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- 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 <[email protected]>
- 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 <[email protected]>
- ---
- 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
- @@ -1321,6 +1321,24 @@ 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)
- @@ -1337,6 +1355,7 @@ 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,
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