1 /* 2 * (C) Copyright 2015 3 * Heiko Schocher, DENX Software Engineering, hs@denx.de. 4 * 5 * Based on: 6 * Copyright (C) 2012 Freescale Semiconductor, Inc. 7 * 8 * Author: Fabio Estevam <fabio.estevam@freescale.com> 9 * 10 * SPDX-License-Identifier: GPL-2.0+ 11 */ 12 13 #include <asm/arch/clock.h> 14 #include <asm/arch/imx-regs.h> 15 #include <asm/arch/iomux.h> 16 #include <asm/arch/mx6-pins.h> 17 #include <asm/errno.h> 18 #include <asm/gpio.h> 19 #include <asm/imx-common/iomux-v3.h> 20 #include <asm/imx-common/boot_mode.h> 21 #include <asm/imx-common/mxc_i2c.h> 22 #include <asm/imx-common/video.h> 23 #include <mmc.h> 24 #include <fsl_esdhc.h> 25 #include <miiphy.h> 26 #include <netdev.h> 27 #include <asm/arch/mxc_hdmi.h> 28 #include <asm/arch/crm_regs.h> 29 #include <linux/fb.h> 30 #include <ipu_pixfmt.h> 31 #include <asm/io.h> 32 #include <asm/arch/sys_proto.h> 33 #include <pwm.h> 34 35 struct i2c_pads_info i2c_pad_info3 = { 36 .scl = { 37 .i2c_mode = MX6_PAD_EIM_D17__I2C3_SCL | PC, 38 .gpio_mode = MX6_PAD_EIM_D17__GPIO3_IO17 | PC, 39 .gp = IMX_GPIO_NR(3, 17) 40 }, 41 .sda = { 42 .i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC, 43 .gpio_mode = MX6_PAD_EIM_D18__GPIO3_IO18 | PC, 44 .gp = IMX_GPIO_NR(3, 18) 45 } 46 }; 47 48 iomux_v3_cfg_t const uart1_pads[] = { 49 MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), 50 MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), 51 }; 52 53 iomux_v3_cfg_t const uart5_pads[] = { 54 MX6_PAD_CSI0_DAT14__UART5_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), 55 MX6_PAD_CSI0_DAT15__UART5_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), 56 }; 57 58 iomux_v3_cfg_t const gpio_pads[] = { 59 /* LED enable */ 60 MX6_PAD_SD4_DAT5__GPIO2_IO13 | MUX_PAD_CTRL(NO_PAD_CTRL), 61 /* spi flash WP protect */ 62 MX6_PAD_SD4_DAT7__GPIO2_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL), 63 /* backlight enable */ 64 MX6_PAD_GPIO_2__GPIO1_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL), 65 /* LED yellow */ 66 MX6_PAD_GPIO_3__GPIO1_IO03 | MUX_PAD_CTRL(NO_PAD_CTRL), 67 /* LED red */ 68 MX6_PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL), 69 /* LED green */ 70 MX6_PAD_GPIO_5__GPIO1_IO05 | MUX_PAD_CTRL(NO_PAD_CTRL), 71 /* LED blue */ 72 MX6_PAD_GPIO_6__GPIO1_IO06 | MUX_PAD_CTRL(NO_PAD_CTRL), 73 /* i2c4 scl */ 74 MX6_PAD_GPIO_7__GPIO1_IO07 | MUX_PAD_CTRL(NO_PAD_CTRL), 75 /* i2c4 sda */ 76 MX6_PAD_GPIO_8__GPIO1_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL), 77 /* spi CS 1 */ 78 MX6_PAD_EIM_A25__GPIO5_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL), 79 }; 80 81 static iomux_v3_cfg_t const misc_pads[] = { 82 MX6_PAD_GPIO_1__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL), 83 /* OTG Power enable */ 84 MX6_PAD_EIM_D31__GPIO3_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL), 85 MX6_PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL), 86 }; 87 88 iomux_v3_cfg_t const enet_pads[] = { 89 MX6_PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(0x4001b0a8), 90 MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL), 91 MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL), 92 MX6_PAD_ENET_TXD0__ENET_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL), 93 MX6_PAD_ENET_TXD1__ENET_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL), 94 MX6_PAD_ENET_TX_EN__ENET_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL), 95 MX6_PAD_ENET_RX_ER__ENET_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL), 96 MX6_PAD_ENET_RXD0__ENET_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL), 97 MX6_PAD_ENET_RXD1__ENET_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL), 98 MX6_PAD_ENET_CRS_DV__ENET_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL), 99 }; 100 101 static void setup_iomux_enet(void) 102 { 103 struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR; 104 105 imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads)); 106 107 /* set GPIO_16 as ENET_REF_CLK_OUT */ 108 setbits_le32(&iomux->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK); 109 } 110 111 static iomux_v3_cfg_t const backlight_pads[] = { 112 MX6_PAD_GPIO_9__PWM1_OUT | MUX_PAD_CTRL(NO_PAD_CTRL), 113 MX6_PAD_SD4_DAT1__PWM3_OUT | MUX_PAD_CTRL(NO_PAD_CTRL), 114 MX6_PAD_GPIO_2__GPIO1_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL), 115 }; 116 117 iomux_v3_cfg_t const ecspi4_pads[] = { 118 MX6_PAD_EIM_D21__ECSPI4_SCLK | MUX_PAD_CTRL(NO_PAD_CTRL), 119 MX6_PAD_EIM_D22__ECSPI4_MISO | MUX_PAD_CTRL(NO_PAD_CTRL), 120 MX6_PAD_EIM_D28__ECSPI4_MOSI | MUX_PAD_CTRL(NO_PAD_CTRL), 121 MX6_PAD_EIM_D20__GPIO3_IO20 | MUX_PAD_CTRL(NO_PAD_CTRL), 122 }; 123 124 static iomux_v3_cfg_t const display_pads[] = { 125 MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK | MUX_PAD_CTRL(DISP_PAD_CTRL), 126 MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15, 127 MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02, 128 MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03, 129 MX6_PAD_DI0_PIN4__GPIO4_IO20, 130 MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00, 131 MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01, 132 MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02, 133 MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03, 134 MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04, 135 MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05, 136 MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06, 137 MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07, 138 MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08, 139 MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09, 140 MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10, 141 MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11, 142 MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12, 143 MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13, 144 MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14, 145 MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15, 146 MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16, 147 MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17, 148 MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18, 149 MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19, 150 MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20, 151 MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21, 152 MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22, 153 MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23, 154 }; 155 156 int board_spi_cs_gpio(unsigned bus, unsigned cs) 157 { 158 return (bus == CONFIG_SF_DEFAULT_BUS && cs == CONFIG_SF_DEFAULT_CS) 159 ? (IMX_GPIO_NR(3, 20)) : -1; 160 } 161 162 static void setup_spi(void) 163 { 164 int i; 165 166 imx_iomux_v3_setup_multiple_pads(ecspi4_pads, ARRAY_SIZE(ecspi4_pads)); 167 for (i = 0; i < 3; i++) 168 enable_spi_clk(true, i); 169 170 /* set cs1 to high */ 171 gpio_direction_output(ECSPI4_CS1, 1); 172 } 173 174 static void setup_iomux_uart(void) 175 { 176 imx_iomux_v3_setup_multiple_pads(uart5_pads, ARRAY_SIZE(uart5_pads)); 177 } 178 179 int board_eth_init(bd_t *bis) 180 { 181 struct iomuxc *iomuxc_regs = 182 (struct iomuxc *)IOMUXC_BASE_ADDR; 183 int ret; 184 185 /* clear gpr1[14], gpr1[18:17] to select anatop clock */ 186 clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC_MASK, 0); 187 188 ret = enable_fec_anatop_clock(0, ENET_50MHZ); 189 if (ret) 190 return ret; 191 192 setup_iomux_enet(); 193 return cpu_eth_init(bis); 194 } 195 196 static void enable_lvds(struct display_info_t const *dev) 197 { 198 imx_iomux_v3_setup_multiple_pads( 199 display_pads, 200 ARRAY_SIZE(display_pads)); 201 imx_iomux_v3_setup_multiple_pads( 202 backlight_pads, 203 ARRAY_SIZE(backlight_pads)); 204 205 /* enable backlight PWM 3 */ 206 if (pwm_init(2, 0, 0)) 207 goto error; 208 /* duty cycle 500ns, period: 3000ns */ 209 if (pwm_config(2, 500, 3000)) 210 goto error; 211 if (pwm_enable(2)) 212 goto error; 213 return; 214 215 error: 216 puts("error init pwm for backlight\n"); 217 return; 218 } 219 220 static void setup_display(void) 221 { 222 struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; 223 int reg; 224 225 enable_ipu_clock(); 226 227 reg = readl(&mxc_ccm->cs2cdr); 228 /* select pll 5 clock */ 229 reg &= MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK; 230 reg &= MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK; 231 writel(reg, &mxc_ccm->cs2cdr); 232 233 imx_iomux_v3_setup_multiple_pads(backlight_pads, 234 ARRAY_SIZE(backlight_pads)); 235 } 236 237 static void setup_iomux_gpio(void) 238 { 239 imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads)); 240 } 241 242 int board_early_init_f(void) 243 { 244 setup_iomux_uart(); 245 setup_iomux_gpio(); 246 247 setup_display(); 248 return 0; 249 } 250 251 252 static void setup_i2c4(void) 253 { 254 /* i2c4 not used, set it to gpio input */ 255 gpio_request(IMX_GPIO_NR(1, 7), "i2c4_scl"); 256 gpio_direction_input(IMX_GPIO_NR(1, 7)); 257 gpio_request(IMX_GPIO_NR(1, 8), "i2c4_sda"); 258 gpio_direction_input(IMX_GPIO_NR(1, 8)); 259 } 260 261 static void setup_board_gpio(void) 262 { 263 /* enable LED */ 264 gpio_request(IMX_GPIO_NR(2, 13), "LED ena"); 265 gpio_direction_output(IMX_GPIO_NR(2, 13), 0); 266 267 gpio_request(IMX_GPIO_NR(1, 3), "LED yellow"); 268 gpio_direction_output(IMX_GPIO_NR(1, 3), 1); 269 gpio_request(IMX_GPIO_NR(1, 4), "LED red"); 270 gpio_direction_output(IMX_GPIO_NR(1, 4), 1); 271 gpio_request(IMX_GPIO_NR(1, 5), "LED green"); 272 gpio_direction_output(IMX_GPIO_NR(1, 5), 1); 273 gpio_request(IMX_GPIO_NR(1, 6), "LED blue"); 274 gpio_direction_output(IMX_GPIO_NR(1, 6), 1); 275 } 276 277 static void setup_board_spi(void) 278 { 279 } 280