1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright (c) 2014-2023, The Linux Foundation. All rights reserved.
7 #include <linux/delay.h>
15 #include <linux/reset.h>
76 	u32 delay;  member
93 		.delay = 15
200 	struct reset_control		*reset;  member
208 	const struct m31_phy_regs *regs = qphy->regs;  in m31usb_phy_init()
211 	ret = regulator_enable(qphy->vreg);  in m31usb_phy_init()
213 		dev_err(&phy->dev, "failed to enable regulator, %d\n", ret);  in m31usb_phy_init()
217 	ret = clk_prepare_enable(qphy->clk);  in m31usb_phy_init()
219 		regulator_disable(qphy->vreg);  in m31usb_phy_init()
220 		dev_err(&phy->dev, "failed to enable cfg ahb clock, %d\n", ret);  in m31usb_phy_init()
224 	/* Perform phy reset */  in m31usb_phy_init()
225 	reset_control_assert(qphy->reset);  in m31usb_phy_init()
227 	reset_control_deassert(qphy->reset);  in m31usb_phy_init()
230 	if (qphy->ulpi_mode)  in m31usb_phy_init()
231 		writel(0x0, qphy->base + USB2PHY_PORT_UTMI_CTRL2);  in m31usb_phy_init()
234 	writel(POWER_UP, qphy->base + USB2PHY_PORT_POWERDOWN);  in m31usb_phy_init()
237 	for (i = 0; i < qphy->nregs; i++) {  in m31usb_phy_init()
238 		writel(regs[i].val, qphy->base + regs[i].off);  in m31usb_phy_init()
239 		if (regs[i].delay)  in m31usb_phy_init()
240 			udelay(regs[i].delay);  in m31usb_phy_init()
251 	writel_relaxed(POWER_DOWN, qphy->base + USB2PHY_PORT_POWERDOWN);  in m31usb_phy_shutdown()
253 	clk_disable_unprepare(qphy->clk);  in m31usb_phy_shutdown()
255 	regulator_disable(qphy->vreg);  in m31usb_phy_shutdown()
270 	struct device *dev = &pdev->dev;  in m31usb_phy_probe()
275 		return -ENOMEM;  in m31usb_phy_probe()
277 	qphy->base = devm_platform_ioremap_resource(pdev, 0);  in m31usb_phy_probe()
278 	if (IS_ERR(qphy->base))  in m31usb_phy_probe()
279 		return PTR_ERR(qphy->base);  in m31usb_phy_probe()
281 	qphy->reset = devm_reset_control_get_exclusive_by_index(dev, 0);  in m31usb_phy_probe()
282 	if (IS_ERR(qphy->reset))  in m31usb_phy_probe()
283 		return PTR_ERR(qphy->reset);  in m31usb_phy_probe()
285 	qphy->clk = devm_clk_get(dev, NULL);  in m31usb_phy_probe()
286 	if (IS_ERR(qphy->clk))  in m31usb_phy_probe()
287 		return dev_err_probe(dev, PTR_ERR(qphy->clk),  in m31usb_phy_probe()
291 	qphy->regs		= data->regs;  in m31usb_phy_probe()
292 	qphy->nregs		= data->nregs;  in m31usb_phy_probe()
293 	qphy->ulpi_mode		= data->ulpi_mode;  in m31usb_phy_probe()
295 	qphy->phy = devm_phy_create(dev, NULL, &m31usb_phy_gen_ops);  in m31usb_phy_probe()
296 	if (IS_ERR(qphy->phy))  in m31usb_phy_probe()
297 		return dev_err_probe(dev, PTR_ERR(qphy->phy),  in m31usb_phy_probe()
300 	qphy->vreg = devm_regulator_get(dev, "vdd");  in m31usb_phy_probe()
301 	if (IS_ERR(qphy->vreg))  in m31usb_phy_probe()
302 		return dev_err_probe(dev, PTR_ERR(qphy->vreg),  in m31usb_phy_probe()
305 	phy_set_drvdata(qphy->phy, qphy);  in m31usb_phy_probe()
327 	{ .compatible = "qcom,ipq5018-usb-hsphy", .data = &m31_ipq5018_data },
328 	{ .compatible = "qcom,ipq5332-usb-hsphy", .data = &m31_ipq5332_data },
336 		.name = "qcom-m31usb-phy",