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 <[email protected]>
13  * Copyright (c) 2010-2015 Allwinner Technology Co., Ltd.
18 #include <linux/io.h>
23 #include <linux/reset.h>
44 #define SUNXI_TX_DEEMPH_3P5DB(n)	((n) << 19)  argument
46 #define SUNXI_TX_DEEMPH_6DB(n)		((n) << 13)  argument
48 #define SUNXI_TX_SWING_FULL(n)		((n) << 6)  argument
50 #define SUNXI_LOS_BIAS(n)		((n) << 3)  argument
52 #define SUNXI_TXVBOOSTLVL(n)		((n) << 0)  argument
58 	struct reset_control *reset;  member
66 	val = readl(phy->regs + SUNXI_PHY_EXTERNAL_CONTROL);  in sun50i_usb3_phy_open()
69 	writel(val, phy->regs + SUNXI_PHY_EXTERNAL_CONTROL);  in sun50i_usb3_phy_open()
71 	val = readl(phy->regs + SUNXI_PIPE_CLOCK_CONTROL);  in sun50i_usb3_phy_open()
73 	writel(val, phy->regs + SUNXI_PIPE_CLOCK_CONTROL);  in sun50i_usb3_phy_open()
75 	val = readl(phy->regs + SUNXI_ISCR);  in sun50i_usb3_phy_open()
77 	writel(val, phy->regs + SUNXI_ISCR);  in sun50i_usb3_phy_open()
84 	writel(0x0047fc87, phy->regs + SUNXI_PHY_TUNE_LOW);  in sun50i_usb3_phy_open()
86 	val = readl(phy->regs + SUNXI_PHY_TUNE_HIGH);  in sun50i_usb3_phy_open()
95 	writel(val, phy->regs + SUNXI_PHY_TUNE_HIGH);  in sun50i_usb3_phy_open()
103 	ret = clk_prepare_enable(phy->clk);  in sun50i_usb3_phy_init()
107 	ret = reset_control_deassert(phy->reset);  in sun50i_usb3_phy_init()
109 		clk_disable_unprepare(phy->clk);  in sun50i_usb3_phy_init()
121 	reset_control_assert(phy->reset);  in sun50i_usb3_phy_exit()
122 	clk_disable_unprepare(phy->clk);  in sun50i_usb3_phy_exit()
136 	struct device *dev = &pdev->dev;  in sun50i_usb3_phy_probe()
141 		return -ENOMEM;  in sun50i_usb3_phy_probe()
143 	phy->clk = devm_clk_get(dev, NULL);  in sun50i_usb3_phy_probe()
144 	if (IS_ERR(phy->clk)) {  in sun50i_usb3_phy_probe()
145 		if (PTR_ERR(phy->clk) != -EPROBE_DEFER)  in sun50i_usb3_phy_probe()
146 			dev_err(dev, "failed to get phy clock\n");  in sun50i_usb3_phy_probe()
147 		return PTR_ERR(phy->clk);  in sun50i_usb3_phy_probe()
150 	phy->reset = devm_reset_control_get(dev, NULL);  in sun50i_usb3_phy_probe()
151 	if (IS_ERR(phy->reset)) {  in sun50i_usb3_phy_probe()
152 		dev_err(dev, "failed to get reset control\n");  in sun50i_usb3_phy_probe()
153 		return PTR_ERR(phy->reset);  in sun50i_usb3_phy_probe()
156 	phy->regs = devm_platform_ioremap_resource(pdev, 0);  in sun50i_usb3_phy_probe()
157 	if (IS_ERR(phy->regs))  in sun50i_usb3_phy_probe()
158 		return PTR_ERR(phy->regs);  in sun50i_usb3_phy_probe()
160 	phy->phy = devm_phy_create(dev, NULL, &sun50i_usb3_phy_ops);  in sun50i_usb3_phy_probe()
161 	if (IS_ERR(phy->phy)) {  in sun50i_usb3_phy_probe()
162 		dev_err(dev, "failed to create PHY\n");  in sun50i_usb3_phy_probe()
163 		return PTR_ERR(phy->phy);  in sun50i_usb3_phy_probe()
166 	phy_set_drvdata(phy->phy, phy);  in sun50i_usb3_phy_probe()
173 	{ .compatible = "allwinner,sun50i-h6-usb3-phy" },
182 		.name  = "sun50i-usb3-phy",
188 MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");