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f9852acdce
The reset function should place the phy into reset, while the init function should take the phy out of reset. Currently the reset function takes it out of reset, and the init calls the reset. Signed-off-by: Adam Ford <aford173@gmail.com>
101 lines
2 KiB
C
101 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
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* Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
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*/
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#include <clk.h>
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#include <common.h>
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#include <dm.h>
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#include <dm/device.h>
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#include <dm/device_compat.h>
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#include <generic-phy.h>
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#include <asm-generic/gpio.h>
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struct nop_phy_priv {
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struct clk_bulk bulk;
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#if CONFIG_IS_ENABLED(DM_GPIO)
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struct gpio_desc reset_gpio;
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#endif
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};
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#if CONFIG_IS_ENABLED(DM_GPIO)
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static int nop_phy_reset(struct phy *phy)
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{
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struct nop_phy_priv *priv = dev_get_priv(phy->dev);
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/* Return if there is no gpio since it's optional */
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if (!dm_gpio_is_valid(&priv->reset_gpio))
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return 0;
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return dm_gpio_set_value(&priv->reset_gpio, true);
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}
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#endif
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static int nop_phy_init(struct phy *phy)
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{
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struct nop_phy_priv *priv = dev_get_priv(phy->dev);
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int ret = 0;
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if (CONFIG_IS_ENABLED(CLK)) {
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ret = clk_enable_bulk(&priv->bulk);
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if (ret)
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return ret;
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}
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#if CONFIG_IS_ENABLED(DM_GPIO)
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/* Take phy out of reset */
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ret = dm_gpio_set_value(&priv->reset_gpio, false);
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if (ret) {
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if (CONFIG_IS_ENABLED(CLK))
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clk_disable_bulk(&priv->bulk);
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return ret;
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}
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#endif
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return 0;
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}
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static int nop_phy_probe(struct udevice *dev)
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{
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struct nop_phy_priv *priv = dev_get_priv(dev);
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int ret = 0;
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if (CONFIG_IS_ENABLED(CLK)) {
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ret = clk_get_bulk(dev, &priv->bulk);
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if (ret < 0) {
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dev_err(dev, "Failed to get clk: %d\n", ret);
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return ret;
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}
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}
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#if CONFIG_IS_ENABLED(DM_GPIO)
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ret = gpio_request_by_name(dev, "reset-gpios", 0,
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&priv->reset_gpio,
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GPIOD_IS_OUT);
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#endif
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if (ret != -ENOENT)
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return ret;
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return 0;
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}
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static const struct udevice_id nop_phy_ids[] = {
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{ .compatible = "nop-phy" },
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{ .compatible = "usb-nop-xceiv" },
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{ }
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};
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static struct phy_ops nop_phy_ops = {
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.init = nop_phy_init,
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#if CONFIG_IS_ENABLED(DM_GPIO)
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.reset = nop_phy_reset,
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#endif
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};
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U_BOOT_DRIVER(nop_phy) = {
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.name = "nop_phy",
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.id = UCLASS_PHY,
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.of_match = nop_phy_ids,
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.ops = &nop_phy_ops,
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.probe = nop_phy_probe,
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.priv_auto = sizeof(struct nop_phy_priv),
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};
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