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