Merge tag 'u-boot-at91-2022.07-a' of https://source.denx.de/u-boot/custodians/u-boot...
[platform/kernel/u-boot.git] / drivers / net / phy / micrel_ksz8xxx.c
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 #include <linux/bitops.h>
16
17 static struct phy_driver KSZ804_driver = {
18         .name = "Micrel KSZ804",
19         .uid = 0x221510,
20         .mask = 0xfffff0,
21         .features = PHY_BASIC_FEATURES,
22         .config = &genphy_config,
23         .startup = &genphy_startup,
24         .shutdown = &genphy_shutdown,
25 };
26
27 #define MII_KSZPHY_OMSO         0x16
28 #define KSZPHY_OMSO_FACTORY_TEST BIT(15)
29 #define KSZPHY_OMSO_B_CAST_OFF  (1 << 9)
30
31 static int ksz_genconfig_bcastoff(struct phy_device *phydev)
32 {
33         int ret;
34
35         ret = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO);
36         if (ret < 0)
37                 return ret;
38
39         ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO,
40                         ret | KSZPHY_OMSO_B_CAST_OFF);
41         if (ret < 0)
42                 return ret;
43
44         return genphy_config(phydev);
45 }
46
47 static struct phy_driver KSZ8031_driver = {
48         .name = "Micrel KSZ8021/KSZ8031",
49         .uid = 0x221550,
50         .mask = 0xfffff0,
51         .features = PHY_BASIC_FEATURES,
52         .config = &ksz_genconfig_bcastoff,
53         .startup = &genphy_startup,
54         .shutdown = &genphy_shutdown,
55 };
56
57 /**
58  * KSZ8051
59  */
60 #define MII_KSZ8051_PHY_OMSO                    0x16
61 #define MII_KSZ8051_PHY_OMSO_NAND_TREE_ON       (1 << 5)
62
63 static int ksz8051_config(struct phy_device *phydev)
64 {
65         unsigned val;
66
67         /* Disable NAND-tree */
68         val = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZ8051_PHY_OMSO);
69         val &= ~MII_KSZ8051_PHY_OMSO_NAND_TREE_ON;
70         phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZ8051_PHY_OMSO, val);
71
72         return genphy_config(phydev);
73 }
74
75 static struct phy_driver KSZ8051_driver = {
76         .name = "Micrel KSZ8051",
77         .uid = 0x221550,
78         .mask = 0xfffff0,
79         .features = PHY_BASIC_FEATURES,
80         .config = &ksz8051_config,
81         .startup = &genphy_startup,
82         .shutdown = &genphy_shutdown,
83 };
84
85 static int ksz8061_config(struct phy_device *phydev)
86 {
87         return phy_write(phydev, MDIO_MMD_PMAPMD, MDIO_DEVID1, 0xB61A);
88 }
89
90 static struct phy_driver KSZ8061_driver = {
91         .name = "Micrel KSZ8061",
92         .uid = 0x00221570,
93         .mask = 0xfffff0,
94         .features = PHY_BASIC_FEATURES,
95         .config = &ksz8061_config,
96         .startup = &genphy_startup,
97         .shutdown = &genphy_shutdown,
98 };
99
100 static int ksz8081_config(struct phy_device *phydev)
101 {
102         int ret;
103
104         ret = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO);
105         if (ret < 0)
106                 return ret;
107
108         ret &= ~KSZPHY_OMSO_FACTORY_TEST;
109
110         ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO,
111                         ret | KSZPHY_OMSO_B_CAST_OFF);
112         if (ret < 0)
113                 return ret;
114
115         return genphy_config(phydev);
116 }
117
118 static struct phy_driver KSZ8081_driver = {
119         .name = "Micrel KSZ8081",
120         .uid = 0x221560,
121         .mask = 0xfffff0,
122         .features = PHY_BASIC_FEATURES,
123         .config = &ksz8081_config,
124         .startup = &genphy_startup,
125         .shutdown = &genphy_shutdown,
126 };
127
128 /**
129  * KSZ8895
130  */
131
132 static unsigned short smireg_to_phy(unsigned short reg)
133 {
134         return ((reg & 0xc0) >> 3) + 0x06 + ((reg & 0x20) >> 5);
135 }
136
137 static unsigned short smireg_to_reg(unsigned short reg)
138 {
139         return reg & 0x1F;
140 }
141
142 static void ksz8895_write_smireg(struct phy_device *phydev, int smireg, int val)
143 {
144         phydev->bus->write(phydev->bus, smireg_to_phy(smireg), MDIO_DEVAD_NONE,
145                                                 smireg_to_reg(smireg), val);
146 }
147
148 #if 0
149 static int ksz8895_read_smireg(struct phy_device *phydev, int smireg)
150 {
151         return phydev->bus->read(phydev->bus, smireg_to_phy(smireg),
152                                         MDIO_DEVAD_NONE, smireg_to_reg(smireg));
153 }
154 #endif
155
156 int ksz8895_config(struct phy_device *phydev)
157 {
158         /* we are connected directly to the switch without
159          * dedicated PHY. SCONF1 == 001 */
160         phydev->link = 1;
161         phydev->duplex = DUPLEX_FULL;
162         phydev->speed = SPEED_100;
163
164         /* Force the switch to start */
165         ksz8895_write_smireg(phydev, 1, 1);
166
167         return 0;
168 }
169
170 static int ksz8895_startup(struct phy_device *phydev)
171 {
172         return 0;
173 }
174
175 static struct phy_driver ksz8895_driver = {
176         .name = "Micrel KSZ8895/KSZ8864",
177         .uid  = 0x221450,
178         .mask = 0xffffe1,
179         .features = PHY_BASIC_FEATURES,
180         .config   = &ksz8895_config,
181         .startup  = &ksz8895_startup,
182         .shutdown = &genphy_shutdown,
183 };
184
185 /* Micrel used the exact same model number for the KSZ9021,
186  * so the revision number is used to distinguish them.
187  */
188 static struct phy_driver KS8721_driver = {
189         .name = "Micrel KS8721BL",
190         .uid = 0x221618,
191         .mask = 0xfffffc,
192         .features = PHY_BASIC_FEATURES,
193         .config = &genphy_config,
194         .startup = &genphy_startup,
195         .shutdown = &genphy_shutdown,
196 };
197
198 int ksz886x_config(struct phy_device *phydev)
199 {
200         /* we are connected directly to the switch without
201          * dedicated PHY. */
202         phydev->link = 1;
203         phydev->duplex = DUPLEX_FULL;
204         phydev->speed = SPEED_100;
205         return 0;
206 }
207
208 static int ksz886x_startup(struct phy_device *phydev)
209 {
210         return 0;
211 }
212
213 static struct phy_driver ksz886x_driver = {
214         .name = "Micrel KSZ886x Switch",
215         .uid  = 0x00221430,
216         .mask = 0xfffff0,
217         .features = PHY_BASIC_FEATURES,
218         .config = &ksz886x_config,
219         .startup = &ksz886x_startup,
220         .shutdown = &genphy_shutdown,
221 };
222
223 int phy_micrel_ksz8xxx_init(void)
224 {
225         phy_register(&KSZ804_driver);
226         phy_register(&KSZ8031_driver);
227         phy_register(&KSZ8051_driver);
228         phy_register(&KSZ8061_driver);
229         phy_register(&KSZ8081_driver);
230         phy_register(&KS8721_driver);
231         phy_register(&ksz8895_driver);
232         phy_register(&ksz886x_driver);
233         return 0;
234 }