1 /* 2 * Copyright (C) 2012 Freescale Semiconductor, Inc. 3 * Author: Fabio Estevam <fabio.estevam@freescale.com> 4 * 5 * Copyright (C) 2013, 2014 TQ Systems (ported SabreSD to TQMa6x) 6 * Author: Markus Niebel <markus.niebel@tq-group.com> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <asm/arch/clock.h> 12 #include <asm/arch/mx6-pins.h> 13 #include <asm/arch/imx-regs.h> 14 #include <asm/arch/iomux.h> 15 #include <asm/arch/sys_proto.h> 16 #include <linux/errno.h> 17 #include <asm/gpio.h> 18 #include <asm/io.h> 19 #include <asm/mach-imx/mxc_i2c.h> 20 #include <asm/mach-imx/spi.h> 21 #include <common.h> 22 #include <fsl_esdhc.h> 23 #include <libfdt.h> 24 #include <i2c.h> 25 #include <mmc.h> 26 #include <power/pfuze100_pmic.h> 27 #include <power/pmic.h> 28 #include <spi_flash.h> 29 30 #include "tqma6_bb.h" 31 32 DECLARE_GLOBAL_DATA_PTR; 33 34 #define USDHC_CLK_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \ 35 PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) 36 37 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \ 38 PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) 39 40 #define GPIO_OUT_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \ 41 PAD_CTL_DSE_40ohm | PAD_CTL_HYS) 42 43 #define GPIO_IN_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \ 44 PAD_CTL_DSE_40ohm | PAD_CTL_HYS) 45 46 #define SPI_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ 47 PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) 48 49 #define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ 50 PAD_CTL_DSE_80ohm | PAD_CTL_HYS | \ 51 PAD_CTL_ODE | PAD_CTL_SRE_FAST) 52 53 int dram_init(void) 54 { 55 gd->ram_size = imx_ddr_size(); 56 57 return 0; 58 } 59 60 static const uint16_t tqma6_emmc_dsr = 0x0100; 61 62 /* eMMC on USDHCI3 always present */ 63 static iomux_v3_cfg_t const tqma6_usdhc3_pads[] = { 64 NEW_PAD_CTRL(MX6_PAD_SD3_CLK__SD3_CLK, USDHC_PAD_CTRL), 65 NEW_PAD_CTRL(MX6_PAD_SD3_CMD__SD3_CMD, USDHC_PAD_CTRL), 66 NEW_PAD_CTRL(MX6_PAD_SD3_DAT0__SD3_DATA0, USDHC_PAD_CTRL), 67 NEW_PAD_CTRL(MX6_PAD_SD3_DAT1__SD3_DATA1, USDHC_PAD_CTRL), 68 NEW_PAD_CTRL(MX6_PAD_SD3_DAT2__SD3_DATA2, USDHC_PAD_CTRL), 69 NEW_PAD_CTRL(MX6_PAD_SD3_DAT3__SD3_DATA3, USDHC_PAD_CTRL), 70 NEW_PAD_CTRL(MX6_PAD_SD3_DAT4__SD3_DATA4, USDHC_PAD_CTRL), 71 NEW_PAD_CTRL(MX6_PAD_SD3_DAT5__SD3_DATA5, USDHC_PAD_CTRL), 72 NEW_PAD_CTRL(MX6_PAD_SD3_DAT6__SD3_DATA6, USDHC_PAD_CTRL), 73 NEW_PAD_CTRL(MX6_PAD_SD3_DAT7__SD3_DATA7, USDHC_PAD_CTRL), 74 /* eMMC reset */ 75 NEW_PAD_CTRL(MX6_PAD_SD3_RST__SD3_RESET, GPIO_OUT_PAD_CTRL), 76 }; 77 78 /* 79 * According to board_mmc_init() the following map is done: 80 * (U-Boot device node) (Physical Port) 81 * mmc0 eMMC (SD3) on TQMa6 82 * mmc1 .. n optional slots used on baseboard 83 */ 84 struct fsl_esdhc_cfg tqma6_usdhc_cfg = { 85 .esdhc_base = USDHC3_BASE_ADDR, 86 .max_bus_width = 8, 87 }; 88 89 int board_mmc_getcd(struct mmc *mmc) 90 { 91 struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; 92 int ret = 0; 93 94 if (cfg->esdhc_base == USDHC3_BASE_ADDR) 95 /* eMMC/uSDHC3 is always present */ 96 ret = 1; 97 else 98 ret = tqma6_bb_board_mmc_getcd(mmc); 99 100 return ret; 101 } 102 103 int board_mmc_getwp(struct mmc *mmc) 104 { 105 struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; 106 int ret = 0; 107 108 if (cfg->esdhc_base == USDHC3_BASE_ADDR) 109 /* eMMC/uSDHC3 is always present */ 110 ret = 0; 111 else 112 ret = tqma6_bb_board_mmc_getwp(mmc); 113 114 return ret; 115 } 116 117 int board_mmc_init(bd_t *bis) 118 { 119 imx_iomux_v3_setup_multiple_pads(tqma6_usdhc3_pads, 120 ARRAY_SIZE(tqma6_usdhc3_pads)); 121 tqma6_usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); 122 if (fsl_esdhc_initialize(bis, &tqma6_usdhc_cfg)) { 123 puts("Warning: failed to initialize eMMC dev\n"); 124 } else { 125 struct mmc *mmc = find_mmc_device(0); 126 if (mmc) 127 mmc_set_dsr(mmc, tqma6_emmc_dsr); 128 } 129 130 tqma6_bb_board_mmc_init(bis); 131 132 return 0; 133 } 134 135 static iomux_v3_cfg_t const tqma6_ecspi1_pads[] = { 136 /* SS1 */ 137 NEW_PAD_CTRL(MX6_PAD_EIM_D19__GPIO3_IO19, SPI_PAD_CTRL), 138 NEW_PAD_CTRL(MX6_PAD_EIM_D16__ECSPI1_SCLK, SPI_PAD_CTRL), 139 NEW_PAD_CTRL(MX6_PAD_EIM_D17__ECSPI1_MISO, SPI_PAD_CTRL), 140 NEW_PAD_CTRL(MX6_PAD_EIM_D18__ECSPI1_MOSI, SPI_PAD_CTRL), 141 }; 142 143 #define TQMA6_SF_CS_GPIO IMX_GPIO_NR(3, 19) 144 145 static unsigned const tqma6_ecspi1_cs[] = { 146 TQMA6_SF_CS_GPIO, 147 }; 148 149 __weak void tqma6_iomuxc_spi(void) 150 { 151 unsigned i; 152 153 for (i = 0; i < ARRAY_SIZE(tqma6_ecspi1_cs); ++i) 154 gpio_direction_output(tqma6_ecspi1_cs[i], 1); 155 imx_iomux_v3_setup_multiple_pads(tqma6_ecspi1_pads, 156 ARRAY_SIZE(tqma6_ecspi1_pads)); 157 } 158 159 int board_spi_cs_gpio(unsigned bus, unsigned cs) 160 { 161 return ((bus == CONFIG_SF_DEFAULT_BUS) && 162 (cs == CONFIG_SF_DEFAULT_CS)) ? TQMA6_SF_CS_GPIO : -1; 163 } 164 165 static struct i2c_pads_info tqma6_i2c3_pads = { 166 /* I2C3: on board LM75, M24C64, */ 167 .scl = { 168 .i2c_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_5__I2C3_SCL, 169 I2C_PAD_CTRL), 170 .gpio_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_5__GPIO1_IO05, 171 I2C_PAD_CTRL), 172 .gp = IMX_GPIO_NR(1, 5) 173 }, 174 .sda = { 175 .i2c_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_6__I2C3_SDA, 176 I2C_PAD_CTRL), 177 .gpio_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06, 178 I2C_PAD_CTRL), 179 .gp = IMX_GPIO_NR(1, 6) 180 } 181 }; 182 183 static void tqma6_setup_i2c(void) 184 { 185 int ret; 186 /* 187 * use logical index for bus, e.g. I2C1 -> 0 188 * warn on error 189 */ 190 ret = setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &tqma6_i2c3_pads); 191 if (ret) 192 printf("setup I2C3 failed: %d\n", ret); 193 } 194 195 int board_early_init_f(void) 196 { 197 return tqma6_bb_board_early_init_f(); 198 } 199 200 int board_init(void) 201 { 202 /* address of boot parameters */ 203 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 204 205 tqma6_iomuxc_spi(); 206 tqma6_setup_i2c(); 207 208 tqma6_bb_board_init(); 209 210 return 0; 211 } 212 213 static const char *tqma6_get_boardname(void) 214 { 215 u32 cpurev = get_cpu_rev(); 216 217 switch ((cpurev & 0xFF000) >> 12) { 218 case MXC_CPU_MX6SOLO: 219 return "TQMa6S"; 220 break; 221 case MXC_CPU_MX6DL: 222 return "TQMa6DL"; 223 break; 224 case MXC_CPU_MX6D: 225 return "TQMa6D"; 226 break; 227 case MXC_CPU_MX6Q: 228 return "TQMa6Q"; 229 break; 230 default: 231 return "??"; 232 }; 233 } 234 235 /* setup board specific PMIC */ 236 int power_init_board(void) 237 { 238 struct pmic *p; 239 u32 reg, rev; 240 241 power_pfuze100_init(TQMA6_PFUZE100_I2C_BUS); 242 p = pmic_get("PFUZE100"); 243 if (p && !pmic_probe(p)) { 244 pmic_reg_read(p, PFUZE100_DEVICEID, ®); 245 pmic_reg_read(p, PFUZE100_REVID, &rev); 246 printf("PMIC: PFUZE100 ID=0x%02x REV=0x%02x\n", reg, rev); 247 } 248 249 return 0; 250 } 251 252 int board_late_init(void) 253 { 254 setenv("board_name", tqma6_get_boardname()); 255 256 tqma6_bb_board_late_init(); 257 258 return 0; 259 } 260 261 int checkboard(void) 262 { 263 printf("Board: %s on a %s\n", tqma6_get_boardname(), 264 tqma6_bb_get_boardname()); 265 return 0; 266 } 267 268 /* 269 * Device Tree Support 270 */ 271 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) 272 #define MODELSTRLEN 32u 273 int ft_board_setup(void *blob, bd_t *bd) 274 { 275 char modelstr[MODELSTRLEN]; 276 277 snprintf(modelstr, MODELSTRLEN, "TQ %s on %s", tqma6_get_boardname(), 278 tqma6_bb_get_boardname()); 279 do_fixup_by_path_string(blob, "/", "model", modelstr); 280 fdt_fixup_memory(blob, (u64)PHYS_SDRAM, (u64)gd->ram_size); 281 /* bring in eMMC dsr settings */ 282 do_fixup_by_path_u32(blob, 283 "/soc/aips-bus@02100000/usdhc@02198000", 284 "dsr", tqma6_emmc_dsr, 2); 285 tqma6_bb_ft_board_setup(blob, bd); 286 287 return 0; 288 } 289 #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */ 290