1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * LXT PHY drivers
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright 2010-2011 Freescale Semiconductor, Inc.
7*4882a593Smuzhiyun * author Andy Fleming
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun #include <phy.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun /* LXT971 Status 2 registers */
12*4882a593Smuzhiyun #define MIIM_LXT971_SR2 0x11 /* Status Register 2 */
13*4882a593Smuzhiyun #define MIIM_LXT971_SR2_SPEED_MASK 0x4200
14*4882a593Smuzhiyun #define MIIM_LXT971_SR2_10HDX 0x0000 /* 10 Mbit half duplex selected */
15*4882a593Smuzhiyun #define MIIM_LXT971_SR2_10FDX 0x0200 /* 10 Mbit full duplex selected */
16*4882a593Smuzhiyun #define MIIM_LXT971_SR2_100HDX 0x4000 /* 100 Mbit half duplex selected */
17*4882a593Smuzhiyun #define MIIM_LXT971_SR2_100FDX 0x4200 /* 100 Mbit full duplex selected */
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun /* LXT971 */
lxt971_parse_status(struct phy_device * phydev)21*4882a593Smuzhiyun static int lxt971_parse_status(struct phy_device *phydev)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun int mii_reg;
24*4882a593Smuzhiyun int speed;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_LXT971_SR2);
27*4882a593Smuzhiyun speed = mii_reg & MIIM_LXT971_SR2_SPEED_MASK;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun switch (speed) {
30*4882a593Smuzhiyun case MIIM_LXT971_SR2_10HDX:
31*4882a593Smuzhiyun phydev->speed = SPEED_10;
32*4882a593Smuzhiyun phydev->duplex = DUPLEX_HALF;
33*4882a593Smuzhiyun break;
34*4882a593Smuzhiyun case MIIM_LXT971_SR2_10FDX:
35*4882a593Smuzhiyun phydev->speed = SPEED_10;
36*4882a593Smuzhiyun phydev->duplex = DUPLEX_FULL;
37*4882a593Smuzhiyun break;
38*4882a593Smuzhiyun case MIIM_LXT971_SR2_100HDX:
39*4882a593Smuzhiyun phydev->speed = SPEED_100;
40*4882a593Smuzhiyun phydev->duplex = DUPLEX_HALF;
41*4882a593Smuzhiyun break;
42*4882a593Smuzhiyun default:
43*4882a593Smuzhiyun phydev->speed = SPEED_100;
44*4882a593Smuzhiyun phydev->duplex = DUPLEX_FULL;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun return 0;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
lxt971_startup(struct phy_device * phydev)50*4882a593Smuzhiyun static int lxt971_startup(struct phy_device *phydev)
51*4882a593Smuzhiyun {
52*4882a593Smuzhiyun int ret;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun ret = genphy_update_link(phydev);
55*4882a593Smuzhiyun if (ret)
56*4882a593Smuzhiyun return ret;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun return lxt971_parse_status(phydev);
59*4882a593Smuzhiyun }
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun static struct phy_driver LXT971_driver = {
62*4882a593Smuzhiyun .name = "LXT971",
63*4882a593Smuzhiyun .uid = 0x1378e0,
64*4882a593Smuzhiyun .mask = 0xfffff0,
65*4882a593Smuzhiyun .features = PHY_BASIC_FEATURES,
66*4882a593Smuzhiyun .config = &genphy_config_aneg,
67*4882a593Smuzhiyun .startup = &lxt971_startup,
68*4882a593Smuzhiyun .shutdown = &genphy_shutdown,
69*4882a593Smuzhiyun };
70*4882a593Smuzhiyun
phy_lxt_init(void)71*4882a593Smuzhiyun int phy_lxt_init(void)
72*4882a593Smuzhiyun {
73*4882a593Smuzhiyun phy_register(&LXT971_driver);
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun return 0;
76*4882a593Smuzhiyun }
77