1 // SPDX-License-Identifier: GPL-2.0+
5 #include <linux/clk.h>
10 #include <linux/phy/phy.h>
35 	struct phy *phy;  member
36 	struct clk *clk;  member
41 static int imx8mq_usb_phy_init(struct phy *phy)  in imx8mq_usb_phy_init()  argument
43 	struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);  in imx8mq_usb_phy_init()
46 	value = readl(imx_phy->base + PHY_CTRL1);  in imx8mq_usb_phy_init()
50 	writel(value, imx_phy->base + PHY_CTRL1);  in imx8mq_usb_phy_init()
52 	value = readl(imx_phy->base + PHY_CTRL0);  in imx8mq_usb_phy_init()
54 	writel(value, imx_phy->base + PHY_CTRL0);  in imx8mq_usb_phy_init()
56 	value = readl(imx_phy->base + PHY_CTRL2);  in imx8mq_usb_phy_init()
58 	writel(value, imx_phy->base + PHY_CTRL2);  in imx8mq_usb_phy_init()
60 	value = readl(imx_phy->base + PHY_CTRL1);  in imx8mq_usb_phy_init()
62 	writel(value, imx_phy->base + PHY_CTRL1);  in imx8mq_usb_phy_init()
67 static int imx8mp_usb_phy_init(struct phy *phy)  in imx8mp_usb_phy_init()  argument
69 	struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);  in imx8mp_usb_phy_init()
72 	/* USB3.0 PHY signal fsel for 24M ref */  in imx8mp_usb_phy_init()
73 	value = readl(imx_phy->base + PHY_CTRL0);  in imx8mp_usb_phy_init()
76 	writel(value, imx_phy->base + PHY_CTRL0);  in imx8mp_usb_phy_init()
79 	value = readl(imx_phy->base + PHY_CTRL6);  in imx8mp_usb_phy_init()
81 	writel(value, imx_phy->base + PHY_CTRL6);  in imx8mp_usb_phy_init()
83 	value = readl(imx_phy->base + PHY_CTRL1);  in imx8mp_usb_phy_init()
86 	writel(value, imx_phy->base + PHY_CTRL1);  in imx8mp_usb_phy_init()
88 	value = readl(imx_phy->base + PHY_CTRL0);  in imx8mp_usb_phy_init()
90 	writel(value, imx_phy->base + PHY_CTRL0);  in imx8mp_usb_phy_init()
92 	value = readl(imx_phy->base + PHY_CTRL2);  in imx8mp_usb_phy_init()
94 	writel(value, imx_phy->base + PHY_CTRL2);  in imx8mp_usb_phy_init()
98 	value = readl(imx_phy->base + PHY_CTRL1);  in imx8mp_usb_phy_init()
100 	writel(value, imx_phy->base + PHY_CTRL1);  in imx8mp_usb_phy_init()
105 static int imx8mq_phy_power_on(struct phy *phy)  in imx8mq_phy_power_on()  argument
107 	struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);  in imx8mq_phy_power_on()
110 	ret = regulator_enable(imx_phy->vbus);  in imx8mq_phy_power_on()
114 	return clk_prepare_enable(imx_phy->clk);  in imx8mq_phy_power_on()
117 static int imx8mq_phy_power_off(struct phy *phy)  in imx8mq_phy_power_off()  argument
119 	struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);  in imx8mq_phy_power_off()
121 	clk_disable_unprepare(imx_phy->clk);  in imx8mq_phy_power_off()
122 	regulator_disable(imx_phy->vbus);  in imx8mq_phy_power_off()
142 	{.compatible = "fsl,imx8mq-usb-phy",
144 	{.compatible = "fsl,imx8mp-usb-phy",
153 	struct device *dev = &pdev->dev;  in imx8mq_usb_phy_probe()
159 		return -ENOMEM;  in imx8mq_usb_phy_probe()
161 	imx_phy->clk = devm_clk_get(dev, "phy");  in imx8mq_usb_phy_probe()
162 	if (IS_ERR(imx_phy->clk)) {  in imx8mq_usb_phy_probe()
163 		dev_err(dev, "failed to get imx8mq usb phy clock\n");  in imx8mq_usb_phy_probe()
164 		return PTR_ERR(imx_phy->clk);  in imx8mq_usb_phy_probe()
167 	imx_phy->base = devm_platform_ioremap_resource(pdev, 0);  in imx8mq_usb_phy_probe()
168 	if (IS_ERR(imx_phy->base))  in imx8mq_usb_phy_probe()
169 		return PTR_ERR(imx_phy->base);  in imx8mq_usb_phy_probe()
173 		return -EINVAL;  in imx8mq_usb_phy_probe()
175 	imx_phy->phy = devm_phy_create(dev, NULL, phy_ops);  in imx8mq_usb_phy_probe()
176 	if (IS_ERR(imx_phy->phy))  in imx8mq_usb_phy_probe()
177 		return PTR_ERR(imx_phy->phy);  in imx8mq_usb_phy_probe()
179 	imx_phy->vbus = devm_regulator_get(dev, "vbus");  in imx8mq_usb_phy_probe()
180 	if (IS_ERR(imx_phy->vbus))  in imx8mq_usb_phy_probe()
181 		return PTR_ERR(imx_phy->vbus);  in imx8mq_usb_phy_probe()
183 	phy_set_drvdata(imx_phy->phy, imx_phy);  in imx8mq_usb_phy_probe()
193 		.name	= "imx8mq-usb-phy",
199 MODULE_DESCRIPTION("FSL IMX8MQ USB PHY driver");