58 lines
1.9 KiB
Diff
58 lines
1.9 KiB
Diff
From b74ba226be2c45091b93bd49192bdd6d2178729e Mon Sep 17 00:00:00 2001
|
|
Message-Id: <b74ba226be2c45091b93bd49192bdd6d2178729e.1678718888.git.lorenzo@kernel.org>
|
|
In-Reply-To: <f3565e6c2276411275e707a5442d3f69cc111273.1678718888.git.lorenzo@kernel.org>
|
|
References: <f3565e6c2276411275e707a5442d3f69cc111273.1678718888.git.lorenzo@kernel.org>
|
|
From: Lorenzo Bianconi <lorenzo@kernel.org>
|
|
Date: Mon, 13 Mar 2023 15:45:16 +0100
|
|
Subject: [PATCH net-next 3/3] net: ethernet: mtk_wed: move dlm a dedicated dts
|
|
node
|
|
|
|
Since the dlm memory region is not part of the RAM SoC, move dlm in a
|
|
deidicated syscon node.
|
|
This patch helps to keep backward-compatibility with older version of
|
|
uboot codebase where we have a limit of 8 reserved-memory dts child
|
|
nodes.
|
|
Keep backward-compatibility with older dts version where dlm was defined
|
|
as reserved-memory child node.
|
|
|
|
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
|
|
---
|
|
drivers/net/ethernet/mediatek/mtk_wed.c | 19 +++++++++++++++++++
|
|
1 file changed, 19 insertions(+)
|
|
|
|
--- a/drivers/net/ethernet/mediatek/mtk_wed.c
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_wed.c
|
|
@@ -1322,6 +1322,24 @@ mtk_wed_rro_alloc(struct mtk_wed_device
|
|
struct device_node *np;
|
|
int index;
|
|
|
|
+ np = of_parse_phandle(dev->hw->node, "mediatek,wo-dlm", 0);
|
|
+ if (np) {
|
|
+ struct resource res;
|
|
+ int ret;
|
|
+
|
|
+ ret = of_address_to_resource(np, 0, &res);
|
|
+ of_node_put(np);
|
|
+
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ dev->rro.miod_phys = res.start;
|
|
+ goto out;
|
|
+ }
|
|
+
|
|
+ /* For backward compatibility, we need to check if DLM
|
|
+ * node is defined through reserved memory property.
|
|
+ */
|
|
index = of_property_match_string(dev->hw->node, "memory-region-names",
|
|
"wo-dlm");
|
|
if (index < 0)
|
|
@@ -1338,6 +1356,7 @@ mtk_wed_rro_alloc(struct mtk_wed_device
|
|
return -ENODEV;
|
|
|
|
dev->rro.miod_phys = rmem->base;
|
|
+out:
|
|
dev->rro.fdbk_phys = MTK_WED_MIOD_COUNT + dev->rro.miod_phys;
|
|
|
|
return mtk_wed_rro_ring_alloc(dev, &dev->rro.ring,
|