uboot/board/aristainetos/aristainetos-v1.c
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   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 <linux/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
  35struct 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
  48iomux_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
  53iomux_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
  58iomux_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
  81static 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
  88iomux_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
 101static 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
 111static 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
 117iomux_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
 124static 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
 156int 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
 162static 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
 174static void setup_iomux_uart(void)
 175{
 176        imx_iomux_v3_setup_multiple_pads(uart5_pads, ARRAY_SIZE(uart5_pads));
 177}
 178
 179int 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
 196static 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
 215error:
 216        puts("error init pwm for backlight\n");
 217        return;
 218}
 219
 220static 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
 237static void setup_iomux_gpio(void)
 238{
 239        imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads));
 240}
 241
 242int board_early_init_f(void)
 243{
 244        setup_iomux_uart();
 245        setup_iomux_gpio();
 246
 247        setup_display();
 248        return 0;
 249}
 250
 251
 252static 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
 261static 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
 277static void setup_board_spi(void)
 278{
 279}
 280