King (Oracle) +Signed-off-by: Arınç ÜNAL +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 114 +++------------------------------------ + drivers/net/dsa/mt7530.h | 11 ---- + 2 files changed, 7 insertions(+), 118 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1002,18 +1002,10 @@ mt753x_trap_frames(struct mt7530_priv *p + MT753X_BPDU_CPU_ONLY); + } + +-static int ++static void + mt753x_cpu_port_enable(struct dsa_switch *ds, int port) + { + struct mt7530_priv *priv = ds->priv; +- int ret; +- +- /* Setup max capability of CPU port at first */ +- if (priv->info->cpu_port_config) { +- ret = priv->info->cpu_port_config(ds, port); +- if (ret) +- return ret; +- } + + /* Enable Mediatek header mode on the cpu port */ + mt7530_write(priv, MT7530_PVC_P(port), +@@ -1039,8 +1031,6 @@ mt753x_cpu_port_enable(struct dsa_switch + /* Set to fallback mode for independent VLAN learning */ + mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, + MT7530_PORT_FALLBACK_MODE); +- +- return 0; + } + + static int +@@ -2297,8 +2287,6 @@ mt7530_setup(struct dsa_switch *ds) + val |= MHWTRAP_MANUAL; + mt7530_write(priv, MT7530_MHWTRAP, val); + +- priv->p6_interface = PHY_INTERFACE_MODE_NA; +- + mt753x_trap_frames(priv); + + /* Enable and reset MIB counters */ +@@ -2313,9 +2301,7 @@ mt7530_setup(struct dsa_switch *ds) + mt7530_set(priv, MT7530_PSC_P(i), SA_DIS); + + if (dsa_is_cpu_port(ds, i)) { +- ret = mt753x_cpu_port_enable(ds, i); +- if (ret) +- return ret; ++ mt753x_cpu_port_enable(ds, i); + } else { + mt7530_port_disable(ds, i); + +@@ -2419,9 +2405,7 @@ mt7531_setup_common(struct dsa_switch *d + mt7530_set(priv, MT7531_DBG_CNT(i), MT7531_DIS_CLR); + + if (dsa_is_cpu_port(ds, i)) { +- ret = mt753x_cpu_port_enable(ds, i); +- if (ret) +- return ret; ++ mt753x_cpu_port_enable(ds, i); + } else { + mt7530_port_disable(ds, i); + +@@ -2510,10 +2494,6 @@ mt7531_setup(struct dsa_switch *ds) + mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK, + MT7531_GPIO0_INTERRUPT); + +- /* Let phylink decide the interface later. */ +- priv->p5_interface = PHY_INTERFACE_MODE_NA; +- priv->p6_interface = PHY_INTERFACE_MODE_NA; +- + /* Enable PHY core PLL, since phy_device has not yet been created + * provided for phy_[read,write]_mmd_indirect is called, we provide + * our own mt7531_ind_mmd_phy_[read,write] to complete this +@@ -2725,26 +2705,9 @@ mt753x_phylink_mac_config(struct dsa_swi + struct mt7530_priv *priv = ds->priv; + u32 mcr_cur, mcr_new; + +- switch (port) { +- case 5: +- if (priv->p5_interface == state->interface) +- break; +- ++ if (port == 5 || port == 6) + mt753x_mac_config(ds, port, mode, state); + +- if (priv->p5_intf_sel != P5_DISABLED) +- priv->p5_interface = state->interface; +- break; +- case 6: +- if (priv->p6_interface == state->interface) +- break; +- +- mt753x_mac_config(ds, port, mode, state); +- +- priv->p6_interface = state->interface; +- break; +- } +- + mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port)); + mcr_new = mcr_cur; + mcr_new &= ~PMCR_LINK_SETTINGS_MASK; +@@ -2780,17 +2743,10 @@ static void mt753x_phylink_mac_link_up(s + + mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK; + +- /* MT753x MAC works in 1G full duplex mode for all up-clocked +- * variants. +- */ +- if (interface == PHY_INTERFACE_MODE_TRGMII || +- (phy_interface_mode_is_8023z(interface))) { +- speed = SPEED_1000; +- duplex = DUPLEX_FULL; +- } +- + switch (speed) { + case SPEED_1000: ++ case SPEED_2500: ++ case SPEED_10000: + mcr |= PMCR_FORCE_SPEED_1000; + break; + case SPEED_100: +@@ -2808,6 +2764,7 @@ static void mt753x_phylink_mac_link_up(s + if (mode == MLO_AN_PHY && phydev && phy_init_eee(phydev, false) >= 0) { + switch (speed) { + case SPEED_1000: ++ case SPEED_2500: + mcr |= PMCR_FORCE_EEE1G; + break; + case SPEED_100: +@@ -2819,61 +2776,6 @@ static void mt753x_phylink_mac_link_up(s + mt7530_set(priv, MT7530_PMCR_P(port), mcr); + } + +-static int +-mt7531_cpu_port_config(struct dsa_switch *ds, int port) +-{ +- struct mt7530_priv *priv = ds->priv; +- phy_interface_t interface; +- int speed; +- +- switch (port) { +- case 5: +- if (!priv->p5_sgmii) +- interface = PHY_INTERFACE_MODE_RGMII; +- else +- interface = PHY_INTERFACE_MODE_2500BASEX; +- +- priv->p5_interface = interface; +- break; +- case 6: +- interface = PHY_INTERFACE_MODE_2500BASEX; +- +- priv->p6_interface = interface; +- break; +- default: +- return -EINVAL; +- } +- +- if (interface == PHY_INTERFACE_MODE_2500BASEX) +- speed = SPEED_2500; +- else +- speed = SPEED_1000; +- +- mt7531_mac_config(ds, port, MLO_AN_FIXED, interface); +- +- mt7530_write(priv, MT7530_PMCR_P(port), +- PMCR_CPU_PORT_SETTING(priv->id)); +- mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL, +- speed, DUPLEX_FULL, true, true); +- +- return 0; +-} +- +-static int +-mt7988_cpu_port_config(struct dsa_switch *ds, int port) +-{ +- struct mt7530_priv *priv = ds->priv; +- +- mt7530_write(priv, MT7530_PMCR_P(port), +- PMCR_CPU_PORT_SETTING(priv->id)); +- +- mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, +- PHY_INTERFACE_MODE_INTERNAL, NULL, +- SPEED_10000, DUPLEX_FULL, true, true); +- +- return 0; +-} +- + static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port, + struct phylink_config *config) + { +@@ -3132,7 +3034,6 @@ const struct mt753x_info mt753x_table[] + .phy_write_c22 = mt7531_ind_c22_phy_write, + .phy_read_c45 = mt7531_ind_c45_phy_read, + .phy_write_c45 = mt7531_ind_c45_phy_write, +- .cpu_port_config = mt7531_cpu_port_config, + .mac_port_get_caps = mt7531_mac_port_get_caps, + .mac_port_config = mt7531_mac_config, + }, +@@ -3144,7 +3045,6 @@ const struct mt753x_info mt753x_table[] + .phy_write_c22 = mt7531_ind_c22_phy_write, + .phy_read_c45 = mt7531_ind_c45_phy_read, + .phy_write_c45 = mt7531_ind_c45_phy_write, +- .cpu_port_config = mt7988_cpu_port_config, + .mac_port_get_caps = mt7988_mac_port_get_caps, + }, + }; +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -331,13 +331,6 @@ enum mt7530_vlan_port_acc_frm { + PMCR_TX_FC_EN | PMCR_RX_FC_EN | \ + PMCR_FORCE_FDX | PMCR_FORCE_LNK | \ + PMCR_FORCE_EEE1G | PMCR_FORCE_EEE100) +-#define PMCR_CPU_PORT_SETTING(id) (PMCR_FORCE_MODE_ID((id)) | \ +- PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | \ +- PMCR_BACKOFF_EN | PMCR_BACKPR_EN | \ +- PMCR_TX_EN | PMCR_RX_EN | \ +- PMCR_TX_FC_EN | PMCR_RX_FC_EN | \ +- PMCR_FORCE_SPEED_1000 | \ +- PMCR_FORCE_FDX | PMCR_FORCE_LNK) + + #define MT7530_PMEEECR_P(x) (0x3004 + (x) * 0x100) + #define WAKEUP_TIME_1000(x) (((x) & 0xFF) << 24) +@@ -744,7 +737,6 @@ struct mt753x_info { + int regnum); + int (*phy_write_c45)(struct mt7530_priv *priv, int port, int devad, + int regnum, u16 val); +- int (*cpu_port_config)(struct dsa_switch *ds, int port); + void (*mac_port_get_caps)(struct dsa_switch *ds, int port, + struct phylink_config *config); + void (*mac_port_validate)(struct dsa_switch *ds, int port, +@@ -770,7 +762,6 @@ struct mt753x_info { + * @ports: Holding the state among ports + * @reg_mutex: The lock for protecting among process accessing + * registers +- * @p6_interface Holding the current port 6 interface + * @p5_intf_sel: Holding the current port 5 interface select + * @p5_sgmii: Flag for distinguishing if port 5 of the MT7531 switch + * has got SGMII +@@ -792,8 +783,6 @@ struct mt7530_priv { + const struct mt753x_info *info; + unsigned int id; + bool mcm; +- phy_interface_t p6_interface; +- phy_interface_t p5_interface; + enum p5_interface_select p5_intf_sel; + bool p5_sgmii; + u8 mirror_rx; diff --git a/target/linux/generic/backport-6.6/790-24-v6.9-net-dsa-mt7530-get-rid-of-mt753x_mac_config.patch b/target/linux/generic/backport-6.6/790-24-v6.9-net-dsa-mt7530-get-rid-of-mt753x_mac_config.patch new file mode 100644 index 0000000000..95226ace49 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-24-v6.9-net-dsa-mt7530-get-rid-of-mt753x_mac_config.patch @@ -0,0 +1,48 @@ +From c74a98baa8d098157975b3f94e496dd3a73e0864 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:43:02 +0200 +Subject: [PATCH 24/30] net: dsa: mt7530: get rid of mt753x_mac_config() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +There is no need for a separate function to call +priv->info->mac_port_config(). Call it from mt753x_phylink_mac_config() +instead and remove mt753x_mac_config(). + +Signed-off-by: Arınç ÜNAL +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 14 ++------------ + 1 file changed, 2 insertions(+), 12 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2670,16 +2670,6 @@ mt7531_mac_config(struct dsa_switch *ds, + } + } + +-static void +-mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode, +- const struct phylink_link_state *state) +-{ +- struct mt7530_priv *priv = ds->priv; +- +- if (priv->info->mac_port_config) +- priv->info->mac_port_config(ds, port, mode, state->interface); +-} +- + static struct phylink_pcs * + mt753x_phylink_mac_select_pcs(struct dsa_switch *ds, int port, + phy_interface_t interface) +@@ -2705,8 +2695,8 @@ mt753x_phylink_mac_config(struct dsa_swi + struct mt7530_priv *priv = ds->priv; + u32 mcr_cur, mcr_new; + +- if (port == 5 || port == 6) +- mt753x_mac_config(ds, port, mode, state); ++ if ((port == 5 || port == 6) && priv->info->mac_port_config) ++ priv->info->mac_port_config(ds, port, mode, state->interface); + + mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port)); + mcr_new = mcr_cur; diff --git a/target/linux/generic/backport-6.6/790-25-v6.9-net-dsa-mt7530-put-initialising-PCS-devices-code-bac.patch b/target/linux/generic/backport-6.6/790-25-v6.9-net-dsa-mt7530-put-initialising-PCS-devices-code-bac.patch new file mode 100644 index 0000000000..44668444cf --- /dev/null +++ b/target/linux/generic/backport-6.6/790-25-v6.9-net-dsa-mt7530-put-initialising-PCS-devices-code-bac.patch @@ -0,0 +1,57 @@ +From ab1ddb241bc1cb3d80aa51207810edd5cb0bbdc5 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:43:03 +0200 +Subject: [PATCH 25/30] net: dsa: mt7530: put initialising PCS devices code + back to original order +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The commit fae463084032 ("net: dsa: mt753x: fix pcs conversion regression") +fixes regression caused by cpu_port_config manually calling phylink +operations. cpu_port_config was deemed useless and was removed. Therefore, +put initialising PCS devices code back to its original order. + +Signed-off-by: Arınç ÜNAL +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 20 ++++++++++---------- + 1 file changed, 10 insertions(+), 10 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2848,17 +2848,9 @@ static int + mt753x_setup(struct dsa_switch *ds) + { + struct mt7530_priv *priv = ds->priv; +- int i, ret; ++ int ret = priv->info->sw_setup(ds); ++ int i; + +- /* Initialise the PCS devices */ +- for (i = 0; i < priv->ds->num_ports; i++) { +- priv->pcs[i].pcs.ops = priv->info->pcs_ops; +- priv->pcs[i].pcs.neg_mode = true; +- priv->pcs[i].priv = priv; +- priv->pcs[i].port = i; +- } +- +- ret = priv->info->sw_setup(ds); + if (ret) + return ret; + +@@ -2870,6 +2862,14 @@ mt753x_setup(struct dsa_switch *ds) + if (ret && priv->irq) + mt7530_free_irq_common(priv); + ++ /* Initialise the PCS devices */ ++ for (i = 0; i < priv->ds->num_ports; i++) { ++ priv->pcs[i].pcs.ops = priv->info->pcs_ops; ++ priv->pcs[i].pcs.neg_mode = true; ++ priv->pcs[i].priv = priv; ++ priv->pcs[i].port = i; ++ } ++ + if (priv->create_sgmii) { + ret = priv->create_sgmii(priv); + if (ret && priv->irq) diff --git a/target/linux/generic/backport-6.6/790-26-v6.9-net-dsa-mt7530-sort-link-settings-ops-and-force-link.patch b/target/linux/generic/backport-6.6/790-26-v6.9-net-dsa-mt7530-sort-link-settings-ops-and-force-link.patch new file mode 100644 index 0000000000..4992230dc5 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-26-v6.9-net-dsa-mt7530-sort-link-settings-ops-and-force-link.patch @@ -0,0 +1,68 @@ +From aa474698f75f4790a4de2052dd487736d2361b2e Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:43:04 +0200 +Subject: [PATCH 26/30] net: dsa: mt7530: sort link settings ops and force link + down on all ports +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +port_enable and port_disable clears the link settings. Move that to +mt7530_setup() and mt7531_setup_common() which set up the switches. This +way, the link settings are cleared on all ports at setup, and then only +once with phylink_mac_link_down() when a link goes down. + +Enable force mode at setup to apply the force part of the link settings. +This ensures that disabled ports will have their link down. + +Suggested-by: Vladimir Oltean +Signed-off-by: Arınç ÜNAL +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 14 ++++++++++++-- + 1 file changed, 12 insertions(+), 2 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1054,7 +1054,6 @@ mt7530_port_enable(struct dsa_switch *ds + priv->ports[port].enable = true; + mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, + priv->ports[port].pm); +- mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); + + mutex_unlock(&priv->reg_mutex); + +@@ -1074,7 +1073,6 @@ mt7530_port_disable(struct dsa_switch *d + priv->ports[port].enable = false; + mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, + PCR_MATRIX_CLR); +- mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); + + mutex_unlock(&priv->reg_mutex); + } +@@ -2293,6 +2291,12 @@ mt7530_setup(struct dsa_switch *ds) + mt7530_mib_reset(ds); + + for (i = 0; i < MT7530_NUM_PORTS; i++) { ++ /* Clear link settings and enable force mode to force link down ++ * on all ports until they're enabled later. ++ */ ++ mt7530_rmw(priv, MT7530_PMCR_P(i), PMCR_LINK_SETTINGS_MASK | ++ PMCR_FORCE_MODE, PMCR_FORCE_MODE); ++ + /* Disable forwarding by default on all ports */ + mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK, + PCR_MATRIX_CLR); +@@ -2395,6 +2399,12 @@ mt7531_setup_common(struct dsa_switch *d + UNU_FFP_MASK); + + for (i = 0; i < MT7530_NUM_PORTS; i++) { ++ /* Clear link settings and enable force mode to force link down ++ * on all ports until they're enabled later. ++ */ ++ mt7530_rmw(priv, MT7530_PMCR_P(i), PMCR_LINK_SETTINGS_MASK | ++ MT7531_FORCE_MODE, MT7531_FORCE_MODE); ++ + /* Disable forwarding by default on all ports */ + mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK, + PCR_MATRIX_CLR); diff --git a/target/linux/generic/backport-6.6/790-27-v6.9-net-dsa-mt7530-simplify-link-operations.patch b/target/linux/generic/backport-6.6/790-27-v6.9-net-dsa-mt7530-simplify-link-operations.patch new file mode 100644 index 0000000000..ee5353673c --- /dev/null +++ b/target/linux/generic/backport-6.6/790-27-v6.9-net-dsa-mt7530-simplify-link-operations.patch @@ -0,0 +1,83 @@ +From 1ca89c2e349d7c5e045911d741dacf4c83d029e7 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Fri, 1 Mar 2024 12:43:05 +0200 +Subject: [PATCH 27/30] net: dsa: mt7530: simplify link operations +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The "MT7621 Giga Switch Programming Guide v0.3", "MT7531 Reference Manual +for Development Board v1.0", and "MT7988A Wi-Fi 7 Generation Router +Platform: Datasheet (Open Version) v0.1" documents show that these bits are +enabled at reset: + +PMCR_IFG_XMIT(1) (not part of PMCR_LINK_SETTINGS_MASK) +PMCR_MAC_MODE (not part of PMCR_LINK_SETTINGS_MASK) +PMCR_TX_EN +PMCR_RX_EN +PMCR_BACKOFF_EN (not part of PMCR_LINK_SETTINGS_MASK) +PMCR_BACKPR_EN (not part of PMCR_LINK_SETTINGS_MASK) +PMCR_TX_FC_EN +PMCR_RX_FC_EN + +These bits also don't exist on the MT7530_PMCR_P(6) register of the switch +on the MT7988 SoC: + +PMCR_IFG_XMIT() +PMCR_MAC_MODE +PMCR_BACKOFF_EN +PMCR_BACKPR_EN + +Remove the setting of the bits not part of PMCR_LINK_SETTINGS_MASK on +phylink_mac_config as they're already set. + +The bit for setting the port on force mode is already done on +mt7530_setup() and mt7531_setup_common(). So get rid of +PMCR_FORCE_MODE_ID() which helped determine which bit to use for the switch +model. + +Signed-off-by: Arınç ÜNAL +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 12 +----------- + drivers/net/dsa/mt7530.h | 2 -- + 2 files changed, 1 insertion(+), 13 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2703,23 +2703,13 @@ mt753x_phylink_mac_config(struct dsa_swi + const struct phylink_link_state *state) + { + struct mt7530_priv *priv = ds->priv; +- u32 mcr_cur, mcr_new; + + if ((port == 5 || port == 6) && priv->info->mac_port_config) + priv->info->mac_port_config(ds, port, mode, state->interface); + +- mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port)); +- mcr_new = mcr_cur; +- mcr_new &= ~PMCR_LINK_SETTINGS_MASK; +- mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN | +- PMCR_BACKPR_EN | PMCR_FORCE_MODE_ID(priv->id); +- + /* Are we connected to external phy */ + if (port == 5 && dsa_is_user_port(ds, 5)) +- mcr_new |= PMCR_EXT_PHY; +- +- if (mcr_new != mcr_cur) +- mt7530_write(priv, MT7530_PMCR_P(port), mcr_new); ++ mt7530_set(priv, MT7530_PMCR_P(port), PMCR_EXT_PHY); + } + + static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port, +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -324,8 +324,6 @@ enum mt7530_vlan_port_acc_frm { + MT7531_FORCE_DPX | \ + MT7531_FORCE_RX_FC | \ + MT7531_FORCE_TX_FC) +-#define PMCR_FORCE_MODE_ID(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \ +- MT7531_FORCE_MODE : PMCR_FORCE_MODE) + #define PMCR_LINK_SETTINGS_MASK (PMCR_TX_EN | PMCR_FORCE_SPEED_1000 | \ + PMCR_RX_EN | PMCR_FORCE_SPEED_100 | \ + PMCR_TX_FC_EN | PMCR_RX_FC_EN | \ diff --git a/target/linux/generic/backport-6.6/790-28-v6.9-net-dsa-mt7530-disable-LEDs-before-reset.patch b/target/linux/generic/backport-6.6/790-28-v6.9-net-dsa-mt7530-disable-LEDs-before-reset.patch new file mode 100644 index 0000000000..19a04a7164 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-28-v6.9-net-dsa-mt7530-disable-LEDs-before-reset.patch @@ -0,0 +1,94 @@ +From de16cf680331cd0bd7db97c3f8d376f5eac39cae Mon Sep 17 00:00:00 2001 +From: Justin Swartz +Date: Tue, 5 Mar 2024 06:39:51 +0200 +Subject: [PATCH 28/30] net: dsa: mt7530: disable LEDs before reset + +Disable LEDs just before resetting the MT7530 to avoid +situations where the ESW_P4_LED_0 and ESW_P3_LED_0 pin +states may cause an unintended external crystal frequency +to be selected. + +The HT_XTAL_FSEL (External Crystal Frequency Selection) +field of HWTRAP (the Hardware Trap register) stores a +2-bit value that represents the state of the ESW_P4_LED_0 +and ESW_P4_LED_0 pins (seemingly) sampled just after the +MT7530 has been reset, as: + + ESW_P4_LED_0 ESW_P3_LED_0 Frequency + ----------------------------------------- + 0 1 20MHz + 1 0 40MHz + 1 1 25MHz + +The value of HT_XTAL_FSEL is bootstrapped by pulling +ESW_P4_LED_0 and ESW_P3_LED_0 up or down accordingly, +but: + + if a 40MHz crystal has been selected and + the ESW_P3_LED_0 pin is high during reset, + + or a 20MHz crystal has been selected and + the ESW_P4_LED_0 pin is high during reset, + + then the value of HT_XTAL_FSEL will indicate + that a 25MHz crystal is present. + +By default, the state of the LED pins is PHY controlled +to reflect the link state. + +To illustrate, if a board has: + + 5 ports with active low LED control, + and HT_XTAL_FSEL bootstrapped for 40MHz. + +When the MT7530 is powered up without any external +connection, only the LED associated with Port 3 is +illuminated as ESW_P3_LED_0 is low. + +In this state, directly after mt7530_setup()'s reset +is performed, the HWTRAP register (0x7800) reflects +the intended HT_XTAL_FSEL (HWTRAP bits 10:9) of 40MHz: + + mt7530-mdio mdio-bus:1f: mt7530_read: 00007800 == 00007dcf + + >>> bin(0x7dcf >> 9 & 0b11) + '0b10' + +But if a cable is connected to Port 3 and the link +is active before mt7530_setup()'s reset takes place, +then HT_XTAL_FSEL seems to be set for 25MHz: + + mt7530-mdio mdio-bus:1f: mt7530_read: 00007800 == 00007fcf + + >>> bin(0x7fcf >> 9 & 0b11) + '0b11' + +Once HT_XTAL_FSEL reflects 25MHz, none of the ports +are functional until the MT7621 (or MT7530 itself) +is reset. + +By disabling the LED pins just before reset, the chance +of an unintended HT_XTAL_FSEL value is reduced. + +Signed-off-by: Justin Swartz +Link: https://lore.kernel.org/r/20240305043952.21590-1-justin.swartz@risingedge.co.za +Signed-off-by: Jakub Kicinski +--- + drivers/net/dsa/mt7530.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2228,6 +2228,12 @@ mt7530_setup(struct dsa_switch *ds) + } + } + ++ /* Disable LEDs before reset to prevent the MT7530 sampling a ++ * potentially incorrect HT_XTAL_FSEL value. ++ */ ++ mt7530_write(priv, MT7530_LED_EN, 0); ++ usleep_range(1000, 1100); ++ + /* Reset whole chip through gpio pin or memory-mapped registers for + * different type of hardware + */ diff --git a/target/linux/generic/backport-6.6/790-29-v6.9-net-dsa-mt7530-fix-improper-frames-on-all-25MHz-and-.patch b/target/linux/generic/backport-6.6/790-29-v6.9-net-dsa-mt7530-fix-improper-frames-on-all-25MHz-and-.patch new file mode 100644 index 0000000000..57a775da39 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-29-v6.9-net-dsa-mt7530-fix-improper-frames-on-all-25MHz-and-.patch @@ -0,0 +1,74 @@ +From fa14c96eab3ec5b7cb44b06c0a54a851849a9810 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Wed, 20 Mar 2024 23:45:30 +0300 +Subject: [PATCH 29/30] net: dsa: mt7530: fix improper frames on all 25MHz and + 40MHz XTAL MT7530 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The MT7530 switch after reset initialises with a core clock frequency that +works with a 25MHz XTAL connected to it. For 40MHz XTAL, the core clock +frequency must be set to 500MHz. + +The mt7530_pll_setup() function is responsible of setting the core clock +frequency. Currently, it runs on MT7530 with 25MHz and 40MHz XTAL. This +causes MT7530 switch with 25MHz XTAL to egress and ingress frames +improperly. + +Introduce a check to run it only on MT7530 with 40MHz XTAL. + +The core clock frequency is set by writing to a switch PHY's register. +Access to the PHY's register is done via the MDIO bus the switch is also +on. Therefore, it works only when the switch makes switch PHYs listen on +the MDIO bus the switch is on. This is controlled either by the state of +the ESW_P1_LED_1 pin after reset deassertion or modifying bit 5 of the +modifiable trap register. + +When ESW_P1_LED_1 is pulled high, PHY indirect access is used. That means +accessing PHY registers via the PHY indirect access control register of the +switch. + +When ESW_P1_LED_1 is pulled low, PHY direct access is used. That means +accessing PHY registers via the MDIO bus the switch is on. + +For MT7530 switch with 40MHz XTAL on a board with ESW_P1_LED_1 pulled high, +the core clock frequency won't be set to 500MHz, causing the switch to +egress and ingress frames improperly. + +Run mt7530_pll_setup() after PHY direct access is set on the modifiable +trap register. + +With these two changes, all MT7530 switches with 25MHz and 40MHz, and +P1_LED_1 pulled high or low, will egress and ingress frames properly. + +Link: https://github.com/BPI-SINOVOIP/BPI-R2-bsp/blob/4a5dd143f2172ec97a2872fa29c7c4cd520f45b5/linux-mt/drivers/net/ethernet/mediatek/gsw_mt7623.c#L1039 +Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch") +Signed-off-by: Arınç ÜNAL +Link: https://lore.kernel.org/r/20240320-for-net-mt7530-fix-25mhz-xtal-with-direct-phy-access-v1-1-d92f605f1160@arinc9.com +Signed-off-by: Paolo Abeni +--- + drivers/net/dsa/mt7530.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2274,8 +2274,6 @@ mt7530_setup(struct dsa_switch *ds) + SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | + SYS_CTRL_REG_RST); + +- mt7530_pll_setup(priv); +- + /* Lower Tx driving for TRGMII path */ + for (i = 0; i < NUM_TRGMII_CTRL; i++) + mt7530_write(priv, MT7530_TRGMII_TD_ODT(i), +@@ -2291,6 +2289,9 @@ mt7530_setup(struct dsa_switch *ds) + val |= MHWTRAP_MANUAL; + mt7530_write(priv, MT7530_MHWTRAP, val); + ++ if ((val & HWTRAP_XTAL_MASK) == HWTRAP_XTAL_40MHZ) ++ mt7530_pll_setup(priv); ++ + mt753x_trap_frames(priv); + + /* Enable and reset MIB counters */ diff --git a/target/linux/generic/backport-6.6/790-30-v6.9-net-dsa-mt7530-prevent-possible-incorrect-XTAL-frequ.patch b/target/linux/generic/backport-6.6/790-30-v6.9-net-dsa-mt7530-prevent-possible-incorrect-XTAL-frequ.patch new file mode 100644 index 0000000000..f1c4db49dc --- /dev/null +++ b/target/linux/generic/backport-6.6/790-30-v6.9-net-dsa-mt7530-prevent-possible-incorrect-XTAL-frequ.patch @@ -0,0 +1,154 @@ +From b9547109205c5e0a27e5bed568b0fc183fff906b Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= +Date: Thu, 14 Mar 2024 12:28:35 +0300 +Subject: [PATCH 30/30] net: dsa: mt7530: prevent possible incorrect XTAL + frequency selection +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +On MT7530, the HT_XTAL_FSEL field of the HWTRAP register stores a 2-bit +value that represents the frequency of the crystal oscillator connected to +the switch IC. The field is populated by the state of the ESW_P4_LED_0 and +ESW_P4_LED_0 pins, which is done right after reset is deasserted. + + ESW_P4_LED_0 ESW_P3_LED_0 Frequency + ----------------------------------------- + 0 0 Reserved + 0 1 20MHz + 1 0 40MHz + 1 1 25MHz + +On MT7531, the XTAL25 bit of the STRAP register stores this. The LAN0LED0 +pin is used to populate the bit. 25MHz when the pin is high, 40MHz when +it's low. + +These pins are also used with LEDs, therefore, their state can be set to +something other than the bootstrapping configuration. For example, a link +may be established on port 3 before the DSA subdriver takes control of the +switch which would set ESW_P3_LED_0 to high. + +Currently on mt7530_setup() and mt7531_setup(), 1000 - 1100 usec delay is +described between reset assertion and deassertion. Some switch ICs in real +life conditions cannot always have these pins set back to the bootstrapping +configuration before reset deassertion in this amount of delay. This causes +wrong crystal frequency to be selected which puts the switch in a +nonfunctional state after reset deassertion. + +The tests below are conducted on an MT7530 with a 40MHz crystal oscillator +by Justin Swartz. + +With a cable from an active peer connected to port 3 before reset, an +incorrect crystal frequency (0b11 = 25MHz) is selected: + + [1] [3] [5] + : : : + _____________________________ __________________ +ESW_P4_LED_0 |_______| + _____________________________ +ESW_P3_LED_0 |__________________________ + + : : : : + : : [4]...: + : : + [2]................: + +[1] Reset is asserted. +[2] Period of 1000 - 1100 usec. +[3] Reset is deasserted. +[4] Period of 315 usec. HWTRAP register is populated with incorrect + XTAL frequency. +[5] Signals reflect the bootstrapped configuration. + +Increase the delay between reset_control_assert() and +reset_control_deassert(), and gpiod_set_value_cansleep(priv->reset, 0) and +gpiod_set_value_cansleep(priv->reset, 1) to 5000 - 5100 usec. This amount +ensures a higher possibility that the switch IC will have these pins back +to the bootstrapping configuration before reset deassertion. + +With a cable from an active peer connected to port 3 before reset, the +correct crystal frequency (0b10 = 40MHz) is selected: + + [1] [2-1] [3] [5] + : : : : + _____________________________ __________________ +ESW_P4_LED_0 |_______| + ___________________ _______ +ESW_P3_LED_0 |_________| |__________________ + + : : : : : + : [2-2]...: [4]...: + [2]................: + +[1] Reset is asserted. +[2] Period of 5000 - 5100 usec. +[2-1] ESW_P3_LED_0 goes low. +[2-2] Remaining period of 5000 - 5100 usec. +[3] Reset is deasserted. +[4] Period of 310 usec. HWTRAP register is populated with bootstrapped + XTAL frequency. +[5] Signals reflect the bootstrapped configuration. + +ESW_P3_LED_0 low period before reset deassertion: + + 5000 usec + - 5100 usec + TEST RESET HOLD + # (usec) + --------------------- + 1 5410 + 2 5440 + 3 4375 + 4 5490 + 5 5475 + 6 4335 + 7 4370 + 8 5435 + 9 4205 + 10 4335 + 11 3750 + 12 3170 + 13 4395 + 14 4375 + 15 3515 + 16 4335 + 17 4220 + 18 4175 + 19 4175 + 20 4350 + + Min 3170 + Max 5490 + + Median 4342.500 + Avg 4466.500 + +Revert commit 2920dd92b980 ("net: dsa: mt7530: disable LEDs before reset"). +Changing the state of pins via reset assertion is simpler and more +efficient than doing so by setting the LED controller off. + +Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch") +Fixes: c288575f7810 ("net: dsa: mt7530: Add the support of MT7531 switch") +Co-developed-by: Justin Swartz +Signed-off-by: Justin Swartz +Signed-off-by: Arınç ÜNAL +Signed-off-by: David S. Miller +--- + drivers/net/dsa/mt7530.c | 6 ------ + 1 file changed, 6 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2228,12 +2228,6 @@ mt7530_setup(struct dsa_switch *ds) + } + } + +- /* Disable LEDs before reset to prevent the MT7530 sampling a +- * potentially incorrect HT_XTAL_FSEL value. +- */ +- mt7530_write(priv, MT7530_LED_EN, 0); +- usleep_range(1000, 1100); +- + /* Reset whole chip through gpio pin or memory-mapped registers for + * different type of hardware + */ diff --git a/target/linux/generic/pending-6.6/723-net-mt7531-ensure-all-MACs-are-powered-down-before-r.patch b/target/linux/generic/pending-6.6/723-net-mt7531-ensure-all-MACs-are-powered-down-before-r.patch deleted file mode 100644 index 8028dc826f..0000000000 --- a/target/linux/generic/pending-6.6/723-net-mt7531-ensure-all-MACs-are-powered-down-before-r.patch +++ /dev/null @@ -1,28 +0,0 @@ -From 3fb8841513c4ec3a2e5d366df86230c45f239a57 Mon Sep 17 00:00:00 2001 -From: Alexander Couzens -Date: Sat, 13 Aug 2022 13:08:22 +0200 -Subject: [PATCH 03/10] net: mt7531: ensure all MACs are powered down before - reset - -The datasheet [1] explicit describes it as requirement for a reset. - -[1] MT7531 Reference Manual for Development Board rev 1.0, page 735 - -Signed-off-by: Alexander Couzens ---- - drivers/net/dsa/mt7530.c | 4 ++++ - 1 file changed, 4 insertions(+) - ---- a/drivers/net/dsa/mt7530.c -+++ b/drivers/net/dsa/mt7530.c -@@ -2304,6 +2304,10 @@ mt7530_setup(struct dsa_switch *ds) - return -ENODEV; - } - -+ /* all MACs must be forced link-down before sw reset */ -+ for (i = 0; i < MT7530_NUM_PORTS; i++) -+ mt7530_write(priv, MT7530_PMCR_P(i), MT7531_FORCE_LNK); -+ - /* Reset the switch through internal reset */ - mt7530_write(priv, MT7530_SYS_CTRL, - SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | diff --git a/target/linux/generic/pending-6.6/795-mt7530-register-OF-node-for-internal-MDIO-bus.patch b/target/linux/generic/pending-6.6/795-mt7530-register-OF-node-for-internal-MDIO-bus.patch deleted file mode 100644 index 4fa5c4ea96..0000000000 --- a/target/linux/generic/pending-6.6/795-mt7530-register-OF-node-for-internal-MDIO-bus.patch +++ /dev/null @@ -1,43 +0,0 @@ -From 1d81e51d6d79d9098013b2e8cdd677bae998c5d8 Mon Sep 17 00:00:00 2001 -From: David Bauer -Date: Fri, 28 Apr 2023 02:22:59 +0200 -Subject: [PATCH 1/2] mt7530: register OF node for internal MDIO bus - -The MT753x switches provide a switch-internal MDIO bus for the embedded -PHYs. - -Register a OF sub-node on the switch OF-node for this internal MDIO bus. -This allows to configure the embedded PHYs using device-tree. - -Signed-off-by: David Bauer ---- - drivers/net/dsa/mt7530.c | 7 ++++++- - 1 file changed, 6 insertions(+), 1 deletion(-) - ---- a/drivers/net/dsa/mt7530.c -+++ b/drivers/net/dsa/mt7530.c -@@ -2192,10 +2192,13 @@ mt7530_setup_mdio(struct mt7530_priv *pr - { - struct dsa_switch *ds = priv->ds; - struct device *dev = priv->dev; -+ struct device_node *np, *mnp; - struct mii_bus *bus; - static int idx; - int ret; - -+ np = priv->dev->of_node; -+ - bus = devm_mdiobus_alloc(dev); - if (!bus) - return -ENOMEM; -@@ -2214,7 +2217,9 @@ mt7530_setup_mdio(struct mt7530_priv *pr - if (priv->irq) - mt7530_setup_mdio_irq(priv); - -- ret = devm_mdiobus_register(dev, bus); -+ mnp = of_get_child_by_name(np, "mdio"); -+ ret = devm_of_mdiobus_register(dev, bus, mnp); -+ of_node_put(mnp); - if (ret) { - dev_err(dev, "failed to register MDIO bus: %d\n", ret); - if (priv->irq)