1 /* 2 * Atheros PHY drivers 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 * 6 * Copyright 2011, 2013 Freescale Semiconductor, Inc. 7 * author Andy Fleming 8 */ 9 #include <phy.h> 10 11 #define AR803x_PHY_DEBUG_ADDR_REG 0x1d 12 #define AR803x_PHY_DEBUG_DATA_REG 0x1e 13 14 #define AR803x_DEBUG_REG_5 0x5 15 #define AR803x_RGMII_TX_CLK_DLY 0x100 16 17 #define AR803x_DEBUG_REG_0 0x0 18 #define AR803x_RGMII_RX_CLK_DLY 0x8000 19 20 static int ar8021_config(struct phy_device *phydev) 21 { 22 phy_write(phydev, MDIO_DEVAD_NONE, 0x00, 0x1200); 23 phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05); 24 phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x3D47); 25 26 phydev->supported = phydev->drv->features; 27 return 0; 28 } 29 30 static int ar8031_config(struct phy_device *phydev) 31 { 32 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID || 33 phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) { 34 phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG, 35 AR803x_DEBUG_REG_5); 36 phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG, 37 AR803x_RGMII_TX_CLK_DLY); 38 } 39 40 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID || 41 phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) { 42 phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG, 43 AR803x_DEBUG_REG_0); 44 phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG, 45 AR803x_RGMII_RX_CLK_DLY); 46 } 47 48 phydev->supported = phydev->drv->features; 49 50 genphy_config_aneg(phydev); 51 genphy_restart_aneg(phydev); 52 53 return 0; 54 } 55 56 static int ar8035_config(struct phy_device *phydev) 57 { 58 int regval; 59 60 phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x0007); 61 phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016); 62 phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007); 63 regval = phy_read(phydev, MDIO_DEVAD_NONE, 0xe); 64 phy_write(phydev, MDIO_DEVAD_NONE, 0xe, (regval|0x0018)); 65 66 phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05); 67 regval = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e); 68 phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, (regval|0x0100)); 69 70 if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) || 71 (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) { 72 /* select debug reg 5 */ 73 phy_write(phydev, MDIO_DEVAD_NONE, 0x1D, 0x5); 74 /* enable tx delay */ 75 phy_write(phydev, MDIO_DEVAD_NONE, 0x1E, 0x0100); 76 } 77 78 if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) || 79 (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)) { 80 /* select debug reg 0 */ 81 phy_write(phydev, MDIO_DEVAD_NONE, 0x1D, 0x0); 82 /* enable rx delay */ 83 phy_write(phydev, MDIO_DEVAD_NONE, 0x1E, 0x8000); 84 } 85 86 phydev->supported = phydev->drv->features; 87 88 genphy_config_aneg(phydev); 89 genphy_restart_aneg(phydev); 90 91 return 0; 92 } 93 94 static struct phy_driver AR8021_driver = { 95 .name = "AR8021", 96 .uid = 0x4dd040, 97 .mask = 0x4ffff0, 98 .features = PHY_GBIT_FEATURES, 99 .config = ar8021_config, 100 .startup = genphy_startup, 101 .shutdown = genphy_shutdown, 102 }; 103 104 static struct phy_driver AR8031_driver = { 105 .name = "AR8031/AR8033", 106 .uid = 0x4dd074, 107 .mask = 0xffffffef, 108 .features = PHY_GBIT_FEATURES, 109 .config = ar8031_config, 110 .startup = genphy_startup, 111 .shutdown = genphy_shutdown, 112 }; 113 114 static struct phy_driver AR8035_driver = { 115 .name = "AR8035", 116 .uid = 0x4dd072, 117 .mask = 0xffffffef, 118 .features = PHY_GBIT_FEATURES, 119 .config = ar8035_config, 120 .startup = genphy_startup, 121 .shutdown = genphy_shutdown, 122 }; 123 124 int phy_atheros_init(void) 125 { 126 phy_register(&AR8021_driver); 127 phy_register(&AR8031_driver); 128 phy_register(&AR8035_driver); 129 130 return 0; 131 } 132