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![Patrice Chotard](/assets/img/avatar_default.png)
In case of phy are provided from a PHY provider nodes as following: usbphyc: usb-phy@5a006000 { compatible = "st,stm32mp1-usbphyc"; reg = <0x5a006000 0x1000>; clocks = <&rcc_clk USBPHY_K>; resets = <&rcc_rst USBPHY_R>; #address-cells = <1>; #size-cells = <0>; usbphyc_port0: usb-phy@0 { reg = <0>; phy-supply = <&vdd_usb>; vdda1v1-supply = <®11>; vdda1v8-supply = <®18> #phy-cells = <0>; }; usbphyc_port1: usb-phy@1 { reg = <1>; phy-supply = <&vdd_usb>; vdda1v1-supply = <®11>; vdda1v8-supply = <®18> #phy-cells = <1>; }; }; and PHY are called as following: usbh_ehci: usbh-ehci@5800d000 { compatible = "generic-ehci"; reg = <0x5800d000 0x1000>; clocks = <&rcc_clk USBH>; resets = <&rcc_rst USBH_R>; interrupts = <GIC_SPI 75 IRQ_TYPE_NONE>; companion = <&usbh_ohci>; phys = <&usbphyc_port0>; phy-names = "usb"; status = "okay"; }; generic_phy_get_by_index() must be updated to first look for PHY phandle as previously and in case of error looks for PHY provider by finding the parent's current node which is the PHY provider. args (ofnode_phandle_args struct) must also be updated by inserting the phy index into the PHY provider as args[0]. Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
148 lines
3.1 KiB
C
148 lines
3.1 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 <common.h>
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#include <dm.h>
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#include <generic-phy.h>
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static inline struct phy_ops *phy_dev_ops(struct udevice *dev)
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{
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return (struct phy_ops *)dev->driver->ops;
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}
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static int generic_phy_xlate_offs_flags(struct phy *phy,
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struct ofnode_phandle_args *args)
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{
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debug("%s(phy=%p)\n", __func__, phy);
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if (args->args_count > 1) {
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debug("Invaild args_count: %d\n", args->args_count);
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return -EINVAL;
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}
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if (args->args_count)
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phy->id = args->args[0];
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else
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phy->id = 0;
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return 0;
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}
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int generic_phy_get_by_index(struct udevice *dev, int index,
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struct phy *phy)
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{
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struct ofnode_phandle_args args;
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struct phy_ops *ops;
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struct udevice *phydev;
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int i, ret;
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debug("%s(dev=%p, index=%d, phy=%p)\n", __func__, dev, index, phy);
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assert(phy);
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phy->dev = NULL;
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ret = dev_read_phandle_with_args(dev, "phys", "#phy-cells", 0, index,
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&args);
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if (ret) {
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debug("%s: dev_read_phandle_with_args failed: err=%d\n",
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__func__, ret);
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return ret;
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}
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ret = uclass_get_device_by_ofnode(UCLASS_PHY, args.node, &phydev);
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if (ret) {
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debug("%s: uclass_get_device_by_ofnode failed: err=%d\n",
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__func__, ret);
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/* Check if args.node's parent is a PHY provider */
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ret = uclass_get_device_by_ofnode(UCLASS_PHY,
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ofnode_get_parent(args.node),
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&phydev);
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if (ret)
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return ret;
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/* insert phy idx at first position into args array */
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for (i = args.args_count; i > 1 ; i--)
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args.args[i] = args.args[i - 1];
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args.args_count++;
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args.args[0] = ofnode_read_u32_default(args.node, "reg", -1);
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}
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phy->dev = phydev;
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ops = phy_dev_ops(phydev);
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if (ops->of_xlate)
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ret = ops->of_xlate(phy, &args);
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else
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ret = generic_phy_xlate_offs_flags(phy, &args);
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if (ret) {
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debug("of_xlate() failed: %d\n", ret);
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goto err;
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}
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return 0;
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err:
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return ret;
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}
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int generic_phy_get_by_name(struct udevice *dev, const char *phy_name,
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struct phy *phy)
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{
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int index;
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debug("%s(dev=%p, name=%s, phy=%p)\n", __func__, dev, phy_name, phy);
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index = dev_read_stringlist_search(dev, "phy-names", phy_name);
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if (index < 0) {
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debug("dev_read_stringlist_search() failed: %d\n", index);
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return index;
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}
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return generic_phy_get_by_index(dev, index, phy);
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}
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int generic_phy_init(struct phy *phy)
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{
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struct phy_ops const *ops = phy_dev_ops(phy->dev);
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return ops->init ? ops->init(phy) : 0;
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}
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int generic_phy_reset(struct phy *phy)
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{
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struct phy_ops const *ops = phy_dev_ops(phy->dev);
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return ops->reset ? ops->reset(phy) : 0;
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}
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int generic_phy_exit(struct phy *phy)
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{
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struct phy_ops const *ops = phy_dev_ops(phy->dev);
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return ops->exit ? ops->exit(phy) : 0;
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}
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int generic_phy_power_on(struct phy *phy)
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{
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struct phy_ops const *ops = phy_dev_ops(phy->dev);
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return ops->power_on ? ops->power_on(phy) : 0;
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}
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int generic_phy_power_off(struct phy *phy)
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{
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struct phy_ops const *ops = phy_dev_ops(phy->dev);
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return ops->power_off ? ops->power_off(phy) : 0;
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}
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UCLASS_DRIVER(phy) = {
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.id = UCLASS_PHY,
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.name = "phy",
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};
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