1 /* 2 * Copyright (C) 2013 Freescale Semiconductor, Inc. 3 * 4 * Author: Fabio Estevam <fabio.estevam@freescale.com> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <asm/arch/clock.h> 10 #include <asm/arch/imx-regs.h> 11 #include <asm/arch/iomux.h> 12 #include <malloc.h> 13 #include <asm/arch/mx6-pins.h> 14 #include <linux/errno.h> 15 #include <asm/gpio.h> 16 #include <asm/imx-common/iomux-v3.h> 17 #include <asm/imx-common/sata.h> 18 #include <mmc.h> 19 #include <fsl_esdhc.h> 20 #include <asm/arch/crm_regs.h> 21 #include <asm/io.h> 22 #include <asm/arch/sys_proto.h> 23 #include <micrel.h> 24 #include <miiphy.h> 25 #include <netdev.h> 26 27 DECLARE_GLOBAL_DATA_PTR; 28 29 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 30 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ 31 PAD_CTL_SRE_FAST | PAD_CTL_HYS) 32 33 #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 34 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) 35 36 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \ 37 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ 38 PAD_CTL_SRE_FAST | PAD_CTL_HYS) 39 40 #define WDT_EN IMX_GPIO_NR(5, 4) 41 #define WDT_TRG IMX_GPIO_NR(3, 19) 42 43 int dram_init(void) 44 { 45 gd->ram_size = imx_ddr_size(); 46 47 return 0; 48 } 49 50 static iomux_v3_cfg_t const uart2_pads[] = { 51 IOMUX_PADS(PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), 52 IOMUX_PADS(PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), 53 }; 54 55 static iomux_v3_cfg_t const usdhc3_pads[] = { 56 IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 57 IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 58 IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 59 IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 60 IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 61 IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 62 }; 63 64 static iomux_v3_cfg_t const wdog_pads[] = { 65 IOMUX_PADS(PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)), 66 IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19), 67 }; 68 69 int mx6_rgmii_rework(struct phy_device *phydev) 70 { 71 /* 72 * Bug: Apparently uDoo does not works with Gigabit switches... 73 * Limiting speed to 10/100Mbps, and setting master mode, seems to 74 * be the only way to have a successfull PHY auto negotiation. 75 * How to fix: Understand why Linux kernel do not have this issue. 76 */ 77 phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 0x1c00); 78 79 /* control data pad skew - devaddr = 0x02, register = 0x04 */ 80 ksz9031_phy_extended_write(phydev, 0x02, 81 MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW, 82 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); 83 /* rx data pad skew - devaddr = 0x02, register = 0x05 */ 84 ksz9031_phy_extended_write(phydev, 0x02, 85 MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW, 86 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); 87 /* tx data pad skew - devaddr = 0x02, register = 0x05 */ 88 ksz9031_phy_extended_write(phydev, 0x02, 89 MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW, 90 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); 91 /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */ 92 ksz9031_phy_extended_write(phydev, 0x02, 93 MII_KSZ9031_EXT_RGMII_CLOCK_SKEW, 94 MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF); 95 return 0; 96 } 97 98 static iomux_v3_cfg_t const enet_pads1[] = { 99 IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)), 100 IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 101 IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 102 IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 103 IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 104 IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 105 IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 106 IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)), 107 IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL)), 108 IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 109 /* RGMII reset */ 110 IOMUX_PADS(PAD_EIM_D23__GPIO3_IO23 | MUX_PAD_CTRL(NO_PAD_CTRL)), 111 /* Ethernet power supply */ 112 IOMUX_PADS(PAD_EIM_EB3__GPIO2_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)), 113 /* pin 32 - 1 - (MODE0) all */ 114 IOMUX_PADS(PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL)), 115 /* pin 31 - 1 - (MODE1) all */ 116 IOMUX_PADS(PAD_RGMII_RD1__GPIO6_IO27 | MUX_PAD_CTRL(NO_PAD_CTRL)), 117 /* pin 28 - 1 - (MODE2) all */ 118 IOMUX_PADS(PAD_RGMII_RD2__GPIO6_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL)), 119 /* pin 27 - 1 - (MODE3) all */ 120 IOMUX_PADS(PAD_RGMII_RD3__GPIO6_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL)), 121 /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */ 122 IOMUX_PADS(PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL)), 123 }; 124 125 static iomux_v3_cfg_t const enet_pads2[] = { 126 IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 127 IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 128 IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 129 IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 130 IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)), 131 }; 132 133 static void setup_iomux_enet(void) 134 { 135 SETUP_IOMUX_PADS(enet_pads1); 136 udelay(20); 137 gpio_direction_output(IMX_GPIO_NR(2, 31), 1); /* Power supply on */ 138 139 gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* assert PHY rst */ 140 141 gpio_direction_output(IMX_GPIO_NR(6, 24), 1); 142 gpio_direction_output(IMX_GPIO_NR(6, 25), 1); 143 gpio_direction_output(IMX_GPIO_NR(6, 27), 1); 144 gpio_direction_output(IMX_GPIO_NR(6, 28), 1); 145 gpio_direction_output(IMX_GPIO_NR(6, 29), 1); 146 udelay(1000); 147 148 gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* deassert PHY rst */ 149 150 /* Need 100ms delay to exit from reset. */ 151 udelay(1000 * 100); 152 153 gpio_free(IMX_GPIO_NR(6, 24)); 154 gpio_free(IMX_GPIO_NR(6, 25)); 155 gpio_free(IMX_GPIO_NR(6, 27)); 156 gpio_free(IMX_GPIO_NR(6, 28)); 157 gpio_free(IMX_GPIO_NR(6, 29)); 158 159 SETUP_IOMUX_PADS(enet_pads2); 160 } 161 162 static void setup_iomux_uart(void) 163 { 164 SETUP_IOMUX_PADS(uart2_pads); 165 } 166 167 static void setup_iomux_wdog(void) 168 { 169 SETUP_IOMUX_PADS(wdog_pads); 170 gpio_direction_output(WDT_TRG, 0); 171 gpio_direction_output(WDT_EN, 1); 172 gpio_direction_input(WDT_TRG); 173 } 174 175 static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR }; 176 177 int board_mmc_getcd(struct mmc *mmc) 178 { 179 return 1; /* Always present */ 180 } 181 182 int board_eth_init(bd_t *bis) 183 { 184 uint32_t base = IMX_FEC_BASE; 185 struct mii_dev *bus = NULL; 186 struct phy_device *phydev = NULL; 187 int ret; 188 189 setup_iomux_enet(); 190 191 #ifdef CONFIG_FEC_MXC 192 bus = fec_get_miibus(base, -1); 193 if (!bus) 194 return -EINVAL; 195 /* scan phy 4,5,6,7 */ 196 phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII); 197 198 if (!phydev) { 199 ret = -EINVAL; 200 goto free_bus; 201 } 202 printf("using phy at %d\n", phydev->addr); 203 ret = fec_probe(bis, -1, base, bus, phydev); 204 if (ret) 205 goto free_phydev; 206 #endif 207 return 0; 208 209 free_phydev: 210 free(phydev); 211 free_bus: 212 free(bus); 213 return ret; 214 } 215 216 int board_mmc_init(bd_t *bis) 217 { 218 SETUP_IOMUX_PADS(usdhc3_pads); 219 usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); 220 usdhc_cfg.max_bus_width = 4; 221 222 return fsl_esdhc_initialize(bis, &usdhc_cfg); 223 } 224 225 int board_early_init_f(void) 226 { 227 setup_iomux_wdog(); 228 setup_iomux_uart(); 229 230 return 0; 231 } 232 233 int board_phy_config(struct phy_device *phydev) 234 { 235 mx6_rgmii_rework(phydev); 236 if (phydev->drv->config) 237 phydev->drv->config(phydev); 238 239 return 0; 240 } 241 242 int board_init(void) 243 { 244 /* address of boot parameters */ 245 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 246 247 #ifdef CONFIG_CMD_SATA 248 if (is_cpu_type(MXC_CPU_MX6Q)) 249 setup_sata(); 250 #endif 251 return 0; 252 } 253 254 int board_late_init(void) 255 { 256 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 257 if (is_cpu_type(MXC_CPU_MX6Q)) 258 setenv("board_rev", "MX6Q"); 259 else 260 setenv("board_rev", "MX6DL"); 261 #endif 262 return 0; 263 } 264 265 int checkboard(void) 266 { 267 if (is_cpu_type(MXC_CPU_MX6Q)) 268 puts("Board: Udoo Quad\n"); 269 else 270 puts("Board: Udoo DualLite\n"); 271 272 return 0; 273 } 274