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If DM_ETH_PHY config is enabled PHY gpio reset is taken care by the eth-phy-uclass driver, so use the PHY gpio reset functionality from ethernet_id file when this config is disabled to reset the PHY. Use debug() print instead of dev_err() to avoid warning incase if phy-id compatible string is not present. Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/4d0fd3f9f886c1d943776025e5efb5438b0eb389.1648631275.git.michal.simek@xilinx.com
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Xilinx ethernet phy reset driver
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*
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* Copyright (C) 2022 Xilinx, Inc.
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*/
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#include <common.h>
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#include <dm/device_compat.h>
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#include <phy.h>
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#include <linux/delay.h>
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#include <asm/gpio.h>
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struct phy_device *phy_connect_phy_id(struct mii_dev *bus, struct udevice *dev,
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int phyaddr, phy_interface_t interface)
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{
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struct phy_device *phydev;
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struct ofnode_phandle_args phandle_args;
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struct gpio_desc gpio;
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ofnode node;
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u32 id, assert, deassert;
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u16 vendor, device;
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int ret;
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if (dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
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&phandle_args))
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return NULL;
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if (!ofnode_valid(phandle_args.node))
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return NULL;
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node = phandle_args.node;
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ret = ofnode_read_eth_phy_id(node, &vendor, &device);
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if (ret) {
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debug("Failed to read eth PHY id, err: %d\n", ret);
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return NULL;
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}
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if (!IS_ENABLED(CONFIG_DM_ETH_PHY)) {
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ret = gpio_request_by_name_nodev(node, "reset-gpios", 0, &gpio,
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GPIOD_ACTIVE_LOW);
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if (!ret) {
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assert = ofnode_read_u32_default(node,
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"reset-assert-us", 0);
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deassert = ofnode_read_u32_default(node,
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"reset-deassert-us",
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0);
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ret = dm_gpio_set_value(&gpio, 1);
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if (ret) {
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dev_err(dev,
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"Failed assert gpio, err: %d\n", ret);
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return NULL;
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}
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udelay(assert);
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ret = dm_gpio_set_value(&gpio, 0);
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if (ret) {
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dev_err(dev,
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"Failed deassert gpio, err: %d\n",
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ret);
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return NULL;
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}
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udelay(deassert);
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}
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}
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id = vendor << 16 | device;
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phydev = phy_device_create(bus, phyaddr, id, false, interface);
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if (phydev)
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phydev->node = node;
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return phydev;
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}
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