1 /*
2 * Micrel PHY drivers
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 *
6 * Copyright 2010-2011 Freescale Semiconductor, Inc.
7 * author Andy Fleming
8 * (C) 2012 NetModule AG, David Andrey, added KSZ9031
9 */
10 #include <config.h>
11 #include <common.h>
12 #include <dm.h>
13 #include <errno.h>
14 #include <fdtdec.h>
15 #include <micrel.h>
16 #include <phy.h>
17
18 DECLARE_GLOBAL_DATA_PTR;
19
20 static struct phy_driver KSZ804_driver = {
21 .name = "Micrel KSZ804",
22 .uid = 0x221510,
23 .mask = 0xfffff0,
24 .features = PHY_BASIC_FEATURES,
25 .config = &genphy_config,
26 .startup = &genphy_startup,
27 .shutdown = &genphy_shutdown,
28 };
29
30 #define MII_KSZPHY_OMSO 0x16
31 #define KSZPHY_OMSO_B_CAST_OFF (1 << 9)
32
ksz_genconfig_bcastoff(struct phy_device * phydev)33 static int ksz_genconfig_bcastoff(struct phy_device *phydev)
34 {
35 int ret;
36
37 ret = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO);
38 if (ret < 0)
39 return ret;
40
41 ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO,
42 ret | KSZPHY_OMSO_B_CAST_OFF);
43 if (ret < 0)
44 return ret;
45
46 return genphy_config(phydev);
47 }
48
49 static struct phy_driver KSZ8031_driver = {
50 .name = "Micrel KSZ8021/KSZ8031",
51 .uid = 0x221550,
52 .mask = 0xfffff0,
53 .features = PHY_BASIC_FEATURES,
54 .config = &ksz_genconfig_bcastoff,
55 .startup = &genphy_startup,
56 .shutdown = &genphy_shutdown,
57 };
58
59 /**
60 * KSZ8051
61 */
62 #define MII_KSZ8051_PHY_OMSO 0x16
63 #define MII_KSZ8051_PHY_OMSO_NAND_TREE_ON (1 << 5)
64
ksz8051_config(struct phy_device * phydev)65 static int ksz8051_config(struct phy_device *phydev)
66 {
67 unsigned val;
68
69 /* Disable NAND-tree */
70 val = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZ8051_PHY_OMSO);
71 val &= ~MII_KSZ8051_PHY_OMSO_NAND_TREE_ON;
72 phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZ8051_PHY_OMSO, val);
73
74 return genphy_config(phydev);
75 }
76
77 static struct phy_driver KSZ8051_driver = {
78 .name = "Micrel KSZ8051",
79 .uid = 0x221550,
80 .mask = 0xfffff0,
81 .features = PHY_BASIC_FEATURES,
82 .config = &ksz8051_config,
83 .startup = &genphy_startup,
84 .shutdown = &genphy_shutdown,
85 };
86
87 static struct phy_driver KSZ8081_driver = {
88 .name = "Micrel KSZ8081",
89 .uid = 0x221560,
90 .mask = 0xfffff0,
91 .features = PHY_BASIC_FEATURES,
92 .config = &ksz_genconfig_bcastoff,
93 .startup = &genphy_startup,
94 .shutdown = &genphy_shutdown,
95 };
96
97 /**
98 * KSZ8895
99 */
100
smireg_to_phy(unsigned short reg)101 static unsigned short smireg_to_phy(unsigned short reg)
102 {
103 return ((reg & 0xc0) >> 3) + 0x06 + ((reg & 0x20) >> 5);
104 }
105
smireg_to_reg(unsigned short reg)106 static unsigned short smireg_to_reg(unsigned short reg)
107 {
108 return reg & 0x1F;
109 }
110
ksz8895_write_smireg(struct phy_device * phydev,int smireg,int val)111 static void ksz8895_write_smireg(struct phy_device *phydev, int smireg, int val)
112 {
113 phydev->bus->write(phydev->bus, smireg_to_phy(smireg), MDIO_DEVAD_NONE,
114 smireg_to_reg(smireg), val);
115 }
116
117 #if 0
118 static int ksz8895_read_smireg(struct phy_device *phydev, int smireg)
119 {
120 return phydev->bus->read(phydev->bus, smireg_to_phy(smireg),
121 MDIO_DEVAD_NONE, smireg_to_reg(smireg));
122 }
123 #endif
124
ksz8895_config(struct phy_device * phydev)125 int ksz8895_config(struct phy_device *phydev)
126 {
127 /* we are connected directly to the switch without
128 * dedicated PHY. SCONF1 == 001 */
129 phydev->link = 1;
130 phydev->duplex = DUPLEX_FULL;
131 phydev->speed = SPEED_100;
132
133 /* Force the switch to start */
134 ksz8895_write_smireg(phydev, 1, 1);
135
136 return 0;
137 }
138
ksz8895_startup(struct phy_device * phydev)139 static int ksz8895_startup(struct phy_device *phydev)
140 {
141 return 0;
142 }
143
144 static struct phy_driver ksz8895_driver = {
145 .name = "Micrel KSZ8895/KSZ8864",
146 .uid = 0x221450,
147 .mask = 0xffffe1,
148 .features = PHY_BASIC_FEATURES,
149 .config = &ksz8895_config,
150 .startup = &ksz8895_startup,
151 .shutdown = &genphy_shutdown,
152 };
153
154 /* Micrel used the exact same part number for the KSZ9021. */
155 static struct phy_driver KS8721_driver = {
156 .name = "Micrel KS8721BL",
157 .uid = 0x221610,
158 .mask = 0xfffff0,
159 .features = PHY_BASIC_FEATURES,
160 .config = &genphy_config,
161 .startup = &genphy_startup,
162 .shutdown = &genphy_shutdown,
163 };
164
ksz886x_config(struct phy_device * phydev)165 int ksz886x_config(struct phy_device *phydev)
166 {
167 /* we are connected directly to the switch without
168 * dedicated PHY. */
169 phydev->link = 1;
170 phydev->duplex = DUPLEX_FULL;
171 phydev->speed = SPEED_100;
172 return 0;
173 }
174
ksz886x_startup(struct phy_device * phydev)175 static int ksz886x_startup(struct phy_device *phydev)
176 {
177 return 0;
178 }
179
180 static struct phy_driver ksz886x_driver = {
181 .name = "Micrel KSZ886x Switch",
182 .uid = 0x00221430,
183 .mask = 0xfffff0,
184 .features = PHY_BASIC_FEATURES,
185 .config = &ksz886x_config,
186 .startup = &ksz886x_startup,
187 .shutdown = &genphy_shutdown,
188 };
189
phy_micrel_ksz8xxx_init(void)190 int phy_micrel_ksz8xxx_init(void)
191 {
192 phy_register(&KSZ804_driver);
193 phy_register(&KSZ8031_driver);
194 phy_register(&KSZ8051_driver);
195 phy_register(&KSZ8081_driver);
196 phy_register(&KS8721_driver);
197 phy_register(&ksz8895_driver);
198 phy_register(&ksz886x_driver);
199 return 0;
200 }
201