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92 lines
2.7 KiB
Diff
92 lines
2.7 KiB
Diff
From f3565e6c2276411275e707a5442d3f69cc111273 Mon Sep 17 00:00:00 2001
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Message-Id: <f3565e6c2276411275e707a5442d3f69cc111273.1678718888.git.lorenzo@kernel.org>
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Sun, 12 Mar 2023 18:51:47 +0100
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Subject: [PATCH net-next 1/3] net: ethernet: mtk_wed: move ilm a dedicated dts
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node
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Since the ilm memory region is not part of the RAM SoC, move ilm 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 ilm 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_mcu.c | 55 ++++++++++++++++++---
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1 file changed, 49 insertions(+), 6 deletions(-)
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--- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
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+++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
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@@ -300,6 +300,52 @@ next:
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}
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static int
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+mtk_wed_mcu_load_memory_regions(struct mtk_wed_wo *wo,
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+ struct mtk_wed_wo_memory_region *region)
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+{
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+ struct device_node *np;
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+ int ret;
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+
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+ /* firmware EMI memory region */
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+ ret = mtk_wed_get_reserved_memory_region(wo,
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+ ®ion[MTK_WED_WO_REGION_EMI]);
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+ if (ret)
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+ return ret;
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+
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+ /* firmware DATA memory region */
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+ ret = mtk_wed_get_reserved_memory_region(wo,
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+ ®ion[MTK_WED_WO_REGION_DATA]);
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+ if (ret)
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+ return ret;
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+
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+ np = of_parse_phandle(wo->hw->node, "mediatek,wo-ilm", 0);
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+ if (np) {
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+ struct mtk_wed_wo_memory_region *ilm_region;
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+ struct resource res;
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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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+ ilm_region = ®ion[MTK_WED_WO_REGION_ILM];
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+ ilm_region->phy_addr = res.start;
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+ ilm_region->size = resource_size(&res);
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+ ilm_region->addr = devm_ioremap(wo->hw->dev, res.start,
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+ resource_size(&res));
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+
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+ return IS_ERR(ilm_region->addr) ? PTR_ERR(ilm_region->addr) : 0;
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+ }
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+
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+ /* For backward compatibility, we need to check if ILM
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+ * node is defined through reserved memory property.
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+ */
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+ return mtk_wed_get_reserved_memory_region(wo,
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+ ®ion[MTK_WED_WO_REGION_ILM]);
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+}
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+
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+static int
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mtk_wed_mcu_load_firmware(struct mtk_wed_wo *wo)
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{
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static struct mtk_wed_wo_memory_region mem_region[] = {
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@@ -320,12 +366,9 @@ mtk_wed_mcu_load_firmware(struct mtk_wed
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u32 val, boot_cr;
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int ret, i;
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- /* load firmware region metadata */
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- for (i = 0; i < ARRAY_SIZE(mem_region); i++) {
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- ret = mtk_wed_get_reserved_memory_region(wo, &mem_region[i]);
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- if (ret)
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- return ret;
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- }
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+ ret = mtk_wed_mcu_load_memory_regions(wo, mem_region);
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+ if (ret)
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+ return ret;
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wo->boot_regmap = syscon_regmap_lookup_by_phandle(wo->hw->node,
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"mediatek,wo-cpuboot");
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