1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * National Semiconductor PHY drivers
4 *
5 * Copyright 2010-2011 Freescale Semiconductor, Inc.
6 * author Andy Fleming
7 */
8 #include <common.h>
9 #include <phy.h>
10
11 /* NatSemi DP83630 */
12
13 #define DP83630_PHY_PAGESEL_REG 0x13
14 #define DP83630_PHY_PTP_COC_REG 0x14
15 #define DP83630_PHY_PTP_CLKOUT_EN (1<<15)
16 #define DP83630_PHY_RBR_REG 0x17
17
dp83630_config(struct phy_device * phydev)18 static int dp83630_config(struct phy_device *phydev)
19 {
20 int ptp_coc_reg;
21
22 phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET);
23 phy_write(phydev, MDIO_DEVAD_NONE, DP83630_PHY_PAGESEL_REG, 0x6);
24 ptp_coc_reg = phy_read(phydev, MDIO_DEVAD_NONE,
25 DP83630_PHY_PTP_COC_REG);
26 ptp_coc_reg &= ~DP83630_PHY_PTP_CLKOUT_EN;
27 phy_write(phydev, MDIO_DEVAD_NONE, DP83630_PHY_PTP_COC_REG,
28 ptp_coc_reg);
29 phy_write(phydev, MDIO_DEVAD_NONE, DP83630_PHY_PAGESEL_REG, 0);
30
31 genphy_config_aneg(phydev);
32
33 return 0;
34 }
35
36 static struct phy_driver DP83630_driver = {
37 .name = "NatSemi DP83630",
38 .uid = 0x20005ce1,
39 .mask = 0xfffffff0,
40 .features = PHY_BASIC_FEATURES,
41 .config = &dp83630_config,
42 .startup = &genphy_startup,
43 .shutdown = &genphy_shutdown,
44 };
45
46
47 /* DP83865 Link and Auto-Neg Status Register */
48 #define MIIM_DP83865_LANR 0x11
49 #define MIIM_DP83865_SPD_MASK 0x0018
50 #define MIIM_DP83865_SPD_1000 0x0010
51 #define MIIM_DP83865_SPD_100 0x0008
52 #define MIIM_DP83865_DPX_FULL 0x0002
53
54
55 /* NatSemi DP83865 */
dp838xx_config(struct phy_device * phydev)56 static int dp838xx_config(struct phy_device *phydev)
57 {
58 phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET);
59 genphy_config_aneg(phydev);
60
61 return 0;
62 }
63
dp83865_parse_status(struct phy_device * phydev)64 static int dp83865_parse_status(struct phy_device *phydev)
65 {
66 int mii_reg;
67
68 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_DP83865_LANR);
69
70 switch (mii_reg & MIIM_DP83865_SPD_MASK) {
71
72 case MIIM_DP83865_SPD_1000:
73 phydev->speed = SPEED_1000;
74 break;
75
76 case MIIM_DP83865_SPD_100:
77 phydev->speed = SPEED_100;
78 break;
79
80 default:
81 phydev->speed = SPEED_10;
82 break;
83
84 }
85
86 if (mii_reg & MIIM_DP83865_DPX_FULL)
87 phydev->duplex = DUPLEX_FULL;
88 else
89 phydev->duplex = DUPLEX_HALF;
90
91 return 0;
92 }
93
dp83865_startup(struct phy_device * phydev)94 static int dp83865_startup(struct phy_device *phydev)
95 {
96 int ret;
97
98 ret = genphy_update_link(phydev);
99 if (ret)
100 return ret;
101
102 return dp83865_parse_status(phydev);
103 }
104
105
106 static struct phy_driver DP83865_driver = {
107 .name = "NatSemi DP83865",
108 .uid = 0x20005c70,
109 .mask = 0xfffffff0,
110 .features = PHY_GBIT_FEATURES,
111 .config = &dp838xx_config,
112 .startup = &dp83865_startup,
113 .shutdown = &genphy_shutdown,
114 };
115
116 /* NatSemi DP83848 */
dp83848_parse_status(struct phy_device * phydev)117 static int dp83848_parse_status(struct phy_device *phydev)
118 {
119 int mii_reg;
120
121 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
122
123 if(mii_reg & (BMSR_100FULL | BMSR_100HALF)) {
124 phydev->speed = SPEED_100;
125 } else {
126 phydev->speed = SPEED_10;
127 }
128
129 if (mii_reg & (BMSR_10FULL | BMSR_100FULL)) {
130 phydev->duplex = DUPLEX_FULL;
131 } else {
132 phydev->duplex = DUPLEX_HALF;
133 }
134
135 return 0;
136 }
137
dp83848_startup(struct phy_device * phydev)138 static int dp83848_startup(struct phy_device *phydev)
139 {
140 int ret;
141
142 ret = genphy_update_link(phydev);
143 if (ret)
144 return ret;
145
146 return dp83848_parse_status(phydev);
147 }
148
149 static struct phy_driver DP83848_driver = {
150 .name = "NatSemi DP83848",
151 .uid = 0x20005c90,
152 .mask = 0x2000ff90,
153 .features = PHY_BASIC_FEATURES,
154 .config = &dp838xx_config,
155 .startup = &dp83848_startup,
156 .shutdown = &genphy_shutdown,
157 };
158
phy_natsemi_init(void)159 int phy_natsemi_init(void)
160 {
161 phy_register(&DP83630_driver);
162 phy_register(&DP83865_driver);
163 phy_register(&DP83848_driver);
164
165 return 0;
166 }
167