2  * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
5  * SPDX-License-Identifier:	GPL-2.0+
14 #include <generic-phy.h>
17 #include <reset-uclass.h>
44 static int sti_usb_phy_deassert(struct sti_usb_phy *phy)  in sti_usb_phy_deassert()  argument
48 	ret = reset_deassert(&phy->global_ctl);  in sti_usb_phy_deassert()
50 		pr_err("PHY global deassert failed: %d", ret);  in sti_usb_phy_deassert()
54 	ret = reset_deassert(&phy->port_ctl);  in sti_usb_phy_deassert()
56 		pr_err("PHY port deassert failed: %d", ret);  in sti_usb_phy_deassert()
61 static int sti_usb_phy_init(struct phy *usb_phy)  in sti_usb_phy_init()
63 	struct udevice *dev = usb_phy->dev;  in sti_usb_phy_init()
64 	struct sti_usb_phy *phy = dev_get_priv(dev);  in sti_usb_phy_init()  local
68 	reg = (void __iomem *)phy->regmap->base + phy->ctrl;  in sti_usb_phy_init()
73 	reg = (void __iomem *)phy->regmap->base + phy->param;  in sti_usb_phy_init()
77 	return sti_usb_phy_deassert(phy);  in sti_usb_phy_init()
80 static int sti_usb_phy_exit(struct phy *usb_phy)  in sti_usb_phy_exit()
82 	struct udevice *dev = usb_phy->dev;  in sti_usb_phy_exit()
83 	struct sti_usb_phy *phy = dev_get_priv(dev);  in sti_usb_phy_exit()  local
86 	ret = reset_assert(&phy->port_ctl);  in sti_usb_phy_exit()
88 		pr_err("PHY port assert failed: %d", ret);  in sti_usb_phy_exit()
92 	ret = reset_assert(&phy->global_ctl);  in sti_usb_phy_exit()
94 		pr_err("PHY global assert failed: %d", ret);  in sti_usb_phy_exit()
117 		pr_err("Can't get syscfg phandle: %d\n", ret);  in sti_usb_phy_probe()
124 		pr_err("unable to find syscon device (%d)\n", ret);  in sti_usb_phy_probe()
128 	priv->regmap = syscon_get_regmap(syscon);  in sti_usb_phy_probe()
129 	if (!priv->regmap) {  in sti_usb_phy_probe()
131 		return -ENODEV;  in sti_usb_phy_probe()
134 	/* get phy param offset */  in sti_usb_phy_probe()
135 	count = fdtdec_get_int_array_count(gd->fdt_blob, dev_of_offset(dev),  in sti_usb_phy_probe()
140 		pr_err("Bad PHY st,syscfg property %d\n", count);  in sti_usb_phy_probe()
141 		return -EINVAL;  in sti_usb_phy_probe()
145 		pr_err("Unsupported PHY param count %d\n", count);  in sti_usb_phy_probe()
146 		return -EINVAL;  in sti_usb_phy_probe()
149 	priv->param = cells[PHYPARAM_REG];  in sti_usb_phy_probe()
150 	priv->ctrl = cells[PHYCTRL_REG];  in sti_usb_phy_probe()
153 	ret = reset_get_by_name(dev, "global", &priv->global_ctl);  in sti_usb_phy_probe()
155 		pr_err("can't get global reset for %s (%d)", dev->name, ret);  in sti_usb_phy_probe()
160 	ret = reset_get_by_name(dev, "port", &priv->port_ctl);  in sti_usb_phy_probe()
162 		pr_err("can't get port reset for %s (%d)", dev->name, ret);  in sti_usb_phy_probe()
170 	{ .compatible = "st,stih407-usb2-phy" },