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git01.mediatek.com / filogic / uboot / 860efed40132bf7ddc36ec6304eb594bb364c226 / . / drivers / net / phy / et1011c.c
blob: c243c5b72f819dd8459489d2765e16005adedd11 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -0400[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
Matt Porter3bbeb792013-03-20 05:38:13 +0000[diff] [blame]2/*
3 * ET1011C PHY driver
4 *
5 * Derived from Linux kernel driver by Chaithrika U S
6 * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/
Matt Porter3bbeb792013-03-20 05:38:13 +0000[diff] [blame]7 */
8#include <config.h>
9#include <phy.h>
10
11#define ET1011C_CONFIG_REG (0x16)
12#define ET1011C_TX_FIFO_MASK (0x3 << 12)
13#define ET1011C_TX_FIFO_DEPTH_8 (0x0 << 12)
14#define ET1011C_TX_FIFO_DEPTH_16 (0x1 << 12)
15#define ET1011C_INTERFACE_MASK (0x7 << 0)
16#define ET1011C_GMII_INTERFACE (0x2 << 0)
17#define ET1011C_SYS_CLK_EN (0x1 << 4)
18#define ET1011C_TX_CLK_EN (0x1 << 5)
19
20#define ET1011C_STATUS_REG (0x1A)
21#define ET1011C_DUPLEX_STATUS (0x1 << 7)
22#define ET1011C_SPEED_MASK (0x3 << 8)
23#define ET1011C_SPEED_1000 (0x2 << 8)
24#define ET1011C_SPEED_100 (0x1 << 8)
25#define ET1011C_SPEED_10 (0x0 << 8)
26
27static int et1011c_config(struct phy_device *phydev)
28{
29 int ctl = 0;
30 ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
31 if (ctl < 0)
32 return ctl;
33 ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |
34 BMCR_ANENABLE);
35 /* First clear the PHY */
36 phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl | BMCR_RESET);
37
38 return genphy_config_aneg(phydev);
39}
40
41static int et1011c_parse_status(struct phy_device *phydev)
42{
43 int mii_reg;
44 int speed;
45
46 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_STATUS_REG);
47
48 if (mii_reg & ET1011C_DUPLEX_STATUS)
49 phydev->duplex = DUPLEX_FULL;
50 else
51 phydev->duplex = DUPLEX_HALF;
52
53 speed = mii_reg & ET1011C_SPEED_MASK;
54 switch (speed) {
55 case ET1011C_SPEED_1000:
56 phydev->speed = SPEED_1000;
57 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG);
58 mii_reg &= ~ET1011C_TX_FIFO_MASK;
59 phy_write(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG,
60 mii_reg |
61 ET1011C_GMII_INTERFACE |
62 ET1011C_SYS_CLK_EN |
63#ifdef CONFIG_PHY_ET1011C_TX_CLK_FIX
64 ET1011C_TX_CLK_EN |
65#endif
66 ET1011C_TX_FIFO_DEPTH_16);
67 break;
68 case ET1011C_SPEED_100:
69 phydev->speed = SPEED_100;
70 break;
71 case ET1011C_SPEED_10:
72 phydev->speed = SPEED_10;
73 break;
74 }
75
76 return 0;
77}
78
79static int et1011c_startup(struct phy_device *phydev)
80{
Michal Simek5ff89662016-05-18 12:46:12 +0200[diff] [blame]81 int ret;
82
83 ret = genphy_update_link(phydev);
84 if (ret)
85 return ret;
86
87 return et1011c_parse_status(phydev);
Matt Porter3bbeb792013-03-20 05:38:13 +0000[diff] [blame]88}
89
90static struct phy_driver et1011c_driver = {
91 .name = "ET1011C",
92 .uid = 0x0282f014,
93 .mask = 0xfffffff0,
94 .features = PHY_GBIT_FEATURES,
95 .config = &et1011c_config,
96 .startup = &et1011c_startup,
97};
98
99int phy_et1011c_init(void)
100{
101 phy_register(&et1011c_driver);
102
103 return 0;
104}