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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2020 MediaTek Inc. All Rights Reserved.
- *
- * Author: Weijie Gao <weijie.gao@mediatek.com>
- */
- #include <clk.h>
- #include <dm.h>
- #include <generic-phy.h>
- #include <misc.h>
- #include <reset.h>
- #include <dm/device_compat.h>
- #include <linux/delay.h>
- #include <mach/mt7620-sysc.h>
- struct mt7620_usb_phy {
- struct udevice *sysc;
- struct clk_bulk clocks;
- struct reset_ctl_bulk resets;
- };
- static int mt7620_usb_phy_power_on(struct phy *_phy)
- {
- struct mt7620_usb_phy *phy = dev_get_priv(_phy->dev);
- u32 mode = MT7620_SYSC_USB_HOST_MODE;
- int ret;
- reset_deassert_bulk(&phy->resets);
- clk_enable_bulk(&phy->clocks);
- mdelay(10);
- ret = misc_ioctl(phy->sysc, MT7620_SYSC_IOCTL_SET_USB_MODE, &mode);
- if (ret) {
- dev_err(_phy->dev,
- "mt7620_usbphy: failed to set USB host mode\n");
- return ret;
- }
- mdelay(10);
- return 0;
- }
- static int mt7620_usb_phy_power_off(struct phy *_phy)
- {
- struct mt7620_usb_phy *phy = dev_get_priv(_phy->dev);
- clk_disable_bulk(&phy->clocks);
- reset_assert_bulk(&phy->resets);
- return 0;
- }
- static int mt7620_usb_phy_probe(struct udevice *dev)
- {
- struct mt7620_usb_phy *phy = dev_get_priv(dev);
- struct ofnode_phandle_args sysc_args;
- int ret;
- ret = ofnode_parse_phandle_with_args(dev_ofnode(dev), "mediatek,sysc", NULL,
- 0, 0, &sysc_args);
- if (ret) {
- dev_err(dev, "mt7620_usbphy: sysc property not found\n");
- return ret;
- }
- ret = uclass_get_device_by_ofnode(UCLASS_MISC, sysc_args.node,
- &phy->sysc);
- if (ret) {
- dev_err(dev, "mt7620_usbphy: failed to sysc device\n");
- return ret;
- }
- ret = clk_get_bulk(dev, &phy->clocks);
- if (ret) {
- dev_err(dev, "mt7620_usbphy: failed to get clocks\n");
- return ret;
- }
- ret = reset_get_bulk(dev, &phy->resets);
- if (ret) {
- dev_err(dev, "mt7620_usbphy: failed to get reset control\n");
- return ret;
- }
- return 0;
- }
- static struct phy_ops mt7620_usb_phy_ops = {
- .power_on = mt7620_usb_phy_power_on,
- .power_off = mt7620_usb_phy_power_off,
- };
- static const struct udevice_id mt7620_usb_phy_ids[] = {
- { .compatible = "mediatek,mt7620-usbphy" },
- { }
- };
- U_BOOT_DRIVER(mt7620_usb_phy) = {
- .name = "mt7620_usb_phy",
- .id = UCLASS_PHY,
- .of_match = mt7620_usb_phy_ids,
- .ops = &mt7620_usb_phy_ops,
- .probe = mt7620_usb_phy_probe,
- .priv_auto = sizeof(struct mt7620_usb_phy),
- };
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