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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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