21.02/files/target/linux/mediatek/patches-5.4/999-2613-phy-phy-mtk-tphy-add-auto-load-valid-check-mechanism.patch

From 0e03f2c1ade35e8d40c87425414d0a6ccef0439c Mon Sep 17 00:00:00 2001
From: Sam Shih <sam.shih@mediatek.com>
Date: Fri, 2 Jun 2023 13:06:25 +0800
Subject: [PATCH] 
 [high-speed-io][999-2613-phy-phy-mtk-tphy-add-auto-load-valid-check-mechanism.patch]

---
 drivers/phy/mediatek/phy-mtk-tphy.c | 67 +++++++++++++++++++++++++++--
 1 file changed, 64 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
index 6c07885be..149464f37 100644
--- a/drivers/phy/mediatek/phy-mtk-tphy.c
+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
@@ -359,9 +359,13 @@ struct mtk_phy_instance {
 	};
 	struct clk *ref_clk;	/* reference clock of anolog phy */
 	u32 efuse_sw_en;
+	bool efuse_alv_en;
+	u32 efuse_autoloadvalid;
 	u32 efuse_intr;
 	u32 efuse_tx_imp;
 	u32 efuse_rx_imp;
+	bool efuse_alv_ln1_en;
+	u32 efuse_ln1_autoloadvalid;
 	u32 efuse_intr_ln1;
 	u32 efuse_tx_imp_ln1;
 	u32 efuse_rx_imp_ln1;
@@ -1060,6 +1064,7 @@ static int phy_efuse_get(struct mtk_tphy *tphy, struct mtk_phy_instance *instanc
 {
 	struct device *dev = &instance->phy->dev;
 	int ret = 0;
+	bool alv = false;
 
 	dev_err(dev, "try to get sw efuse\n");
 
@@ -1078,6 +1083,20 @@ static int phy_efuse_get(struct mtk_tphy *tphy, struct mtk_phy_instance *instanc
 
 	switch (instance->type) {
 	case PHY_TYPE_USB2:
+		alv = of_property_read_bool(dev->of_node, "auto_load_valid");
+		if (alv) {
+			instance->efuse_alv_en = alv;
+			ret = nvmem_cell_read_variable_le_u32(dev, "auto_load_valid",
+							&instance->efuse_autoloadvalid);
+			if (ret) {
+				dev_err(dev, "fail to get u2 alv efuse, %d\n", ret);
+				break;
+			}
+			dev_info(dev,
+				"u2 auto load valid efuse: ENABLE with value: %u\n",
+				instance->efuse_autoloadvalid);
+		}
+
 		ret = nvmem_cell_read_variable_le_u32(dev, "intr", &instance->efuse_intr);
 		if (ret) {
 			dev_err(dev, "fail to get u2 intr efuse, %d\n", ret);
@@ -1095,6 +1114,20 @@ static int phy_efuse_get(struct mtk_tphy *tphy, struct mtk_phy_instance *instanc
 		break;
 	case PHY_TYPE_USB3:
 	case PHY_TYPE_PCIE:
+		alv = of_property_read_bool(dev->of_node, "auto_load_valid");
+		if (alv) {
+			instance->efuse_alv_en = alv;
+			ret = nvmem_cell_read_variable_le_u32(dev, "auto_load_valid",
+							&instance->efuse_autoloadvalid);
+			if (ret) {
+				dev_err(dev, "fail to get u3(pcei) alv efuse, %d\n", ret);
+				break;
+			}
+			dev_info(dev,
+				"u3 auto load valid efuse: ENABLE with value: %u\n",
+				instance->efuse_autoloadvalid);
+		}
+
 		ret = nvmem_cell_read_variable_le_u32(dev, "intr", &instance->efuse_intr);
 		if (ret) {
 			dev_err(dev, "fail to get u3 intr efuse, %d\n", ret);
@@ -1129,6 +1162,20 @@ static int phy_efuse_get(struct mtk_tphy *tphy, struct mtk_phy_instance *instanc
 		if (tphy->pdata->version != MTK_PHY_V4)
 			break;
 
+		alv = of_property_read_bool(dev->of_node, "auto_load_valid_ln1");
+		if (alv) {
+			instance->efuse_alv_ln1_en = alv;
+			ret = nvmem_cell_read_variable_le_u32(dev, "auto_load_valid_ln1",
+							&instance->efuse_ln1_autoloadvalid);
+			if (ret) {
+				dev_err(dev, "fail to get pcie auto_load_valid efuse, %d\n", ret);
+				break;
+			}
+			dev_info(dev,
+				"pcie auto load valid efuse: ENABLE with value: %u\n",
+				instance->efuse_ln1_autoloadvalid);
+		}
+
 		ret = nvmem_cell_read_variable_le_u32(dev, "intr_ln1", &instance->efuse_intr_ln1);
 		if (ret) {
 			dev_err(dev, "fail to get u3 lane1 intr efuse, %d\n", ret);
@@ -1180,6 +1227,10 @@ static void phy_efuse_set(struct mtk_phy_instance *instance)
 
 	switch (instance->type) {
 	case PHY_TYPE_USB2:
+		if (instance->efuse_alv_en &&
+		    instance->efuse_autoloadvalid == 1)
+			break;
+
 		tmp = readl(u2_banks->misc + U3P_MISC_REG1);
 		tmp |= MR1_EFUSE_AUTO_LOAD_DIS;
 		writel(tmp, u2_banks->misc + U3P_MISC_REG1);
@@ -1192,6 +1243,10 @@ static void phy_efuse_set(struct mtk_phy_instance *instance)
 
 		break;
 	case PHY_TYPE_USB3:
+		if (instance->efuse_alv_en &&
+		    instance->efuse_autoloadvalid == 1)
+			break;
+
 		tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RSV);
 		tmp |= P3D_RG_EFUSE_AUTO_LOAD_DIS;
 		writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RSV);
@@ -1218,6 +1273,10 @@ static void phy_efuse_set(struct mtk_phy_instance *instance)
 
 		break;
 	case PHY_TYPE_PCIE:
+		if (instance->efuse_alv_en &&
+		    instance->efuse_autoloadvalid == 1)
+			break;
+
 		tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RSV);
 		tmp |= P3D_RG_EFUSE_AUTO_LOAD_DIS;
 		writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RSV);
@@ -1242,9 +1301,11 @@ static void phy_efuse_set(struct mtk_phy_instance *instance)
 			__func__, instance->efuse_tx_imp,
 			instance->efuse_rx_imp, instance->efuse_intr);
 
-		if (!instance->efuse_intr_ln1 &&
-		    !instance->efuse_rx_imp_ln1 &&
-		    !instance->efuse_tx_imp_ln1)
+		if ((!instance->efuse_intr_ln1 &&
+		     !instance->efuse_rx_imp_ln1 &&
+		     !instance->efuse_tx_imp_ln1) ||
+		    (instance->efuse_alv_ln1_en &&
+		     instance->efuse_ln1_autoloadvalid == 1))
 			break;
 
 		tmp = readl(u3_banks->phyd + SSUSB_LN1_OFFSET + U3P_U3_PHYD_RSV);
-- 
2.34.1