From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition  size

---
 kernel/drivers/phy/ti/phy-omap-usb2.c |  260 +++++++++++++++++++++++++++++++++++----------------
 1 files changed, 178 insertions(+), 82 deletions(-)

diff --git a/kernel/drivers/phy/ti/phy-omap-usb2.c b/kernel/drivers/phy/ti/phy-omap-usb2.c
index fe909fd..f77ac04 100644
--- a/kernel/drivers/phy/ti/phy-omap-usb2.c
+++ b/kernel/drivers/phy/ti/phy-omap-usb2.c
@@ -1,43 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * omap-usb2.c - USB PHY, talking to musb controller in OMAP.
+ * omap-usb2.c - USB PHY, talking to USB controller on TI SoCs.
  *
- * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
+ * Copyright (C) 2012-2020 Texas Instruments Incorporated - http://www.ti.com
  * Author: Kishon Vijay Abraham I <kishon@ti.com>
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/io.h>
-#include <linux/phy/omap_usb.h>
-#include <linux/usb/phy_companion.h>
 #include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/pm_runtime.h>
 #include <linux/delay.h>
-#include <linux/phy/omap_control_phy.h>
-#include <linux/phy/phy.h>
+#include <linux/err.h>
+#include <linux/io.h>
 #include <linux/mfd/syscon.h>
-#include <linux/regmap.h>
+#include <linux/module.h>
+#include <linux/of.h>
 #include <linux/of_platform.h>
+#include <linux/phy/omap_control_phy.h>
+#include <linux/phy/omap_usb.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+#include <linux/usb/phy_companion.h>
 
-#define USB2PHY_DISCON_BYP_LATCH (1 << 31)
-#define USB2PHY_ANA_CONFIG1 0x4c
+#define USB2PHY_ANA_CONFIG1		0x4c
+#define USB2PHY_DISCON_BYP_LATCH	BIT(31)
+
+#define USB2PHY_CHRG_DET			0x14
+#define USB2PHY_CHRG_DET_USE_CHG_DET_REG	BIT(29)
+#define USB2PHY_CHRG_DET_DIS_CHG_DET		BIT(28)
+
+/* SoC Specific USB2_OTG register definitions */
+#define AM654_USB2_OTG_PD		BIT(8)
+#define AM654_USB2_VBUS_DET_EN		BIT(5)
+#define AM654_USB2_VBUSVALID_DET_EN	BIT(4)
+
+#define OMAP_DEV_PHY_PD		BIT(0)
+#define OMAP_USB2_PHY_PD	BIT(28)
+
+#define AM437X_USB2_PHY_PD		BIT(0)
+#define AM437X_USB2_OTG_PD		BIT(1)
+#define AM437X_USB2_OTGVDET_EN		BIT(19)
+#define AM437X_USB2_OTGSESSEND_EN	BIT(20)
+
+/* Driver Flags */
+#define OMAP_USB2_HAS_START_SRP			BIT(0)
+#define OMAP_USB2_HAS_SET_VBUS			BIT(1)
+#define OMAP_USB2_CALIBRATE_FALSE_DISCONNECT	BIT(2)
+#define OMAP_USB2_DISABLE_CHRG_DET		BIT(3)
+
+struct omap_usb {
+	struct usb_phy		phy;
+	struct phy_companion	*comparator;
+	void __iomem		*pll_ctrl_base;
+	void __iomem		*phy_base;
+	struct device		*dev;
+	struct device		*control_dev;
+	struct clk		*wkupclk;
+	struct clk		*optclk;
+	u8			flags;
+	struct regmap		*syscon_phy_power; /* ctrl. reg. acces */
+	unsigned int		power_reg; /* power reg. index within syscon */
+	u32			mask;
+	u32			power_on;
+	u32			power_off;
+};
+
+#define	phy_to_omapusb(x)	container_of((x), struct omap_usb, phy)
+
+struct usb_phy_data {
+	const char *label;
+	u8 flags;
+	u32 mask;
+	u32 power_on;
+	u32 power_off;
+};
+
+static inline u32 omap_usb_readl(void __iomem *addr, unsigned int offset)
+{
+	return __raw_readl(addr + offset);
+}
+
+static inline void omap_usb_writel(void __iomem *addr, unsigned int offset,
+				   u32 data)
+{
+	__raw_writel(data, addr + offset);
+}
 
 /**
- * omap_usb2_set_comparator - links the comparator present in the sytem with
+ * omap_usb2_set_comparator - links the comparator present in the system with
  *	this phy
  * @comparator - the companion phy(comparator) for this phy
  *
@@ -90,7 +142,7 @@
 }
 
 static int omap_usb_set_peripheral(struct usb_otg *otg,
-		struct usb_gadget *gadget)
+				   struct usb_gadget *gadget)
 {
 	otg->gadget = gadget;
 	if (!gadget)
@@ -135,9 +187,9 @@
 
 static int omap_usb2_disable_clocks(struct omap_usb *phy)
 {
-	clk_disable(phy->wkupclk);
+	clk_disable_unprepare(phy->wkupclk);
 	if (!IS_ERR(phy->optclk))
-		clk_disable(phy->optclk);
+		clk_disable_unprepare(phy->optclk);
 
 	return 0;
 }
@@ -146,14 +198,14 @@
 {
 	int ret;
 
-	ret = clk_enable(phy->wkupclk);
+	ret = clk_prepare_enable(phy->wkupclk);
 	if (ret < 0) {
 		dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
 		goto err0;
 	}
 
 	if (!IS_ERR(phy->optclk)) {
-		ret = clk_enable(phy->optclk);
+		ret = clk_prepare_enable(phy->optclk);
 		if (ret < 0) {
 			dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
 			goto err1;
@@ -163,7 +215,7 @@
 	return 0;
 
 err1:
-	clk_disable(phy->wkupclk);
+	clk_disable_unprepare(phy->wkupclk);
 
 err0:
 	return ret;
@@ -188,6 +240,13 @@
 		val = omap_usb_readl(phy->phy_base, USB2PHY_ANA_CONFIG1);
 		val |= USB2PHY_DISCON_BYP_LATCH;
 		omap_usb_writel(phy->phy_base, USB2PHY_ANA_CONFIG1, val);
+	}
+
+	if (phy->flags & OMAP_USB2_DISABLE_CHRG_DET) {
+		val = omap_usb_readl(phy->phy_base, USB2PHY_CHRG_DET);
+		val |= USB2PHY_CHRG_DET_USE_CHG_DET_REG |
+		       USB2PHY_CHRG_DET_DIS_CHG_DET;
+		omap_usb_writel(phy->phy_base, USB2PHY_CHRG_DET, val);
 	}
 
 	return 0;
@@ -245,6 +304,15 @@
 	.power_off = AM437X_USB2_PHY_PD | AM437X_USB2_OTG_PD,
 };
 
+static const struct usb_phy_data am654_usb2_data = {
+	.label = "am654_usb2",
+	.flags = OMAP_USB2_CALIBRATE_FALSE_DISCONNECT,
+	.mask = AM654_USB2_OTG_PD | AM654_USB2_VBUS_DET_EN |
+		AM654_USB2_VBUSVALID_DET_EN,
+	.power_on = AM654_USB2_VBUS_DET_EN | AM654_USB2_VBUSVALID_DET_EN,
+	.power_off = AM654_USB2_OTG_PD,
+};
+
 static const struct of_device_id omap_usb2_id_table[] = {
 	{
 		.compatible = "ti,omap-usb2",
@@ -266,9 +334,33 @@
 		.compatible = "ti,am437x-usb2",
 		.data = &am437x_usb2_data,
 	},
+	{
+		.compatible = "ti,am654-usb2",
+		.data = &am654_usb2_data,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, omap_usb2_id_table);
+
+static void omap_usb2_init_errata(struct omap_usb *phy)
+{
+	static const struct soc_device_attribute am65x_sr10_soc_devices[] = {
+		{ .family = "AM65X", .revision = "SR1.0" },
+		{ /* sentinel */ }
+	};
+
+	/*
+	 * Errata i2075: USB2PHY: USB2PHY Charger Detect is Enabled by
+	 * Default Without VBUS Presence.
+	 *
+	 * AM654x SR1.0 has a silicon bug due to which D+ is pulled high after
+	 * POR, which could cause enumeration failure with some USB hubs.
+	 * Disabling the USB2_PHY Charger Detect function will put D+
+	 * into the normal state.
+	 */
+	if (soc_device_match(am65x_sr10_soc_devices))
+		phy->flags |= OMAP_USB2_DISABLE_CHRG_DET;
+}
 
 static int omap_usb2_probe(struct platform_device *pdev)
 {
@@ -307,17 +399,17 @@
 	phy->mask		= phy_data->mask;
 	phy->power_on		= phy_data->power_on;
 	phy->power_off		= phy_data->power_off;
+	phy->flags		= phy_data->flags;
 
-	if (phy_data->flags & OMAP_USB2_CALIBRATE_FALSE_DISCONNECT) {
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		phy->phy_base = devm_ioremap_resource(&pdev->dev, res);
-		if (IS_ERR(phy->phy_base))
-			return PTR_ERR(phy->phy_base);
-		phy->flags |= OMAP_USB2_CALIBRATE_FALSE_DISCONNECT;
-	}
+	omap_usb2_init_errata(phy);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	phy->phy_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(phy->phy_base))
+		return PTR_ERR(phy->phy_base);
 
 	phy->syscon_phy_power = syscon_regmap_lookup_by_phandle(node,
-							"syscon-phy-power");
+								"syscon-phy-power");
 	if (IS_ERR(phy->syscon_phy_power)) {
 		dev_dbg(&pdev->dev,
 			"can't get syscon-phy-power, using control device\n");
@@ -346,13 +438,51 @@
 		}
 	}
 
-	otg->set_host		= omap_usb_set_host;
-	otg->set_peripheral	= omap_usb_set_peripheral;
+	phy->wkupclk = devm_clk_get(phy->dev, "wkupclk");
+	if (IS_ERR(phy->wkupclk)) {
+		if (PTR_ERR(phy->wkupclk) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		dev_warn(&pdev->dev, "unable to get wkupclk %ld, trying old name\n",
+			 PTR_ERR(phy->wkupclk));
+		phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k");
+
+		if (IS_ERR(phy->wkupclk)) {
+			if (PTR_ERR(phy->wkupclk) != -EPROBE_DEFER)
+				dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n");
+			return PTR_ERR(phy->wkupclk);
+		}
+
+		dev_warn(&pdev->dev,
+			 "found usb_phy_cm_clk32k, please fix DTS\n");
+	}
+
+	phy->optclk = devm_clk_get(phy->dev, "refclk");
+	if (IS_ERR(phy->optclk)) {
+		if (PTR_ERR(phy->optclk) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		dev_dbg(&pdev->dev, "unable to get refclk, trying old name\n");
+		phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m");
+
+		if (IS_ERR(phy->optclk)) {
+			if (PTR_ERR(phy->optclk) != -EPROBE_DEFER) {
+				dev_dbg(&pdev->dev,
+					"unable to get usb_otg_ss_refclk960m\n");
+			}
+		} else {
+			dev_warn(&pdev->dev,
+				 "found usb_otg_ss_refclk960m, please fix DTS\n");
+		}
+	}
+
+	otg->set_host = omap_usb_set_host;
+	otg->set_peripheral = omap_usb_set_peripheral;
 	if (phy_data->flags & OMAP_USB2_HAS_SET_VBUS)
-		otg->set_vbus		= omap_usb_set_vbus;
+		otg->set_vbus = omap_usb_set_vbus;
 	if (phy_data->flags & OMAP_USB2_HAS_START_SRP)
-		otg->start_srp		= omap_usb_start_srp;
-	otg->usb_phy		= &phy->phy;
+		otg->start_srp = omap_usb_start_srp;
+	otg->usb_phy = &phy->phy;
 
 	platform_set_drvdata(pdev, phy);
 	pm_runtime_enable(phy->dev);
@@ -367,42 +497,11 @@
 	omap_usb_power_off(generic_phy);
 
 	phy_provider = devm_of_phy_provider_register(phy->dev,
-			of_phy_simple_xlate);
+						     of_phy_simple_xlate);
 	if (IS_ERR(phy_provider)) {
 		pm_runtime_disable(phy->dev);
 		return PTR_ERR(phy_provider);
 	}
-
-	phy->wkupclk = devm_clk_get(phy->dev, "wkupclk");
-	if (IS_ERR(phy->wkupclk)) {
-		dev_warn(&pdev->dev, "unable to get wkupclk, trying old name\n");
-		phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k");
-		if (IS_ERR(phy->wkupclk)) {
-			dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n");
-			pm_runtime_disable(phy->dev);
-			return PTR_ERR(phy->wkupclk);
-		} else {
-			dev_warn(&pdev->dev,
-				 "found usb_phy_cm_clk32k, please fix DTS\n");
-		}
-	}
-	clk_prepare(phy->wkupclk);
-
-	phy->optclk = devm_clk_get(phy->dev, "refclk");
-	if (IS_ERR(phy->optclk)) {
-		dev_dbg(&pdev->dev, "unable to get refclk, trying old name\n");
-		phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m");
-		if (IS_ERR(phy->optclk)) {
-			dev_dbg(&pdev->dev,
-				"unable to get usb_otg_ss_refclk960m\n");
-		} else {
-			dev_warn(&pdev->dev,
-				 "found usb_otg_ss_refclk960m, please fix DTS\n");
-		}
-	}
-
-	if (!IS_ERR(phy->optclk))
-		clk_prepare(phy->optclk);
 
 	usb_add_phy_dev(&phy->phy);
 
@@ -413,9 +512,6 @@
 {
 	struct omap_usb	*phy = platform_get_drvdata(pdev);
 
-	clk_unprepare(phy->wkupclk);
-	if (!IS_ERR(phy->optclk))
-		clk_unprepare(phy->optclk);
 	usb_remove_phy(&phy->phy);
 	pm_runtime_disable(phy->dev);
 

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