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