128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* TI Generic PHY Init to register any TI Ethernet PHYs
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*
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* Author: Dan Murphy <dmurphy@ti.com>
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*
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* Copyright (C) 2019-20 Texas Instruments Inc.
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*/
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#include <phy.h>
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#include "ti_phy_init.h"
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#define DP83822_DEVADDR 0x1f
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#define MII_DP83822_RCSR 0x17
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/* RCSR bits */
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#define DP83822_RX_CLK_SHIFT BIT(12)
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#define DP83822_TX_CLK_SHIFT BIT(11)
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/* DP83822 specific RGMII RX/TX delay configuration. */
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static int dp83822_config(struct phy_device *phydev)
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{
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ofnode node = phy_get_ofnode(phydev);
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u32 rgmii_delay = 0;
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u32 rx_delay = 0;
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u32 tx_delay = 0;
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int ret;
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ret = ofnode_read_u32(node, "rx-internal-delay-ps", &rx_delay);
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if (ret) {
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rx_delay = phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
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phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID;
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}
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ret = ofnode_read_u32(node, "tx-internal-delay-ps", &tx_delay);
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if (ret) {
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tx_delay = phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
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phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID;
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}
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/* Bit set means Receive path internal clock shift is ENABLED */
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if (rx_delay)
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rgmii_delay |= DP83822_RX_CLK_SHIFT;
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/* Bit set means Transmit path internal clock shift is DISABLED */
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if (!tx_delay)
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rgmii_delay |= DP83822_TX_CLK_SHIFT;
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ret = phy_modify_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RCSR,
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DP83822_RX_CLK_SHIFT | DP83822_TX_CLK_SHIFT,
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rgmii_delay);
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if (ret)
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return ret;
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return genphy_config_aneg(phydev);
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}
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U_BOOT_PHY_DRIVER(dp83822) = {
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.name = "TI DP83822",
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.uid = 0x2000a240,
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.mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &dp83822_config,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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U_BOOT_PHY_DRIVER(dp83826nc) = {
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.name = "TI DP83826NC",
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.uid = 0x2000a110,
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.mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config_aneg,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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U_BOOT_PHY_DRIVER(dp83826c) = {
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.name = "TI DP83826C",
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.uid = 0x2000a130,
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.mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config_aneg,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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U_BOOT_PHY_DRIVER(dp83825s) = {
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.name = "TI DP83825S",
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.uid = 0x2000a140,
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.mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config_aneg,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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U_BOOT_PHY_DRIVER(dp83825i) = {
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.name = "TI DP83825I",
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.uid = 0x2000a150,
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.mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config_aneg,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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U_BOOT_PHY_DRIVER(dp83825m) = {
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.name = "TI DP83825M",
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.uid = 0x2000a160,
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.mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config_aneg,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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U_BOOT_PHY_DRIVER(dp83825cs) = {
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.name = "TI DP83825CS",
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.uid = 0x2000a170,
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.mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config_aneg,
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.startup = &genphy_startup,
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.shutdown = &genphy_shutdown,
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};
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