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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
* Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
*/
#include <clk.h>
#include <common.h>
#include <dm.h>
#include <dm/device.h>
#include <dm/device_compat.h>
#include <generic-phy.h>
#include <asm-generic/gpio.h>
struct nop_phy_priv {
struct clk_bulk bulk;
#if CONFIG_IS_ENABLED(DM_GPIO)
struct gpio_desc reset_gpio;
#endif
};
#if CONFIG_IS_ENABLED(DM_GPIO)
static int nop_phy_reset(struct phy *phy)
{
struct nop_phy_priv *priv = dev_get_priv(phy->dev);
/* Return if there is no gpio since it's optional */
if (!dm_gpio_is_valid(&priv->reset_gpio))
return 0;
return dm_gpio_set_value(&priv->reset_gpio, true);
}
#endif
static int nop_phy_init(struct phy *phy)
{
struct nop_phy_priv *priv = dev_get_priv(phy->dev);
int ret = 0;
if (CONFIG_IS_ENABLED(CLK)) {
ret = clk_enable_bulk(&priv->bulk);
if (ret)
return ret;
}
#if CONFIG_IS_ENABLED(DM_GPIO)
/* Take phy out of reset */
if (dm_gpio_is_valid(&priv->reset_gpio)) {
ret = dm_gpio_set_value(&priv->reset_gpio, false);
if (ret) {
if (CONFIG_IS_ENABLED(CLK))
clk_disable_bulk(&priv->bulk);
return ret;
}
}
#endif
return 0;
}
static int nop_phy_probe(struct udevice *dev)
{
struct nop_phy_priv *priv = dev_get_priv(dev);
int ret = 0;
if (CONFIG_IS_ENABLED(CLK)) {
ret = clk_get_bulk(dev, &priv->bulk);
if (ret < 0) {
dev_err(dev, "Failed to get clk: %d\n", ret);
return ret;
}
}
#if CONFIG_IS_ENABLED(DM_GPIO)
ret = gpio_request_by_name(dev, "reset-gpios", 0,
&priv->reset_gpio,
GPIOD_IS_OUT);
#endif
if (ret != -ENOENT)
return ret;
return 0;
}
static const struct udevice_id nop_phy_ids[] = {
{ .compatible = "nop-phy" },
{ .compatible = "usb-nop-xceiv" },
{ }
};
static struct phy_ops nop_phy_ops = {
.init = nop_phy_init,
#if CONFIG_IS_ENABLED(DM_GPIO)
.reset = nop_phy_reset,
#endif
};
U_BOOT_DRIVER(nop_phy) = {
.name = "nop_phy",
.id = UCLASS_PHY,
.of_match = nop_phy_ids,
.ops = &nop_phy_ops,
.probe = nop_phy_probe,
.priv_auto = sizeof(struct nop_phy_priv),
};
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