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