1 // SPDX-License-Identifier: GPL-2.0+
5  * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
7  * Based on phy-sun9i-usb.c, which is:
9  * Copyright (C) 2014-2015 Chen-Yu Tsai <wens@csie.org>
13  * Copyright (c) 2010-2015 Allwinner Technology Co., Ltd.
18 #include <linux/io.h>
22 #include <linux/reset.h>
43 #define SUNXI_TX_DEEMPH_3P5DB(n)	((n) << 19)  argument
45 #define SUNXI_TX_DEEMPH_6DB(n)		((n) << 13)  argument
47 #define SUNXI_TX_SWING_FULL(n)		((n) << 6)  argument
49 #define SUNXI_LOS_BIAS(n)		((n) << 3)  argument
51 #define SUNXI_TXVBOOSTLVL(n)		((n) << 0)  argument
57 	struct reset_control *reset;  member
65 	val = readl(phy->regs + SUNXI_PHY_EXTERNAL_CONTROL);  in sun50i_usb3_phy_open()
68 	writel(val, phy->regs + SUNXI_PHY_EXTERNAL_CONTROL);  in sun50i_usb3_phy_open()
70 	val = readl(phy->regs + SUNXI_PIPE_CLOCK_CONTROL);  in sun50i_usb3_phy_open()
72 	writel(val, phy->regs + SUNXI_PIPE_CLOCK_CONTROL);  in sun50i_usb3_phy_open()
74 	val = readl(phy->regs + SUNXI_ISCR);  in sun50i_usb3_phy_open()
76 	writel(val, phy->regs + SUNXI_ISCR);  in sun50i_usb3_phy_open()
83 	writel(0x0047fc87, phy->regs + SUNXI_PHY_TUNE_LOW);  in sun50i_usb3_phy_open()
85 	val = readl(phy->regs + SUNXI_PHY_TUNE_HIGH);  in sun50i_usb3_phy_open()
94 	writel(val, phy->regs + SUNXI_PHY_TUNE_HIGH);  in sun50i_usb3_phy_open()
102 	ret = clk_prepare_enable(phy->clk);  in sun50i_usb3_phy_init()
106 	ret = reset_control_deassert(phy->reset);  in sun50i_usb3_phy_init()
108 		clk_disable_unprepare(phy->clk);  in sun50i_usb3_phy_init()
120 	reset_control_assert(phy->reset);  in sun50i_usb3_phy_exit()
121 	clk_disable_unprepare(phy->clk);  in sun50i_usb3_phy_exit()
135 	struct device *dev = &pdev->dev;  in sun50i_usb3_phy_probe()
140 		return -ENOMEM;  in sun50i_usb3_phy_probe()
142 	phy->clk = devm_clk_get(dev, NULL);  in sun50i_usb3_phy_probe()
143 	if (IS_ERR(phy->clk)) {  in sun50i_usb3_phy_probe()
144 		if (PTR_ERR(phy->clk) != -EPROBE_DEFER)  in sun50i_usb3_phy_probe()
145 			dev_err(dev, "failed to get phy clock\n");  in sun50i_usb3_phy_probe()
146 		return PTR_ERR(phy->clk);  in sun50i_usb3_phy_probe()
149 	phy->reset = devm_reset_control_get(dev, NULL);  in sun50i_usb3_phy_probe()
150 	if (IS_ERR(phy->reset)) {  in sun50i_usb3_phy_probe()
151 		dev_err(dev, "failed to get reset control\n");  in sun50i_usb3_phy_probe()
152 		return PTR_ERR(phy->reset);  in sun50i_usb3_phy_probe()
155 	phy->regs = devm_platform_ioremap_resource(pdev, 0);  in sun50i_usb3_phy_probe()
156 	if (IS_ERR(phy->regs))  in sun50i_usb3_phy_probe()
157 		return PTR_ERR(phy->regs);  in sun50i_usb3_phy_probe()
159 	phy->phy = devm_phy_create(dev, NULL, &sun50i_usb3_phy_ops);  in sun50i_usb3_phy_probe()
160 	if (IS_ERR(phy->phy)) {  in sun50i_usb3_phy_probe()
161 		dev_err(dev, "failed to create PHY\n");  in sun50i_usb3_phy_probe()
162 		return PTR_ERR(phy->phy);  in sun50i_usb3_phy_probe()
165 	phy_set_drvdata(phy->phy, phy);  in sun50i_usb3_phy_probe()
172 	{ .compatible = "allwinner,sun50i-h6-usb3-phy" },
181 		.name  = "sun50i-usb3-phy",
187 MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");