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 * Copyright (C) 2015 Stefan Roese <sr@denx.de> 9 * 10 * SPDX-License-Identifier: GPL-2.0+ 11 */ 12 13 #include <asm/io.h> 14 #include <asm/arch/clock.h> 15 #include <asm/arch/mx6-pins.h> 16 #include <asm/arch/imx-regs.h> 17 #include <asm/arch/iomux.h> 18 #include <asm/arch/sys_proto.h> 19 #include <linux/errno.h> 20 #include <asm/gpio.h> 21 #include <asm/mach-imx/boot_mode.h> 22 #include <asm/mach-imx/mxc_i2c.h> 23 24 #include <common.h> 25 #include <fsl_esdhc.h> 26 #include <libfdt.h> 27 #include <malloc.h> 28 #include <i2c.h> 29 #include <micrel.h> 30 #include <miiphy.h> 31 #include <mmc.h> 32 #include <netdev.h> 33 34 #include "tqma6_bb.h" 35 36 /* UART */ 37 #define UART4_PAD_CTRL ( \ 38 PAD_CTL_HYS | \ 39 PAD_CTL_PUS_100K_UP | \ 40 PAD_CTL_PUE | \ 41 PAD_CTL_PKE | \ 42 PAD_CTL_SPEED_MED | \ 43 PAD_CTL_DSE_40ohm | \ 44 PAD_CTL_SRE_SLOW \ 45 ) 46 47 static iomux_v3_cfg_t const uart4_pads[] = { 48 NEW_PAD_CTRL(MX6_PAD_CSI0_DAT17__UART4_CTS_B, UART4_PAD_CTRL), 49 NEW_PAD_CTRL(MX6_PAD_CSI0_DAT16__UART4_RTS_B, UART4_PAD_CTRL), 50 NEW_PAD_CTRL(MX6_PAD_CSI0_DAT13__UART4_RX_DATA, UART4_PAD_CTRL), 51 NEW_PAD_CTRL(MX6_PAD_CSI0_DAT12__UART4_TX_DATA, UART4_PAD_CTRL), 52 }; 53 54 static void setup_iomuxc_uart4(void) 55 { 56 imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads)); 57 } 58 59 /* MMC */ 60 #define USDHC2_PAD_CTRL ( \ 61 PAD_CTL_HYS | \ 62 PAD_CTL_PUS_47K_UP | \ 63 PAD_CTL_SPEED_LOW | \ 64 PAD_CTL_DSE_80ohm | \ 65 PAD_CTL_SRE_FAST \ 66 ) 67 68 #define USDHC2_CLK_PAD_CTRL ( \ 69 PAD_CTL_HYS | \ 70 PAD_CTL_PUS_47K_UP | \ 71 PAD_CTL_SPEED_LOW | \ 72 PAD_CTL_DSE_40ohm | \ 73 PAD_CTL_SRE_FAST \ 74 ) 75 76 static iomux_v3_cfg_t const usdhc2_pads[] = { 77 NEW_PAD_CTRL(MX6_PAD_SD2_CLK__SD2_CLK, USDHC2_CLK_PAD_CTRL), 78 NEW_PAD_CTRL(MX6_PAD_SD2_CMD__SD2_CMD, USDHC2_PAD_CTRL), 79 NEW_PAD_CTRL(MX6_PAD_SD2_DAT0__SD2_DATA0, USDHC2_PAD_CTRL), 80 NEW_PAD_CTRL(MX6_PAD_SD2_DAT1__SD2_DATA1, USDHC2_PAD_CTRL), 81 NEW_PAD_CTRL(MX6_PAD_SD2_DAT2__SD2_DATA2, USDHC2_PAD_CTRL), 82 NEW_PAD_CTRL(MX6_PAD_SD2_DAT3__SD2_DATA3, USDHC2_PAD_CTRL), 83 84 NEW_PAD_CTRL(MX6_PAD_GPIO_4__GPIO1_IO04, USDHC2_PAD_CTRL), /* CD */ 85 NEW_PAD_CTRL(MX6_PAD_GPIO_2__SD2_WP, USDHC2_PAD_CTRL), /* WP */ 86 }; 87 88 #define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4) 89 #define USDHC2_WP_GPIO IMX_GPIO_NR(1, 2) 90 91 static struct fsl_esdhc_cfg usdhc2_cfg = { 92 .esdhc_base = USDHC2_BASE_ADDR, 93 .max_bus_width = 4, 94 }; 95 96 int tqma6_bb_board_mmc_getcd(struct mmc *mmc) 97 { 98 struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; 99 int ret = 0; 100 101 if (cfg->esdhc_base == USDHC2_BASE_ADDR) 102 ret = !gpio_get_value(USDHC2_CD_GPIO); 103 104 return ret; 105 } 106 107 int tqma6_bb_board_mmc_getwp(struct mmc *mmc) 108 { 109 struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; 110 int ret = 0; 111 112 if (cfg->esdhc_base == USDHC2_BASE_ADDR) 113 ret = gpio_get_value(USDHC2_WP_GPIO); 114 115 return ret; 116 } 117 118 int tqma6_bb_board_mmc_init(bd_t *bis) 119 { 120 int ret; 121 122 imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); 123 124 ret = gpio_request(USDHC2_CD_GPIO, "mmc-cd"); 125 if (!ret) 126 gpio_direction_input(USDHC2_CD_GPIO); 127 ret = gpio_request(USDHC2_WP_GPIO, "mmc-wp"); 128 if (!ret) 129 gpio_direction_input(USDHC2_WP_GPIO); 130 131 usdhc2_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); 132 if(fsl_esdhc_initialize(bis, &usdhc2_cfg)) 133 puts("WARNING: failed to initialize SD\n"); 134 135 return 0; 136 } 137 138 /* Ethernet */ 139 #define ENET_PAD_CTRL ( \ 140 PAD_CTL_HYS | \ 141 PAD_CTL_PUS_100K_UP | \ 142 PAD_CTL_PUE | \ 143 PAD_CTL_PKE | \ 144 PAD_CTL_SPEED_MED | \ 145 PAD_CTL_DSE_40ohm | \ 146 PAD_CTL_SRE_SLOW \ 147 ) 148 149 static iomux_v3_cfg_t const enet_pads[] = { 150 NEW_PAD_CTRL(MX6_PAD_ENET_MDC__ENET_MDC, ENET_PAD_CTRL), 151 NEW_PAD_CTRL(MX6_PAD_ENET_MDIO__ENET_MDIO, ENET_PAD_CTRL), 152 NEW_PAD_CTRL(MX6_PAD_GPIO_16__ENET_REF_CLK, ENET_PAD_CTRL), 153 NEW_PAD_CTRL(MX6_PAD_ENET_RXD0__ENET_RX_DATA0, ENET_PAD_CTRL), 154 NEW_PAD_CTRL(MX6_PAD_ENET_RXD1__ENET_RX_DATA1, ENET_PAD_CTRL), 155 NEW_PAD_CTRL(MX6_PAD_ENET_CRS_DV__ENET_RX_EN, ENET_PAD_CTRL), 156 NEW_PAD_CTRL(MX6_PAD_ENET_RX_ER__ENET_RX_ER, ENET_PAD_CTRL), 157 NEW_PAD_CTRL(MX6_PAD_ENET_TXD0__ENET_TX_DATA0, ENET_PAD_CTRL), 158 NEW_PAD_CTRL(MX6_PAD_ENET_TXD1__ENET_TX_DATA1, ENET_PAD_CTRL), 159 NEW_PAD_CTRL(MX6_PAD_ENET_TX_EN__ENET_TX_EN, ENET_PAD_CTRL), 160 NEW_PAD_CTRL(MX6_PAD_GPIO_19__ENET_TX_ER, ENET_PAD_CTRL), 161 162 /* ENET1 reset */ 163 NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, ENET_PAD_CTRL), 164 /* ENET1 interrupt */ 165 NEW_PAD_CTRL(MX6_PAD_GPIO_9__GPIO1_IO09, ENET_PAD_CTRL), 166 }; 167 168 #define ENET_PHY_RESET_GPIO IMX_GPIO_NR(1, 8) 169 170 static void setup_iomuxc_enet(void) 171 { 172 int ret; 173 174 imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads)); 175 176 /* Reset LAN8720 PHY */ 177 ret = gpio_request(ENET_PHY_RESET_GPIO, "phy-reset"); 178 if (!ret) 179 gpio_direction_output(ENET_PHY_RESET_GPIO , 0); 180 udelay(25000); 181 gpio_set_value(ENET_PHY_RESET_GPIO, 1); 182 } 183 184 int board_eth_init(bd_t *bis) 185 { 186 return cpu_eth_init(bis); 187 } 188 189 /* GPIO */ 190 #define GPIO_PAD_CTRL ( \ 191 PAD_CTL_HYS | \ 192 PAD_CTL_PUS_100K_UP | \ 193 PAD_CTL_PUE | \ 194 PAD_CTL_SPEED_MED | \ 195 PAD_CTL_DSE_40ohm | \ 196 PAD_CTL_SRE_SLOW \ 197 ) 198 199 #define GPIO_OD_PAD_CTRL ( \ 200 PAD_CTL_HYS | \ 201 PAD_CTL_PUS_100K_UP | \ 202 PAD_CTL_PUE | \ 203 PAD_CTL_ODE | \ 204 PAD_CTL_SPEED_MED | \ 205 PAD_CTL_DSE_40ohm | \ 206 PAD_CTL_SRE_SLOW \ 207 ) 208 209 static iomux_v3_cfg_t const gpio_pads[] = { 210 /* USB_H_PWR */ 211 NEW_PAD_CTRL(MX6_PAD_GPIO_0__GPIO1_IO00, GPIO_PAD_CTRL), 212 /* USB_OTG_PWR */ 213 NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, GPIO_PAD_CTRL), 214 /* PCIE_RST */ 215 NEW_PAD_CTRL(MX6_PAD_NANDF_CLE__GPIO6_IO07, GPIO_OD_PAD_CTRL), 216 /* UART1_PWRON */ 217 NEW_PAD_CTRL(MX6_PAD_DISP0_DAT14__GPIO5_IO08, GPIO_PAD_CTRL), 218 /* UART2_PWRON */ 219 NEW_PAD_CTRL(MX6_PAD_DISP0_DAT16__GPIO5_IO10, GPIO_PAD_CTRL), 220 /* UART3_PWRON */ 221 NEW_PAD_CTRL(MX6_PAD_DISP0_DAT18__GPIO5_IO12, GPIO_PAD_CTRL), 222 }; 223 224 #define GPIO_USB_H_PWR IMX_GPIO_NR(1, 0) 225 #define GPIO_USB_OTG_PWR IMX_GPIO_NR(3, 22) 226 #define GPIO_PCIE_RST IMX_GPIO_NR(6, 7) 227 #define GPIO_UART1_PWRON IMX_GPIO_NR(5, 8) 228 #define GPIO_UART2_PWRON IMX_GPIO_NR(5, 10) 229 #define GPIO_UART3_PWRON IMX_GPIO_NR(5, 12) 230 231 static void gpio_init(void) 232 { 233 int ret; 234 235 imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads)); 236 237 ret = gpio_request(GPIO_USB_H_PWR, "usb-h-pwr"); 238 if (!ret) 239 gpio_direction_output(GPIO_USB_H_PWR, 1); 240 ret = gpio_request(GPIO_USB_OTG_PWR, "usb-otg-pwr"); 241 if (!ret) 242 gpio_direction_output(GPIO_USB_OTG_PWR, 1); 243 ret = gpio_request(GPIO_PCIE_RST, "pcie-reset"); 244 if (!ret) 245 gpio_direction_output(GPIO_PCIE_RST, 1); 246 ret = gpio_request(GPIO_UART1_PWRON, "uart1-pwr"); 247 if (!ret) 248 gpio_direction_output(GPIO_UART1_PWRON, 0); 249 ret = gpio_request(GPIO_UART2_PWRON, "uart2-pwr"); 250 if (!ret) 251 gpio_direction_output(GPIO_UART2_PWRON, 0); 252 ret = gpio_request(GPIO_UART3_PWRON, "uart3-pwr"); 253 if (!ret) 254 gpio_direction_output(GPIO_UART3_PWRON, 0); 255 } 256 257 void tqma6_iomuxc_spi(void) 258 { 259 /* No SPI on this baseboard */ 260 } 261 262 int tqma6_bb_board_early_init_f(void) 263 { 264 setup_iomuxc_uart4(); 265 266 return 0; 267 } 268 269 int tqma6_bb_board_init(void) 270 { 271 setup_iomuxc_enet(); 272 273 gpio_init(); 274 275 /* Turn the UART-couplers on one-after-another */ 276 gpio_set_value(GPIO_UART1_PWRON, 1); 277 mdelay(10); 278 gpio_set_value(GPIO_UART2_PWRON, 1); 279 mdelay(10); 280 gpio_set_value(GPIO_UART3_PWRON, 1); 281 282 return 0; 283 } 284 285 int tqma6_bb_board_late_init(void) 286 { 287 return 0; 288 } 289 290 const char *tqma6_bb_get_boardname(void) 291 { 292 return "WRU-IV"; 293 } 294 295 static const struct boot_mode board_boot_modes[] = { 296 /* 4 bit bus width */ 297 {"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)}, 298 /* 8 bit bus width */ 299 {"emmc", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)}, 300 { NULL, 0 }, 301 }; 302 303 int misc_init_r(void) 304 { 305 add_board_boot_modes(board_boot_modes); 306 307 return 0; 308 } 309 310 #define WRU4_USB_H1_PWR IMX_GPIO_NR(1, 0) 311 #define WRU4_USB_OTG_PWR IMX_GPIO_NR(3, 22) 312 313 int board_ehci_hcd_init(int port) 314 { 315 int ret; 316 317 ret = gpio_request(WRU4_USB_H1_PWR, "usb-h1-pwr"); 318 if (!ret) 319 gpio_direction_output(WRU4_USB_H1_PWR, 1); 320 321 ret = gpio_request(WRU4_USB_OTG_PWR, "usb-OTG-pwr"); 322 if (!ret) 323 gpio_direction_output(WRU4_USB_OTG_PWR, 1); 324 325 return 0; 326 } 327 328 int board_ehci_power(int port, int on) 329 { 330 if (port) 331 gpio_set_value(WRU4_USB_OTG_PWR, on); 332 else 333 gpio_set_value(WRU4_USB_H1_PWR, on); 334 335 return 0; 336 } 337 338 /* 339 * Device Tree Support 340 */ 341 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) 342 void tqma6_bb_ft_board_setup(void *blob, bd_t *bd) 343 { 344 /* TBD */ 345 } 346 #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */ 347