From: Daniel Golle Date: Fri, 8 Dec 2023 01:04:39 +0000 (+0000) Subject: mediatek: add patch for xsphy driver to support pcie2 on MT7988 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6d76f1c73368e176bad070e489eefe2d1c75bcc4;p=openwrt%2Fstaging%2Frmilecki.git mediatek: add patch for xsphy driver to support pcie2 on MT7988 Import patch from MediaTek SDK which allows using the third PCIe host controller of the MT7988 SoC. Signed-off-by: Daniel Golle --- diff --git a/target/linux/mediatek/patches-6.1/615-phy-phy-mtk-xsphy-support-type-switch-by-pericfg.patch b/target/linux/mediatek/patches-6.1/615-phy-phy-mtk-xsphy-support-type-switch-by-pericfg.patch new file mode 100644 index 00000000000..a597f70caa5 --- /dev/null +++ b/target/linux/mediatek/patches-6.1/615-phy-phy-mtk-xsphy-support-type-switch-by-pericfg.patch @@ -0,0 +1,167 @@ +From 50cefacc6c001eea1d9b1c78ba27304566f304f1 Mon Sep 17 00:00:00 2001 +From: Daniel Golle +Date: Fri, 2 Jun 2023 13:06:26 +0800 +Subject: [PATCH] phy: mediatek: xsphy: support type switch by pericfg + +Patch from Sam Shih found in MediaTek SDK +released under GPL. + +Get syscon and use it to set the PHY type. +Extend support to PCIe and SGMII mode in addition to USB2 and USB3. + +Signed-off-by: Daniel Golle +--- + drivers/phy/mediatek/phy-mtk-xsphy.c | 81 +++++++++++++++++++++++++++- + 1 file changed, 80 insertions(+), 1 deletion(-) + +--- a/drivers/phy/mediatek/phy-mtk-xsphy.c ++++ b/drivers/phy/mediatek/phy-mtk-xsphy.c +@@ -11,10 +11,12 @@ + #include + #include + #include ++#include + #include + #include + #include + #include ++#include + + #include "phy-mtk-io.h" + +@@ -81,12 +83,22 @@ + #define XSP_SR_COEF_DIVISOR 1000 + #define XSP_FM_DET_CYCLE_CNT 1024 + ++/* PHY switch between pcie/usb3/sgmii */ ++#define USB_PHY_SWITCH_CTRL 0x0 ++#define RG_PHY_SW_TYPE GENMASK(3, 0) ++#define RG_PHY_SW_PCIE 0x0 ++#define RG_PHY_SW_USB3 0x1 ++#define RG_PHY_SW_SGMII 0x2 ++ + struct xsphy_instance { + struct phy *phy; + void __iomem *port_base; + struct clk *ref_clk; /* reference clock of anolog phy */ + u32 index; + u32 type; ++ struct regmap *type_sw; ++ u32 type_sw_reg; ++ u32 type_sw_index; + /* only for HQA test */ + int efuse_intr; + int efuse_tx_imp; +@@ -259,6 +271,10 @@ static void phy_parse_property(struct mt + inst->efuse_intr, inst->efuse_tx_imp, + inst->efuse_rx_imp); + break; ++ case PHY_TYPE_PCIE: ++ case PHY_TYPE_SGMII: ++ /* nothing to do */ ++ break; + default: + dev_err(xsphy->dev, "incompatible phy type\n"); + return; +@@ -305,6 +321,62 @@ static void u3_phy_props_set(struct mtk_ + RG_XTP_LN0_RX_IMPSEL, inst->efuse_rx_imp); + } + ++/* type switch for usb3/pcie/sgmii */ ++static int phy_type_syscon_get(struct xsphy_instance *instance, ++ struct device_node *dn) ++{ ++ struct of_phandle_args args; ++ int ret; ++ ++ /* type switch function is optional */ ++ if (!of_property_read_bool(dn, "mediatek,syscon-type")) ++ return 0; ++ ++ ret = of_parse_phandle_with_fixed_args(dn, "mediatek,syscon-type", ++ 2, 0, &args); ++ if (ret) ++ return ret; ++ ++ instance->type_sw_reg = args.args[0]; ++ instance->type_sw_index = args.args[1] & 0x3; /* <=3 */ ++ instance->type_sw = syscon_node_to_regmap(args.np); ++ of_node_put(args.np); ++ dev_info(&instance->phy->dev, "type_sw - reg %#x, index %d\n", ++ instance->type_sw_reg, instance->type_sw_index); ++ ++ return PTR_ERR_OR_ZERO(instance->type_sw); ++} ++ ++static int phy_type_set(struct xsphy_instance *instance) ++{ ++ int type; ++ u32 offset; ++ ++ if (!instance->type_sw) ++ return 0; ++ ++ switch (instance->type) { ++ case PHY_TYPE_USB3: ++ type = RG_PHY_SW_USB3; ++ break; ++ case PHY_TYPE_PCIE: ++ type = RG_PHY_SW_PCIE; ++ break; ++ case PHY_TYPE_SGMII: ++ type = RG_PHY_SW_SGMII; ++ break; ++ case PHY_TYPE_USB2: ++ default: ++ return 0; ++ } ++ ++ offset = instance->type_sw_index * BITS_PER_BYTE; ++ regmap_update_bits(instance->type_sw, instance->type_sw_reg, ++ RG_PHY_SW_TYPE << offset, type << offset); ++ ++ return 0; ++} ++ + static int mtk_phy_init(struct phy *phy) + { + struct xsphy_instance *inst = phy_get_drvdata(phy); +@@ -325,6 +397,10 @@ static int mtk_phy_init(struct phy *phy) + case PHY_TYPE_USB3: + u3_phy_props_set(xsphy, inst); + break; ++ case PHY_TYPE_PCIE: ++ case PHY_TYPE_SGMII: ++ /* nothing to do, only used to set type */ ++ break; + default: + dev_err(xsphy->dev, "incompatible phy type\n"); + clk_disable_unprepare(inst->ref_clk); +@@ -403,12 +479,15 @@ static struct phy *mtk_phy_xlate(struct + + inst->type = args->args[0]; + if (!(inst->type == PHY_TYPE_USB2 || +- inst->type == PHY_TYPE_USB3)) { ++ inst->type == PHY_TYPE_USB3 || ++ inst->type == PHY_TYPE_PCIE || ++ inst->type == PHY_TYPE_SGMII)) { + dev_err(dev, "unsupported phy type: %d\n", inst->type); + return ERR_PTR(-EINVAL); + } + + phy_parse_property(xsphy, inst); ++ phy_type_set(inst); + + return inst->phy; + } +@@ -515,6 +594,10 @@ static int mtk_xsphy_probe(struct platfo + retval = PTR_ERR(inst->ref_clk); + goto put_child; + } ++ ++ retval = phy_type_syscon_get(inst, child_np); ++ if (retval) ++ goto put_child; + } + + provider = devm_of_phy_provider_register(dev, mtk_phy_xlate);