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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 2b8a04e55191748f32fc422ca8dfc9976d3c6331 / . / drivers / net / phy / et1011c.c
blob: 70c15e2f20c9fe63778d7c2e6caa481e9e556035 [file] [log] [blame]
Matt Porterf485c8a2013-03-20 05:38:13 +0000[diff] [blame]1/*
2 * ET1011C PHY driver
3 *
4 * Derived from Linux kernel driver by Chaithrika U S
5 * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/
6 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame]7 * SPDX-License-Identifier: GPL-2.0+
Matt Porterf485c8a2013-03-20 05:38:13 +0000[diff] [blame]8 */
9#include <config.h>
10#include <phy.h>
11
12#define ET1011C_CONFIG_REG (0x16)
13#define ET1011C_TX_FIFO_MASK (0x3 << 12)
14#define ET1011C_TX_FIFO_DEPTH_8 (0x0 << 12)
15#define ET1011C_TX_FIFO_DEPTH_16 (0x1 << 12)
16#define ET1011C_INTERFACE_MASK (0x7 << 0)
17#define ET1011C_GMII_INTERFACE (0x2 << 0)
18#define ET1011C_SYS_CLK_EN (0x1 << 4)
19#define ET1011C_TX_CLK_EN (0x1 << 5)
20
21#define ET1011C_STATUS_REG (0x1A)
22#define ET1011C_DUPLEX_STATUS (0x1 << 7)
23#define ET1011C_SPEED_MASK (0x3 << 8)
24#define ET1011C_SPEED_1000 (0x2 << 8)
25#define ET1011C_SPEED_100 (0x1 << 8)
26#define ET1011C_SPEED_10 (0x0 << 8)
27
28static int et1011c_config(struct phy_device *phydev)
29{
30 int ctl = 0;
31 ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
32 if (ctl < 0)
33 return ctl;
34 ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |
35 BMCR_ANENABLE);
36 /* First clear the PHY */
37 phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl | BMCR_RESET);
38
39 return genphy_config_aneg(phydev);
40}
41
42static int et1011c_parse_status(struct phy_device *phydev)
43{
44 int mii_reg;
45 int speed;
46
47 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_STATUS_REG);
48
49 if (mii_reg & ET1011C_DUPLEX_STATUS)
50 phydev->duplex = DUPLEX_FULL;
51 else
52 phydev->duplex = DUPLEX_HALF;
53
54 speed = mii_reg & ET1011C_SPEED_MASK;
55 switch (speed) {
56 case ET1011C_SPEED_1000:
57 phydev->speed = SPEED_1000;
58 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG);
59 mii_reg &= ~ET1011C_TX_FIFO_MASK;
60 phy_write(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG,
61 mii_reg |
62 ET1011C_GMII_INTERFACE |
63 ET1011C_SYS_CLK_EN |
64#ifdef CONFIG_PHY_ET1011C_TX_CLK_FIX
65 ET1011C_TX_CLK_EN |
66#endif
67 ET1011C_TX_FIFO_DEPTH_16);
68 break;
69 case ET1011C_SPEED_100:
70 phydev->speed = SPEED_100;
71 break;
72 case ET1011C_SPEED_10:
73 phydev->speed = SPEED_10;
74 break;
75 }
76
77 return 0;
78}
79
80static int et1011c_startup(struct phy_device *phydev)
81{
82 genphy_update_link(phydev);
83 et1011c_parse_status(phydev);
84 return 0;
85}
86
87static struct phy_driver et1011c_driver = {
88 .name = "ET1011C",
89 .uid = 0x0282f014,
90 .mask = 0xfffffff0,
91 .features = PHY_GBIT_FEATURES,
92 .config = &et1011c_config,
93 .startup = &et1011c_startup,
94};
95
96int phy_et1011c_init(void)
97{
98 phy_register(&et1011c_driver);
99
100 return 0;
101}