Lines Matching +full:usb3 +full:- +full:phy
1 // SPDX-License-Identifier: GPL-2.0
3 * phy-uniphier-usb3ss.c - SS-PHY driver for Socionext UniPhier USB3 controller
4 * Copyright 2015-2018 Socionext Inc.
19 #include <linux/phy/phy.h>
71 writel(data, priv->base + SSPHY_TESTI); in uniphier_u3ssphy_testio_write()
72 readl(priv->base + SSPHY_TESTO); in uniphier_u3ssphy_testio_write()
73 readl(priv->base + SSPHY_TESTO); in uniphier_u3ssphy_testio_write()
80 u8 field_mask = GENMASK(p->field.msb, p->field.lsb); in uniphier_u3ssphy_set_param()
85 val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no); in uniphier_u3ssphy_set_param()
87 val = readl(priv->base + SSPHY_TESTO); in uniphier_u3ssphy_set_param()
91 data = field_mask & (p->value << p->field.lsb); in uniphier_u3ssphy_set_param()
93 val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no); in uniphier_u3ssphy_set_param()
100 val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no); in uniphier_u3ssphy_set_param()
102 readl(priv->base + SSPHY_TESTO); in uniphier_u3ssphy_set_param()
105 static int uniphier_u3ssphy_power_on(struct phy *phy) in uniphier_u3ssphy_power_on() argument
107 struct uniphier_u3ssphy_priv *priv = phy_get_drvdata(phy); in uniphier_u3ssphy_power_on()
110 ret = clk_prepare_enable(priv->clk_ext); in uniphier_u3ssphy_power_on()
114 ret = clk_prepare_enable(priv->clk); in uniphier_u3ssphy_power_on()
118 ret = reset_control_deassert(priv->rst); in uniphier_u3ssphy_power_on()
122 if (priv->vbus) { in uniphier_u3ssphy_power_on()
123 ret = regulator_enable(priv->vbus); in uniphier_u3ssphy_power_on()
131 reset_control_assert(priv->rst); in uniphier_u3ssphy_power_on()
133 clk_disable_unprepare(priv->clk); in uniphier_u3ssphy_power_on()
135 clk_disable_unprepare(priv->clk_ext); in uniphier_u3ssphy_power_on()
140 static int uniphier_u3ssphy_power_off(struct phy *phy) in uniphier_u3ssphy_power_off() argument
142 struct uniphier_u3ssphy_priv *priv = phy_get_drvdata(phy); in uniphier_u3ssphy_power_off()
144 if (priv->vbus) in uniphier_u3ssphy_power_off()
145 regulator_disable(priv->vbus); in uniphier_u3ssphy_power_off()
147 reset_control_assert(priv->rst); in uniphier_u3ssphy_power_off()
148 clk_disable_unprepare(priv->clk); in uniphier_u3ssphy_power_off()
149 clk_disable_unprepare(priv->clk_ext); in uniphier_u3ssphy_power_off()
154 static int uniphier_u3ssphy_init(struct phy *phy) in uniphier_u3ssphy_init() argument
156 struct uniphier_u3ssphy_priv *priv = phy_get_drvdata(phy); in uniphier_u3ssphy_init()
159 ret = clk_prepare_enable(priv->clk_parent); in uniphier_u3ssphy_init()
163 ret = clk_prepare_enable(priv->clk_parent_gio); in uniphier_u3ssphy_init()
167 ret = reset_control_deassert(priv->rst_parent); in uniphier_u3ssphy_init()
171 ret = reset_control_deassert(priv->rst_parent_gio); in uniphier_u3ssphy_init()
175 if (priv->data->is_legacy) in uniphier_u3ssphy_init()
178 for (i = 0; i < priv->data->nparams; i++) in uniphier_u3ssphy_init()
179 uniphier_u3ssphy_set_param(priv, &priv->data->param[i]); in uniphier_u3ssphy_init()
184 reset_control_assert(priv->rst_parent); in uniphier_u3ssphy_init()
186 clk_disable_unprepare(priv->clk_parent_gio); in uniphier_u3ssphy_init()
188 clk_disable_unprepare(priv->clk_parent); in uniphier_u3ssphy_init()
193 static int uniphier_u3ssphy_exit(struct phy *phy) in uniphier_u3ssphy_exit() argument
195 struct uniphier_u3ssphy_priv *priv = phy_get_drvdata(phy); in uniphier_u3ssphy_exit()
197 reset_control_assert(priv->rst_parent_gio); in uniphier_u3ssphy_exit()
198 reset_control_assert(priv->rst_parent); in uniphier_u3ssphy_exit()
199 clk_disable_unprepare(priv->clk_parent_gio); in uniphier_u3ssphy_exit()
200 clk_disable_unprepare(priv->clk_parent); in uniphier_u3ssphy_exit()
215 struct device *dev = &pdev->dev; in uniphier_u3ssphy_probe()
218 struct phy *phy; in uniphier_u3ssphy_probe() local
222 return -ENOMEM; in uniphier_u3ssphy_probe()
224 priv->dev = dev; in uniphier_u3ssphy_probe()
225 priv->data = of_device_get_match_data(dev); in uniphier_u3ssphy_probe()
226 if (WARN_ON(!priv->data || in uniphier_u3ssphy_probe()
227 priv->data->nparams > MAX_PHY_PARAMS)) in uniphier_u3ssphy_probe()
228 return -EINVAL; in uniphier_u3ssphy_probe()
230 priv->base = devm_platform_ioremap_resource(pdev, 0); in uniphier_u3ssphy_probe()
231 if (IS_ERR(priv->base)) in uniphier_u3ssphy_probe()
232 return PTR_ERR(priv->base); in uniphier_u3ssphy_probe()
234 if (!priv->data->is_legacy) { in uniphier_u3ssphy_probe()
235 priv->clk = devm_clk_get(dev, "phy"); in uniphier_u3ssphy_probe()
236 if (IS_ERR(priv->clk)) in uniphier_u3ssphy_probe()
237 return PTR_ERR(priv->clk); in uniphier_u3ssphy_probe()
239 priv->clk_ext = devm_clk_get_optional(dev, "phy-ext"); in uniphier_u3ssphy_probe()
240 if (IS_ERR(priv->clk_ext)) in uniphier_u3ssphy_probe()
241 return PTR_ERR(priv->clk_ext); in uniphier_u3ssphy_probe()
243 priv->rst = devm_reset_control_get_shared(dev, "phy"); in uniphier_u3ssphy_probe()
244 if (IS_ERR(priv->rst)) in uniphier_u3ssphy_probe()
245 return PTR_ERR(priv->rst); in uniphier_u3ssphy_probe()
247 priv->clk_parent_gio = devm_clk_get(dev, "gio"); in uniphier_u3ssphy_probe()
248 if (IS_ERR(priv->clk_parent_gio)) in uniphier_u3ssphy_probe()
249 return PTR_ERR(priv->clk_parent_gio); in uniphier_u3ssphy_probe()
251 priv->rst_parent_gio = in uniphier_u3ssphy_probe()
253 if (IS_ERR(priv->rst_parent_gio)) in uniphier_u3ssphy_probe()
254 return PTR_ERR(priv->rst_parent_gio); in uniphier_u3ssphy_probe()
257 priv->clk_parent = devm_clk_get(dev, "link"); in uniphier_u3ssphy_probe()
258 if (IS_ERR(priv->clk_parent)) in uniphier_u3ssphy_probe()
259 return PTR_ERR(priv->clk_parent); in uniphier_u3ssphy_probe()
261 priv->rst_parent = devm_reset_control_get_shared(dev, "link"); in uniphier_u3ssphy_probe()
262 if (IS_ERR(priv->rst_parent)) in uniphier_u3ssphy_probe()
263 return PTR_ERR(priv->rst_parent); in uniphier_u3ssphy_probe()
265 priv->vbus = devm_regulator_get_optional(dev, "vbus"); in uniphier_u3ssphy_probe()
266 if (IS_ERR(priv->vbus)) { in uniphier_u3ssphy_probe()
267 if (PTR_ERR(priv->vbus) == -EPROBE_DEFER) in uniphier_u3ssphy_probe()
268 return PTR_ERR(priv->vbus); in uniphier_u3ssphy_probe()
269 priv->vbus = NULL; in uniphier_u3ssphy_probe()
272 phy = devm_phy_create(dev, dev->of_node, &uniphier_u3ssphy_ops); in uniphier_u3ssphy_probe()
273 if (IS_ERR(phy)) in uniphier_u3ssphy_probe()
274 return PTR_ERR(phy); in uniphier_u3ssphy_probe()
276 phy_set_drvdata(phy, priv); in uniphier_u3ssphy_probe()
312 .compatible = "socionext,uniphier-pro4-usb3-ssphy",
316 .compatible = "socionext,uniphier-pro5-usb3-ssphy",
320 .compatible = "socionext,uniphier-pxs2-usb3-ssphy",
324 .compatible = "socionext,uniphier-ld20-usb3-ssphy",
328 .compatible = "socionext,uniphier-pxs3-usb3-ssphy",
338 .name = "uniphier-usb3-ssphy",
346 MODULE_DESCRIPTION("UniPhier SS-PHY driver for USB3 controller");