58 lines
1.9 KiB
Diff
58 lines
1.9 KiB
Diff
From b74ba226be2c45091b93bd49192bdd6d2178729e Mon Sep 17 00:00:00 2001
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Message-Id: <b74ba226be2c45091b93bd49192bdd6d2178729e.1678718888.git.lorenzo@kernel.org>
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In-Reply-To: <f3565e6c2276411275e707a5442d3f69cc111273.1678718888.git.lorenzo@kernel.org>
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References: <f3565e6c2276411275e707a5442d3f69cc111273.1678718888.git.lorenzo@kernel.org>
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Mon, 13 Mar 2023 15:45:16 +0100
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Subject: [PATCH net-next 3/3] net: ethernet: mtk_wed: move dlm a dedicated dts
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node
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Since the dlm memory region is not part of the RAM SoC, move dlm in a
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deidicated syscon node.
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This patch helps to keep backward-compatibility with older version of
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uboot codebase where we have a limit of 8 reserved-memory dts child
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nodes.
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Keep backward-compatibility with older dts version where dlm was defined
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as reserved-memory child node.
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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---
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drivers/net/ethernet/mediatek/mtk_wed.c | 19 +++++++++++++++++++
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1 file changed, 19 insertions(+)
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--- a/drivers/net/ethernet/mediatek/mtk_wed.c
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+++ b/drivers/net/ethernet/mediatek/mtk_wed.c
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@@ -1320,6 +1320,24 @@ mtk_wed_rro_alloc(struct mtk_wed_device
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struct device_node *np;
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int index;
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+ np = of_parse_phandle(dev->hw->node, "mediatek,wo-dlm", 0);
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+ if (np) {
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+ struct resource res;
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+ int ret;
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+
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+ ret = of_address_to_resource(np, 0, &res);
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+ of_node_put(np);
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+
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+ if (ret < 0)
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+ return ret;
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+
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+ dev->rro.miod_phys = res.start;
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+ goto out;
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+ }
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+
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+ /* For backward compatibility, we need to check if DLM
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+ * node is defined through reserved memory property.
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+ */
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index = of_property_match_string(dev->hw->node, "memory-region-names",
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"wo-dlm");
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if (index < 0)
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@@ -1336,6 +1354,7 @@ mtk_wed_rro_alloc(struct mtk_wed_device
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return -ENODEV;
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dev->rro.miod_phys = rmem->base;
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+out:
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dev->rro.fdbk_phys = MTK_WED_MIOD_COUNT + dev->rro.miod_phys;
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return mtk_wed_rro_ring_alloc(dev, &dev->rro.ring,
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