1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2010, 2018
4 * Allied Telesis <www.alliedtelesis.com>
5 */
6
7 #include <common.h>
8 #include <linux/io.h>
9 #include <miiphy.h>
10 #include <netdev.h>
11 #include <asm/arch/cpu.h>
12 #include <asm/arch/soc.h>
13 #include <asm/arch/mpp.h>
14 #include <asm/arch/gpio.h>
15
16 /* Note: GPIO differences between specific boards
17 *
18 * We're trying to avoid having multiple build targets for all the Kirkwood
19 * based boards one area where things tend to differ is GPIO usage. For the
20 * most part the GPIOs driven by the bootloader are similar enough in function
21 * that there is no harm in driving them.
22 *
23 * XZ4 XS6 XS16 GS24A GT40 GP24A GT24A
24 * GPIO39 - INT(<) NC MUX_RST_N(>) NC POE_DIS_N(>) NC
25 */
26
27 #define SBX81LIFKW_OE_LOW ~(BIT(31) | BIT(30) | BIT(28) | BIT(27) | \
28 BIT(18) | BIT(17) | BIT(13) | BIT(12) | \
29 BIT(10))
30 #define SBX81LIFKW_OE_HIGH ~(BIT(0) | BIT(1) | BIT(7))
31 #define SBX81LIFKW_OE_VAL_LOW (BIT(31) | BIT(30) | BIT(28) | BIT(27))
32 #define SBX81LIFKW_OE_VAL_HIGH (BIT(0) | BIT(1))
33
34 #define MV88E6097_RESET 27
35
36 DECLARE_GLOBAL_DATA_PTR;
37
38 struct led {
39 u32 reg;
40 u32 value;
41 u32 mask;
42 };
43
44 struct led amber_solid = {
45 MVEBU_GPIO0_BASE,
46 BIT(10),
47 BIT(18) | BIT(10)
48 };
49
50 struct led green_solid = {
51 MVEBU_GPIO0_BASE,
52 BIT(18) | BIT(10),
53 BIT(18) | BIT(10)
54 };
55
56 struct led amber_flash = {
57 MVEBU_GPIO0_BASE,
58 0,
59 BIT(18) | BIT(10)
60 };
61
62 struct led green_flash = {
63 MVEBU_GPIO0_BASE,
64 BIT(18),
65 BIT(18) | BIT(10)
66 };
67
status_led_set(struct led * led)68 static void status_led_set(struct led *led)
69 {
70 clrsetbits_le32(led->reg, led->mask, led->value);
71 }
72
board_early_init_f(void)73 int board_early_init_f(void)
74 {
75 /*
76 * default gpio configuration
77 * There are maximum 64 gpios controlled through 2 sets of registers
78 * the below configuration configures mainly initial LED status
79 */
80 mvebu_config_gpio(SBX81LIFKW_OE_VAL_LOW,
81 SBX81LIFKW_OE_VAL_HIGH,
82 SBX81LIFKW_OE_LOW, SBX81LIFKW_OE_HIGH);
83
84 /* Multi-Purpose Pins Functionality configuration */
85 static const u32 kwmpp_config[] = {
86 MPP0_SPI_SCn,
87 MPP1_SPI_MOSI,
88 MPP2_SPI_SCK,
89 MPP3_SPI_MISO,
90 MPP4_UART0_RXD,
91 MPP5_UART0_TXD,
92 MPP6_SYSRST_OUTn,
93 MPP7_PEX_RST_OUTn,
94 MPP8_TW_SDA,
95 MPP9_TW_SCK,
96 MPP10_GPO,
97 MPP11_GPIO,
98 MPP12_GPO,
99 MPP13_GPIO,
100 MPP14_GPIO,
101 MPP15_UART0_RTS,
102 MPP16_UART0_CTS,
103 MPP17_GPIO,
104 MPP18_GPO,
105 MPP19_GPO,
106 MPP20_GPIO,
107 MPP21_GPIO,
108 MPP22_GPIO,
109 MPP23_GPIO,
110 MPP24_GPIO,
111 MPP25_GPIO,
112 MPP26_GPIO,
113 MPP27_GPIO,
114 MPP28_GPIO,
115 MPP29_GPIO,
116 MPP30_GPIO,
117 MPP31_GPIO,
118 MPP32_GPIO,
119 MPP33_GPIO,
120 MPP34_GPIO,
121 MPP35_GPIO,
122 MPP36_GPIO,
123 MPP37_GPIO,
124 MPP38_GPIO,
125 MPP39_GPIO,
126 MPP40_GPIO,
127 MPP41_GPIO,
128 MPP42_GPIO,
129 MPP43_GPIO,
130 MPP44_GPIO,
131 MPP45_GPIO,
132 MPP46_GPIO,
133 MPP47_GPIO,
134 MPP48_GPIO,
135 MPP49_GPIO,
136 0
137 };
138
139 kirkwood_mpp_conf(kwmpp_config, NULL);
140 return 0;
141 }
142
board_init(void)143 int board_init(void)
144 {
145 /* Power-down unused subsystems. The required
146 * subsystems are:
147 *
148 * GE0 b0
149 * PEX0 PHY b1
150 * PEX0.0 b2
151 * TSU b5
152 * SDRAM b6
153 * RUNIT b7
154 */
155 writel((BIT(0) | BIT(1) | BIT(2) |
156 BIT(5) | BIT(6) | BIT(7)),
157 KW_CPU_REG_BASE + 0x1c);
158
159 /* address of boot parameters */
160 gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
161
162 status_led_set(&amber_solid);
163
164 return 0;
165 }
166
167 #ifdef CONFIG_RESET_PHY_R
168 /* automatically defined by kirkwood config.h */
reset_phy(void)169 void reset_phy(void)
170 {
171 }
172 #endif
173
174 #ifdef CONFIG_MV88E61XX_SWITCH
mv88e61xx_hw_reset(struct phy_device * phydev)175 int mv88e61xx_hw_reset(struct phy_device *phydev)
176 {
177 /* Ensure the 88e6097 gets at least 10ms Reset
178 */
179 kw_gpio_set_value(MV88E6097_RESET, 0);
180 mdelay(20);
181 kw_gpio_set_value(MV88E6097_RESET, 1);
182 mdelay(20);
183
184 phydev->advertising = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
185
186 return 0;
187 }
188 #endif
189
190 #ifdef CONFIG_MISC_INIT_R
misc_init_r(void)191 int misc_init_r(void)
192 {
193 status_led_set(&green_flash);
194
195 return 0;
196 }
197 #endif
198