1 // SPDX-License-Identifier: GPL-2.0
3  * Ingenic SoCs USB PHY driver
14 #include <linux/phy/phy.h>
86 	void (*usb_phy_init)(struct phy *phy);
92 	struct phy *phy;  member
98 static int ingenic_usb_phy_init(struct phy *phy)  in ingenic_usb_phy_init()  argument
100 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_init()
104 	err = clk_prepare_enable(priv->clk);  in ingenic_usb_phy_init()
106 		dev_err(&phy->dev, "Unable to start clock: %d\n", err);  in ingenic_usb_phy_init()
110 	priv->soc_info->usb_phy_init(phy);  in ingenic_usb_phy_init()
112 	/* Wait for PHY to reset */  in ingenic_usb_phy_init()
114 	reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_init()
115 	writel(reg & ~USBPCR_POR, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_init()
121 static int ingenic_usb_phy_exit(struct phy *phy)  in ingenic_usb_phy_exit()  argument
123 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_exit()
125 	clk_disable_unprepare(priv->clk);  in ingenic_usb_phy_exit()
126 	regulator_disable(priv->vcc_supply);  in ingenic_usb_phy_exit()
131 static int ingenic_usb_phy_power_on(struct phy *phy)  in ingenic_usb_phy_power_on()  argument
133 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_power_on()
136 	err = regulator_enable(priv->vcc_supply);  in ingenic_usb_phy_power_on()
138 		dev_err(&phy->dev, "Unable to enable VCC: %d\n", err);  in ingenic_usb_phy_power_on()
145 static int ingenic_usb_phy_power_off(struct phy *phy)  in ingenic_usb_phy_power_off()  argument
147 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_power_off()
149 	regulator_disable(priv->vcc_supply);  in ingenic_usb_phy_power_off()
154 static int ingenic_usb_phy_set_mode(struct phy *phy,  in ingenic_usb_phy_set_mode()  argument
157 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_set_mode()
162 		reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
167 		writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
171 		reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
176 		writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
180 		reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
185 		writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
189 		return -EINVAL;  in ingenic_usb_phy_set_mode()
204 static void jz4770_usb_phy_init(struct phy *phy)  in jz4770_usb_phy_init()  argument
206 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in jz4770_usb_phy_init()
217 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4770_usb_phy_init()
220 static void jz4775_usb_phy_init(struct phy *phy)  in jz4775_usb_phy_init()  argument
222 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in jz4775_usb_phy_init()
225 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_USB_SEL |  in jz4775_usb_phy_init()
227 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in jz4775_usb_phy_init()
231 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4775_usb_phy_init()
234 static void jz4780_usb_phy_init(struct phy *phy)  in jz4780_usb_phy_init()  argument
236 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in jz4780_usb_phy_init()
239 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_USB_SEL |  in jz4780_usb_phy_init()
241 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in jz4780_usb_phy_init()
244 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4780_usb_phy_init()
247 static void x1000_usb_phy_init(struct phy *phy)  in x1000_usb_phy_init()  argument
249 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in x1000_usb_phy_init()
252 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT;  in x1000_usb_phy_init()
253 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in x1000_usb_phy_init()
259 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x1000_usb_phy_init()
262 static void x1830_usb_phy_init(struct phy *phy)  in x1830_usb_phy_init()  argument
264 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in x1830_usb_phy_init()
268 	writel(USBRDT_VBFIL_EN | USBRDT_UTMI_RST, priv->base + REG_USBRDT_OFFSET);  in x1830_usb_phy_init()
270 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT |  in x1830_usb_phy_init()
272 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in x1830_usb_phy_init()
276 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x1830_usb_phy_init()
279 static void x2000_usb_phy_init(struct phy *phy)  in x2000_usb_phy_init()  argument
281 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in x2000_usb_phy_init()
284 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_DPPD | USBPCR1_DMPD;  in x2000_usb_phy_init()
285 	writel(reg & ~USBPCR1_PORT_RST, priv->base + REG_USBPCR1_OFFSET);  in x2000_usb_phy_init()
288 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x2000_usb_phy_init()
319 	struct device *dev = &pdev->dev;  in ingenic_usb_phy_probe()
324 		return -ENOMEM;  in ingenic_usb_phy_probe()
326 	priv->soc_info = device_get_match_data(dev);  in ingenic_usb_phy_probe()
327 	if (!priv->soc_info) {  in ingenic_usb_phy_probe()
329 		return -ENODEV;  in ingenic_usb_phy_probe()
332 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in ingenic_usb_phy_probe()
333 	if (IS_ERR(priv->base)) {  in ingenic_usb_phy_probe()
335 		return PTR_ERR(priv->base);  in ingenic_usb_phy_probe()
338 	priv->clk = devm_clk_get(dev, NULL);  in ingenic_usb_phy_probe()
339 	if (IS_ERR(priv->clk)) {  in ingenic_usb_phy_probe()
340 		err = PTR_ERR(priv->clk);  in ingenic_usb_phy_probe()
341 		if (err != -EPROBE_DEFER)  in ingenic_usb_phy_probe()
346 	priv->vcc_supply = devm_regulator_get(dev, "vcc");  in ingenic_usb_phy_probe()
347 	if (IS_ERR(priv->vcc_supply)) {  in ingenic_usb_phy_probe()
348 		err = PTR_ERR(priv->vcc_supply);  in ingenic_usb_phy_probe()
349 		if (err != -EPROBE_DEFER)  in ingenic_usb_phy_probe()
354 	priv->phy = devm_phy_create(dev, NULL, &ingenic_usb_phy_ops);  in ingenic_usb_phy_probe()
355 	if (IS_ERR(priv->phy))  in ingenic_usb_phy_probe()
356 		return PTR_ERR(priv->phy);  in ingenic_usb_phy_probe()
358 	phy_set_drvdata(priv->phy, priv);  in ingenic_usb_phy_probe()
366 	{ .compatible = "ingenic,jz4770-phy", .data = &jz4770_soc_info },
367 	{ .compatible = "ingenic,jz4775-phy", .data = &jz4775_soc_info },
368 	{ .compatible = "ingenic,jz4780-phy", .data = &jz4780_soc_info },
369 	{ .compatible = "ingenic,x1000-phy", .data = &x1000_soc_info },
370 	{ .compatible = "ingenic,x1830-phy", .data = &x1830_soc_info },
371 	{ .compatible = "ingenic,x2000-phy", .data = &x2000_soc_info },
379 		.name	= "ingenic-usb-phy",
388 MODULE_DESCRIPTION("Ingenic SoCs USB PHY driver");