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 68 static void status_led_set(struct led *led) 69 { 70 clrsetbits_le32(led->reg, led->mask, led->value); 71 } 72 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 } 142 143 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 */ 169 void reset_phy(void) 170 { 171 } 172 #endif 173 174 #ifdef CONFIG_MV88E61XX_SWITCH 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 191 int misc_init_r(void) 192 { 193 status_led_set(&green_flash); 194 195 return 0; 196 } 197 #endif 198