1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
13 #include <generic-phy.h>
16 #include <reset-uclass.h>
43 static int sti_usb_phy_deassert(struct sti_usb_phy *phy)  in sti_usb_phy_deassert()  argument
47 	ret = reset_deassert(&phy->global_ctl);  in sti_usb_phy_deassert()
49 		pr_err("PHY global deassert failed: %d", ret);  in sti_usb_phy_deassert()
53 	ret = reset_deassert(&phy->port_ctl);  in sti_usb_phy_deassert()
55 		pr_err("PHY port deassert failed: %d", ret);  in sti_usb_phy_deassert()
60 static int sti_usb_phy_init(struct phy *usb_phy)  in sti_usb_phy_init()
62 	struct udevice *dev = usb_phy->dev;  in sti_usb_phy_init()
63 	struct sti_usb_phy *phy = dev_get_priv(dev);  in sti_usb_phy_init()  local
67 	reg = (void __iomem *)phy->regmap->ranges[0].start + phy->ctrl;  in sti_usb_phy_init()
72 	reg = (void __iomem *)phy->regmap->ranges[0].start + phy->param;  in sti_usb_phy_init()
76 	return sti_usb_phy_deassert(phy);  in sti_usb_phy_init()
79 static int sti_usb_phy_exit(struct phy *usb_phy)  in sti_usb_phy_exit()
81 	struct udevice *dev = usb_phy->dev;  in sti_usb_phy_exit()
82 	struct sti_usb_phy *phy = dev_get_priv(dev);  in sti_usb_phy_exit()  local
85 	ret = reset_assert(&phy->port_ctl);  in sti_usb_phy_exit()
87 		pr_err("PHY port assert failed: %d", ret);  in sti_usb_phy_exit()
91 	ret = reset_assert(&phy->global_ctl);  in sti_usb_phy_exit()
93 		pr_err("PHY global assert failed: %d", ret);  in sti_usb_phy_exit()
116 		pr_err("Can't get syscfg phandle: %d\n", ret);  in sti_usb_phy_probe()
123 		pr_err("unable to find syscon device (%d)\n", ret);  in sti_usb_phy_probe()
127 	priv->regmap = syscon_get_regmap(syscon);  in sti_usb_phy_probe()
128 	if (!priv->regmap) {  in sti_usb_phy_probe()
130 		return -ENODEV;  in sti_usb_phy_probe()
133 	/* get phy param offset */  in sti_usb_phy_probe()
134 	count = fdtdec_get_int_array_count(gd->fdt_blob, dev_of_offset(dev),  in sti_usb_phy_probe()
139 		pr_err("Bad PHY st,syscfg property %d\n", count);  in sti_usb_phy_probe()
140 		return -EINVAL;  in sti_usb_phy_probe()
144 		pr_err("Unsupported PHY param count %d\n", count);  in sti_usb_phy_probe()
145 		return -EINVAL;  in sti_usb_phy_probe()
148 	priv->param = cells[PHYPARAM_REG];  in sti_usb_phy_probe()
149 	priv->ctrl = cells[PHYCTRL_REG];  in sti_usb_phy_probe()
152 	ret = reset_get_by_name(dev, "global", &priv->global_ctl);  in sti_usb_phy_probe()
154 		pr_err("can't get global reset for %s (%d)", dev->name, ret);  in sti_usb_phy_probe()
159 	ret = reset_get_by_name(dev, "port", &priv->port_ctl);  in sti_usb_phy_probe()
161 		pr_err("can't get port reset for %s (%d)", dev->name, ret);  in sti_usb_phy_probe()
169 	{ .compatible = "st,stih407-usb2-phy" },