From f3565e6c2276411275e707a5442d3f69cc111273 Mon Sep 17 00:00:00 2001 Message-Id: From: Lorenzo Bianconi Date: Sun, 12 Mar 2023 18:51:47 +0100 Subject: [PATCH net-next 1/3] net: ethernet: mtk_wed: move ilm a dedicated dts node Since the ilm memory region is not part of the RAM SoC, move ilm 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 ilm was defined as reserved-memory child node. Signed-off-by: Lorenzo Bianconi --- drivers/net/ethernet/mediatek/mtk_wed_mcu.c | 55 ++++++++++++++++++--- 1 file changed, 49 insertions(+), 6 deletions(-) --- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c +++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c @@ -320,6 +320,39 @@ next: } static int +mtk_wed_mcu_load_ilm(struct mtk_wed_wo *wo) +{ + struct mtk_wed_wo_memory_region *ilm_region; + struct resource res; + struct device_node *np; + int ret; + + np = of_parse_phandle(wo->hw->node, "mediatek,wo-ilm", 0); + if (!np) + return 0; + + ret = of_address_to_resource(np, 0, &res); + of_node_put(np); + + if (ret < 0) + return ret; + + ilm_region = &mem_region[MTK_WED_WO_REGION_ILM]; + ilm_region->phy_addr = res.start; + ilm_region->size = resource_size(&res); + ilm_region->addr = devm_ioremap(wo->hw->dev, res.start, + resource_size(&res)); + + if (!IS_ERR(ilm_region->addr)) + return 0; + + ret = PTR_ERR(ilm_region->addr); + ilm_region->addr = NULL; + + return ret; +} + +static int mtk_wed_mcu_load_firmware(struct mtk_wed_wo *wo) { const struct mtk_wed_fw_trailer *trailer; @@ -328,14 +361,20 @@ mtk_wed_mcu_load_firmware(struct mtk_wed u32 val, boot_cr; int ret, i; + mtk_wed_mcu_load_ilm(wo); wo->boot_regmap = syscon_regmap_lookup_by_phandle(wo->hw->node, "mediatek,wo-cpuboot"); /* load firmware region metadata */ for (i = 0; i < ARRAY_SIZE(mem_region); i++) { - int index = of_property_match_string(wo->hw->node, - "memory-region-names", - mem_region[i].name); + int index; + + if (mem_region[i].addr) + continue; + + index = of_property_match_string(wo->hw->node, + "memory-region-names", + mem_region[i].name); if (index < 0) continue;