29 lines
932 B
Diff
29 lines
932 B
Diff
From 3fb8841513c4ec3a2e5d366df86230c45f239a57 Mon Sep 17 00:00:00 2001
|
|
From: Alexander Couzens <lynxis@fe80.eu>
|
|
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 <lynxis@fe80.eu>
|
|
---
|
|
drivers/net/dsa/mt7530.c | 4 ++++
|
|
1 file changed, 4 insertions(+)
|
|
|
|
--- a/drivers/net/dsa/mt7530.c
|
|
+++ b/drivers/net/dsa/mt7530.c
|
|
@@ -2252,6 +2252,10 @@ 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 |
|