From 6972e498d33ec896c676b7af91e3bfb00aa846a1 Mon Sep 17 00:00:00 2001 From: Michael Pratt Date: Sun, 30 May 2021 02:02:47 -0400 Subject: [PATCH] ramips: mt7620: move mt7620_mdio_mode() to ethernet driver The function mt7620_mdio_mode is only called once and both the function and mdio_mode block have been named incorrectly, leading to confusion and useless commits. These lines in the mdio_mode block of mt7620_hw_init are only intended for boards with an external mt7530 switch. (see commit 194ca6127ee18cd3a95da4d03f02e43b5428c0bb) Therefore, move lines from mdio_mode to the place in soc_mt7620.c where the type of mt7530 switch is identified, and move lines from mt7620_mdio_mode to a main function. mt7620_mdio_mode was called from mt7620_gsw_init where the priv struct is available, so the lines must stay in mt7620_gsw_init function. In order to keep things as simple as possible, keep the DTS property related function calls together, by moving them from mt7620_gsw_probe to init. Remove the now useless DTS properties and extra phy nodes. Fixes: 5a6229a93df8 ("ramips: remove superfluous & confusing DT binding") Fixes: b85fe43ec8c4 ("ramips: mt7620: add force use of mdio-mode") Signed-off-by: Michael Pratt --- .../ramips/dts/mt7620a_edimax_ew-747x.dtsi | 2 - .../ramips/dts/mt7620a_engenius_esr600.dts | 1 - .../ramips/dts/mt7620a_lava_lr-25g001.dts | 23 +----- .../drivers/net/ethernet/ralink/gsw_mt7620.c | 71 ++++++------------- .../drivers/net/ethernet/ralink/soc_mt7620.c | 15 ++++ 5 files changed, 38 insertions(+), 74 deletions(-) diff --git a/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi b/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi index 5cb8451547..6060fd99a6 100644 --- a/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi +++ b/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi @@ -155,8 +155,6 @@ mtd-mac-address = <&factory 0x4>; - mediatek,mdio-mode = <1>; - phy-reset-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>; phy-reset-duration = <30>; diff --git a/target/linux/ramips/dts/mt7620a_engenius_esr600.dts b/target/linux/ramips/dts/mt7620a_engenius_esr600.dts index 2f0f9b256e..ea895ac6ea 100644 --- a/target/linux/ramips/dts/mt7620a_engenius_esr600.dts +++ b/target/linux/ramips/dts/mt7620a_engenius_esr600.dts @@ -144,7 +144,6 @@ mdio-bus { status = "okay"; - mediatek,mdio-mode; ethernet-phy@0 { reg = <0>; diff --git a/target/linux/ramips/dts/mt7620a_lava_lr-25g001.dts b/target/linux/ramips/dts/mt7620a_lava_lr-25g001.dts index ee845c7b5e..41d69d009b 100644 --- a/target/linux/ramips/dts/mt7620a_lava_lr-25g001.dts +++ b/target/linux/ramips/dts/mt7620a_lava_lr-25g001.dts @@ -115,9 +115,8 @@ mdio-bus { status = "okay"; - mediatek,mdio-mode = <1>; - phy0: ethernet-phy@0 { + ethernet-phy@0 { reg = <0>; phy-mode = "rgmii"; qca,ar8327-initvals = < @@ -127,26 +126,6 @@ 0x94 0x00000000 /* PORT6_STATUS */ >; }; - - phy1: ethernet-phy@1 { - reg = <1>; - phy-mode = "rgmii"; - }; - - phy2: ethernet-phy@2 { - reg = <2>; - phy-mode = "rgmii"; - }; - - phy3: ethernet-phy@3 { - reg = <3>; - phy-mode = "rgmii"; - }; - - phy4: ethernet-phy@4 { - reg = <4>; - phy-mode = "rgmii"; - }; }; }; diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c index 54b8b204eb..67f70f286d 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c @@ -61,31 +61,7 @@ static irqreturn_t gsw_interrupt_mt7620(int irq, void *_priv) return IRQ_HANDLED; } -static int mt7620_mdio_mode(struct device_node *eth_node) -{ - struct device_node *phy_node, *mdiobus_node; - const __be32 *id; - int ret = 0; - - mdiobus_node = of_get_child_by_name(eth_node, "mdio-bus"); - - if (mdiobus_node) { - if (of_property_read_bool(mdiobus_node, "mediatek,mdio-mode")) - ret = 1; - - for_each_child_of_node(mdiobus_node, phy_node) { - id = of_get_property(phy_node, "reg", NULL); - if (id && (be32_to_cpu(*id) == 0x1f)) - ret = 1; - } - - of_node_put(mdiobus_node); - } - - return ret; -} - -static void mt7620_hw_init(struct mt7620_gsw *gsw, int mdio_mode) +static void mt7620_hw_init(struct mt7620_gsw *gsw) { u32 i; u32 val; @@ -97,20 +73,6 @@ static void mt7620_hw_init(struct mt7620_gsw *gsw, int mdio_mode) /* Enable MIB stats */ mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_MIB_CNT_EN) | (1 << 1), GSW_REG_MIB_CNT_EN); - if (mdio_mode) { - /* set MT7530 central align */ - val = mt7530_mdio_r32(gsw, 0x7830); - val &= ~BIT(0); - val |= BIT(1); - mt7530_mdio_w32(gsw, 0x7830, val); - - val = mt7530_mdio_r32(gsw, 0x7a40); - val &= ~BIT(30); - mt7530_mdio_w32(gsw, 0x7a40, val); - - mt7530_mdio_w32(gsw, 0x7a78, 0x855); - } - if (gsw->ephy_base) { mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_GPC1) | (gsw->ephy_base << 16), @@ -215,9 +177,13 @@ MODULE_DEVICE_TABLE(of, mediatek_gsw_match); int mtk_gsw_init(struct fe_priv *priv) { + struct device_node *eth_node = priv->dev->of_node; + struct device_node *phy_node, *mdiobus_node; struct device_node *np = priv->switch_np; struct platform_device *pdev = of_find_device_by_node(np); struct mt7620_gsw *gsw; + const __be32 *id; + u8 val; if (!pdev) return -ENODEV; @@ -228,7 +194,23 @@ int mtk_gsw_init(struct fe_priv *priv) gsw = platform_get_drvdata(pdev); priv->soc->swpriv = gsw; - mt7620_hw_init(gsw, mt7620_mdio_mode(priv->dev->of_node)); + mdiobus_node = of_get_child_by_name(eth_node, "mdio-bus"); + if (mdiobus_node) { + for_each_child_of_node(mdiobus_node, phy_node) { + id = of_get_property(phy_node, "reg", NULL); + if (id && (be32_to_cpu(*id) == 0x1f)) + of_node_put(mdiobus_node); + } + } + + gsw->port4_ephy = !of_property_read_bool(np, "mediatek,port4-gmac"); + + if (of_property_read_u8(np, "mediatek,ephy-base", &val) == 0) + gsw->ephy_base = val; + else + gsw->ephy_base = 0; + + mt7620_hw_init(gsw); if (gsw->irq) { request_irq(gsw->irq, gsw_interrupt_mt7620, 0, @@ -243,8 +225,6 @@ static int mt7620_gsw_probe(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); struct mt7620_gsw *gsw; - struct device_node *np = pdev->dev.of_node; - u8 val; gsw = devm_kzalloc(&pdev->dev, sizeof(struct mt7620_gsw), GFP_KERNEL); if (!gsw) @@ -256,13 +236,6 @@ static int mt7620_gsw_probe(struct platform_device *pdev) gsw->dev = &pdev->dev; - gsw->port4_ephy = !of_property_read_bool(np, "mediatek,port4-gmac"); - - if (of_property_read_u8(np, "mediatek,ephy-base", &val) == 0) - gsw->ephy_base = val; - else - gsw->ephy_base = 0; - gsw->irq = platform_get_irq(pdev, 0); platform_set_drvdata(pdev, gsw); diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c index acd7350932..4d012afa14 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c @@ -82,11 +82,26 @@ static const u16 mt7620_reg_table[FE_REG_COUNT] = { static int mt7620_gsw_config(struct fe_priv *priv) { struct mt7620_gsw *gsw = (struct mt7620_gsw *) priv->soc->swpriv; + u32 val; /* is the mt7530 internal or external */ if (priv->mii_bus && mdiobus_get_phy(priv->mii_bus, 0x1f)) { mt7530_probe(priv->dev, gsw->base, NULL, 0); mt7530_probe(priv->dev, NULL, priv->mii_bus, 1); + + /* magic values from original SDK */ + val = mt7530_mdio_r32(gsw, 0x7830); + val &= ~BIT(0); + val |= BIT(1); + mt7530_mdio_w32(gsw, 0x7830, val); + + val = mt7530_mdio_r32(gsw, 0x7a40); + val &= ~BIT(30); + mt7530_mdio_w32(gsw, 0x7a40, val); + + mt7530_mdio_w32(gsw, 0x7a78, 0x855); + + pr_info("mt7530: mdio central align\n"); } else { mt7530_probe(priv->dev, gsw->base, NULL, 1); } -- 2.30.2