1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright 2010-2011 Freescale Semiconductor, Inc.
10 /* LXT971 Status 2 registers */
11 #define MIIM_LXT971_SR2 0x11 /* Status Register 2 */
12 #define MIIM_LXT971_SR2_SPEED_MASK 0x4200
13 #define MIIM_LXT971_SR2_10HDX 0x0000 /* 10 Mbit half duplex selected */
14 #define MIIM_LXT971_SR2_10FDX 0x0200 /* 10 Mbit full duplex selected */
15 #define MIIM_LXT971_SR2_100HDX 0x4000 /* 100 Mbit half duplex selected */
16 #define MIIM_LXT971_SR2_100FDX 0x4200 /* 100 Mbit full duplex selected */
20 static int lxt971_parse_status(struct phy_device *phydev)
25 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_LXT971_SR2);
26 speed = mii_reg & MIIM_LXT971_SR2_SPEED_MASK;
29 case MIIM_LXT971_SR2_10HDX:
30 phydev->speed = SPEED_10;
31 phydev->duplex = DUPLEX_HALF;
33 case MIIM_LXT971_SR2_10FDX:
34 phydev->speed = SPEED_10;
35 phydev->duplex = DUPLEX_FULL;
37 case MIIM_LXT971_SR2_100HDX:
38 phydev->speed = SPEED_100;
39 phydev->duplex = DUPLEX_HALF;
42 phydev->speed = SPEED_100;
43 phydev->duplex = DUPLEX_FULL;
49 static int lxt971_startup(struct phy_device *phydev)
53 ret = genphy_update_link(phydev);
57 return lxt971_parse_status(phydev);
60 static struct phy_driver LXT971_driver = {
64 .features = PHY_BASIC_FEATURES,
65 .config = &genphy_config_aneg,
66 .startup = &lxt971_startup,
67 .shutdown = &genphy_shutdown,
70 int phy_lxt_init(void)
72 phy_register(&LXT971_driver);