/* * ET1011C PHY driver * * Derived from Linux kernel driver by Chaithrika U S * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/ * * SPDX-License-Identifier: GPL-2.0+ */ #include <config.h> #include <phy.h> #define ET1011C_CONFIG_REG (0x16) #define ET1011C_TX_FIFO_MASK (0x3 << 12) #define ET1011C_TX_FIFO_DEPTH_8 (0x0 << 12) #define ET1011C_TX_FIFO_DEPTH_16 (0x1 << 12) #define ET1011C_INTERFACE_MASK (0x7 << 0) #define ET1011C_GMII_INTERFACE (0x2 << 0) #define ET1011C_SYS_CLK_EN (0x1 << 4) #define ET1011C_TX_CLK_EN (0x1 << 5) #define ET1011C_STATUS_REG (0x1A) #define ET1011C_DUPLEX_STATUS (0x1 << 7) #define ET1011C_SPEED_MASK (0x3 << 8) #define ET1011C_SPEED_1000 (0x2 << 8) #define ET1011C_SPEED_100 (0x1 << 8) #define ET1011C_SPEED_10 (0x0 << 8) static int et1011c_config(struct phy_device *phydev) { int ctl = 0; ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); if (ctl < 0) return ctl; ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_ANENABLE); /* First clear the PHY */ phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl | BMCR_RESET); return genphy_config_aneg(phydev); } static int et1011c_parse_status(struct phy_device *phydev) { int mii_reg; int speed; mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_STATUS_REG); if (mii_reg & ET1011C_DUPLEX_STATUS) phydev->duplex = DUPLEX_FULL; else phydev->duplex = DUPLEX_HALF; speed = mii_reg & ET1011C_SPEED_MASK; switch (speed) { case ET1011C_SPEED_1000: phydev->speed = SPEED_1000; mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG); mii_reg &= ~ET1011C_TX_FIFO_MASK; phy_write(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG, mii_reg | ET1011C_GMII_INTERFACE | ET1011C_SYS_CLK_EN | #ifdef CONFIG_PHY_ET1011C_TX_CLK_FIX ET1011C_TX_CLK_EN | #endif ET1011C_TX_FIFO_DEPTH_16); break; case ET1011C_SPEED_100: phydev->speed = SPEED_100; break; case ET1011C_SPEED_10: phydev->speed = SPEED_10; break; } return 0; } static int et1011c_startup(struct phy_device *phydev) { genphy_update_link(phydev); et1011c_parse_status(phydev); return 0; } static struct phy_driver et1011c_driver = { .name = "ET1011C", .uid = 0x0282f014, .mask = 0xfffffff0, .features = PHY_GBIT_FEATURES, .config = &et1011c_config, .startup = &et1011c_startup, }; int phy_et1011c_init(void) { phy_register(&et1011c_driver); return 0; }