diff options
Diffstat (limited to 'target/linux/mediatek/patches-5.15/942-net-ethernet-mtk_wed-move-cpuboot-in-a-dedicated-dts.patch')
| -rw-r--r-- | target/linux/mediatek/patches-5.15/942-net-ethernet-mtk_wed-move-cpuboot-in-a-dedicated-dts.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/942-net-ethernet-mtk_wed-move-cpuboot-in-a-dedicated-dts.patch b/target/linux/mediatek/patches-5.15/942-net-ethernet-mtk_wed-move-cpuboot-in-a-dedicated-dts.patch new file mode 100644 index 0000000000..57f8afe474 --- /dev/null +++ b/target/linux/mediatek/patches-5.15/942-net-ethernet-mtk_wed-move-cpuboot-in-a-dedicated-dts.patch @@ -0,0 +1,96 @@ +From f292d1bf83ec160bef2532b58aa08f5b71041923 Mon Sep 17 00:00:00 2001 +Message-Id: <f292d1bf83ec160bef2532b58aa08f5b71041923.1678716918.git.lorenzo@kernel.org> +In-Reply-To: <3cf212c4ce6cd72c09bc47f35f539ba0afd4d106.1678716918.git.lorenzo@kernel.org> +References: <3cf212c4ce6cd72c09bc47f35f539ba0afd4d106.1678716918.git.lorenzo@kernel.org> +From: Lorenzo Bianconi <lorenzo@kernel.org> +Date: Sat, 11 Mar 2023 18:13:04 +0100 +Subject: [PATCH net-next 2/2] net: ethernet: mtk_wed: move cpuboot in a + dedicated dts node + +Since the cpuboot memory region is not part of the RAM SoC, move cpuboot +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 cpuboot was +defined as reserved-memory child node. + +Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> +--- + drivers/net/ethernet/mediatek/mtk_wed_mcu.c | 34 +++++++++++++++++---- + drivers/net/ethernet/mediatek/mtk_wed_wo.h | 3 +- + 2 files changed, 30 insertions(+), 7 deletions(-) + +diff --git a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c +index 6624f6d6abdd..797c3b412ab6 100644 +--- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c ++++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c +@@ -18,12 +18,23 @@ + + static u32 wo_r32(struct mtk_wed_wo *wo, u32 reg) + { +- return readl(wo->boot.addr + reg); ++ u32 val; ++ ++ if (!wo->boot_regmap) ++ return readl(wo->boot.addr + reg); ++ ++ if (regmap_read(wo->boot_regmap, reg, &val)) ++ val = ~0; ++ ++ return val; + } + + static void wo_w32(struct mtk_wed_wo *wo, u32 reg, u32 val) + { +- writel(val, wo->boot.addr + reg); ++ if (wo->boot_regmap) ++ regmap_write(wo->boot_regmap, reg, val); ++ else ++ writel(val, wo->boot.addr + reg); + } + + static struct sk_buff * +@@ -316,10 +327,21 @@ mtk_wed_mcu_load_firmware(struct mtk_wed_wo *wo) + return ret; + } + +- wo->boot.name = "wo-boot"; +- ret = mtk_wed_get_reserved_memory_region(wo, &wo->boot); +- if (ret) +- return ret; ++ wo->boot_regmap = syscon_regmap_lookup_by_phandle(wo->hw->node, ++ "mediatek,wo-cpuboot"); ++ if (IS_ERR(wo->boot_regmap)) { ++ if (wo->boot_regmap != ERR_PTR(-ENODEV)) ++ return PTR_ERR(wo->boot_regmap); ++ ++ /* For backward compatibility, we need to check if cpu_boot ++ * is defined through reserved memory property. ++ */ ++ wo->boot_regmap = NULL; ++ wo->boot.name = "wo-boot"; ++ ret = mtk_wed_get_reserved_memory_region(wo, &wo->boot); ++ if (ret) ++ return ret; ++ } + + /* set dummy cr */ + wed_w32(wo->hw->wed_dev, MTK_WED_SCR0 + 4 * MTK_WED_DUMMY_CR_FWDL, +diff --git a/drivers/net/ethernet/mediatek/mtk_wed_wo.h b/drivers/net/ethernet/mediatek/mtk_wed_wo.h +index dbcf42ce9173..c03071203cc0 100644 +--- a/drivers/net/ethernet/mediatek/mtk_wed_wo.h ++++ b/drivers/net/ethernet/mediatek/mtk_wed_wo.h +@@ -227,7 +227,8 @@ struct mtk_wed_wo_queue { + + struct mtk_wed_wo { + struct mtk_wed_hw *hw; +- struct mtk_wed_wo_memory_region boot; ++ struct mtk_wed_wo_memory_region boot; /* backward compatibility */ ++ struct regmap *boot_regmap; + + struct mtk_wed_wo_queue q_tx; + struct mtk_wed_wo_queue q_rx; +-- +2.39.2 + |