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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2014 Eukréa Electromatique
- * Author: Eric Bénard <eric@eukrea.com>
- * Fabio Estevam <fabio.estevam@freescale.com>
- * Jon Nettleton <jon.nettleton@gmail.com>
- *
- * based on sabresd.c which is :
- * Copyright (C) 2012 Freescale Semiconductor, Inc.
- * and on hummingboard.c which is :
- * Copyright (C) 2013 SolidRun ltd.
- * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>.
- */
- #include <common.h>
- #include <init.h>
- #include <net.h>
- #include <asm/arch/clock.h>
- #include <asm/arch/sys_proto.h>
- #include <asm/arch/imx-regs.h>
- #include <asm/arch/iomux.h>
- #include <asm/arch/mx6-pins.h>
- #include <asm/global_data.h>
- #include <linux/delay.h>
- #include <linux/errno.h>
- #include <asm/gpio.h>
- #include <asm/mach-imx/iomux-v3.h>
- #include <asm/mach-imx/boot_mode.h>
- #include <asm/mach-imx/mxc_i2c.h>
- #include <asm/mach-imx/spi.h>
- #include <asm/mach-imx/video.h>
- #include <i2c.h>
- #include <input.h>
- #include <miiphy.h>
- #include <netdev.h>
- #include <asm/arch/mxc_hdmi.h>
- #include <asm/arch/crm_regs.h>
- #include <linux/fb.h>
- #include <ipu_pixfmt.h>
- #include <asm/io.h>
- DECLARE_GLOBAL_DATA_PTR;
- #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
- PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
- PAD_CTL_SRE_FAST | PAD_CTL_HYS)
- #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
- PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
- PAD_CTL_SRE_FAST | PAD_CTL_HYS)
- #define USDHC_PAD_CLK_CTRL (PAD_CTL_SPEED_LOW | \
- PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | \
- PAD_CTL_HYS)
- #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
- PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
- #define ENET_PAD_CTRL_PD (PAD_CTL_PUS_100K_DOWN | \
- PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
- #define ENET_PAD_CTRL_CLK ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) | \
- PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
- #define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
- PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
- PAD_CTL_ODE | PAD_CTL_SRE_FAST)
- #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
- PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
- static int board_type = -1;
- #define BOARD_IS_MARSBOARD 0
- #define BOARD_IS_RIOTBOARD 1
- int dram_init(void)
- {
- gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
- return 0;
- }
- static iomux_v3_cfg_t const uart2_pads[] = {
- MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
- MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
- };
- static void setup_iomux_uart(void)
- {
- imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
- }
- iomux_v3_cfg_t const enet_pads[] = {
- /* AR8035 PHY Reset */
- MX6_PAD_EIM_D31__GPIO3_IO31 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
- /* AR8035 PHY Interrupt */
- MX6_PAD_ENET_TX_EN__GPIO1_IO28 | MUX_PAD_CTRL(ENET_PAD_CTRL),
- };
- static void setup_iomux_enet(void)
- {
- imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
- /* Reset AR8035 PHY */
- gpio_direction_output(IMX_GPIO_NR(3, 31) , 0);
- mdelay(2);
- gpio_set_value(IMX_GPIO_NR(3, 31), 1);
- }
- int mx6_rgmii_rework(struct phy_device *phydev)
- {
- /* from linux/arch/arm/mach-imx/mach-imx6q.c :
- * Ar803x phy SmartEEE feature cause link status generates glitch,
- * which cause ethernet link down/up issue, so disable SmartEEE
- */
- phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
- phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x805d);
- phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4003);
- return 0;
- }
- int board_phy_config(struct phy_device *phydev)
- {
- mx6_rgmii_rework(phydev);
- if (phydev->drv->config)
- phydev->drv->config(phydev);
- return 0;
- }
- #ifdef CONFIG_MXC_SPI
- iomux_v3_cfg_t const ecspi1_pads[] = {
- MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
- MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
- MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
- MX6_PAD_EIM_EB2__GPIO2_IO30 | MUX_PAD_CTRL(NO_PAD_CTRL),
- };
- int board_spi_cs_gpio(unsigned bus, unsigned cs)
- {
- return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(2, 30)) : -1;
- }
- static void setup_spi(void)
- {
- imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
- }
- #endif
- struct i2c_pads_info i2c_pad_info1 = {
- .scl = {
- .i2c_mode = MX6_PAD_CSI0_DAT9__I2C1_SCL
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gpio_mode = MX6_PAD_CSI0_DAT9__GPIO5_IO27
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gp = IMX_GPIO_NR(5, 27)
- },
- .sda = {
- .i2c_mode = MX6_PAD_CSI0_DAT8__I2C1_SDA
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gpio_mode = MX6_PAD_CSI0_DAT8__GPIO5_IO26
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gp = IMX_GPIO_NR(5, 26)
- }
- };
- struct i2c_pads_info i2c_pad_info2 = {
- .scl = {
- .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gp = IMX_GPIO_NR(4, 12)
- },
- .sda = {
- .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gp = IMX_GPIO_NR(4, 13)
- }
- };
- struct i2c_pads_info i2c_pad_info3 = {
- .scl = {
- .i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gp = IMX_GPIO_NR(1, 5)
- },
- .sda = {
- .i2c_mode = MX6_PAD_GPIO_6__I2C3_SDA
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gpio_mode = MX6_PAD_GPIO_6__GPIO1_IO06
- | MUX_PAD_CTRL(I2C_PAD_CTRL),
- .gp = IMX_GPIO_NR(1, 6)
- }
- };
- iomux_v3_cfg_t const tft_pads_riot[] = {
- /* LCD_PWR_EN */
- MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
- /* TOUCH_INT */
- MX6_PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
- /* LED_PWR_EN */
- MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
- /* BL LEVEL */
- MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
- };
- iomux_v3_cfg_t const tft_pads_mars[] = {
- /* LCD_PWR_EN */
- MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
- /* TOUCH_INT */
- MX6_PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
- /* LED_PWR_EN */
- MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
- /* BL LEVEL (PWM4) */
- MX6_PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
- };
- #if defined(CONFIG_VIDEO_IPUV3)
- static void enable_lvds(struct display_info_t const *dev)
- {
- struct iomuxc *iomux = (struct iomuxc *)
- IOMUXC_BASE_ADDR;
- setbits_le32(&iomux->gpr[2],
- IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT);
- /* set backlight level to ON */
- if (board_type == BOARD_IS_RIOTBOARD)
- gpio_direction_output(IMX_GPIO_NR(1, 18) , 1);
- else if (board_type == BOARD_IS_MARSBOARD)
- gpio_direction_output(IMX_GPIO_NR(2, 10) , 1);
- }
- static void disable_lvds(struct display_info_t const *dev)
- {
- struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
- /* set backlight level to OFF */
- if (board_type == BOARD_IS_RIOTBOARD)
- gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
- else if (board_type == BOARD_IS_MARSBOARD)
- gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
- clrbits_le32(&iomux->gpr[2],
- IOMUXC_GPR2_LVDS_CH0_MODE_MASK);
- }
- static void do_enable_hdmi(struct display_info_t const *dev)
- {
- disable_lvds(dev);
- imx_enable_hdmi_phy();
- }
- static int detect_i2c(struct display_info_t const *dev)
- {
- return (0 == i2c_set_bus_num(dev->bus)) &&
- (0 == i2c_probe(dev->addr));
- }
- struct display_info_t const displays[] = {{
- .bus = -1,
- .addr = 0,
- .pixfmt = IPU_PIX_FMT_RGB24,
- .detect = detect_hdmi,
- .enable = do_enable_hdmi,
- .mode = {
- .name = "HDMI",
- .refresh = 60,
- .xres = 1024,
- .yres = 768,
- .pixclock = 15385,
- .left_margin = 220,
- .right_margin = 40,
- .upper_margin = 21,
- .lower_margin = 7,
- .hsync_len = 60,
- .vsync_len = 10,
- .sync = FB_SYNC_EXT,
- .vmode = FB_VMODE_NONINTERLACED
- } }, {
- .bus = 2,
- .addr = 0x1,
- .pixfmt = IPU_PIX_FMT_LVDS666,
- .detect = detect_i2c,
- .enable = enable_lvds,
- .mode = {
- .name = "LCD8000-97C",
- .refresh = 60,
- .xres = 1024,
- .yres = 768,
- .pixclock = 15385,
- .left_margin = 100,
- .right_margin = 200,
- .upper_margin = 10,
- .lower_margin = 20,
- .hsync_len = 20,
- .vsync_len = 8,
- .sync = FB_SYNC_EXT,
- .vmode = FB_VMODE_NONINTERLACED
- } } };
- size_t display_count = ARRAY_SIZE(displays);
- static void setup_display(void)
- {
- struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
- struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
- int reg;
- enable_ipu_clock();
- imx_setup_hdmi();
- /* Turn on LDB0, IPU,IPU DI0 clocks */
- setbits_le32(&mxc_ccm->CCGR3,
- MXC_CCM_CCGR3_LDB_DI0_MASK);
- /* set LDB0 clk select to 011/011 */
- clrsetbits_le32(&mxc_ccm->cs2cdr,
- MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK,
- (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET));
- setbits_le32(&mxc_ccm->cscmr2,
- MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
- setbits_le32(&mxc_ccm->chsccdr,
- (CHSCCDR_CLK_SEL_LDB_DI0
- << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET));
- reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
- | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
- | IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
- | IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
- | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
- | IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
- | IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
- | IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
- writel(reg, &iomux->gpr[2]);
- clrsetbits_le32(&iomux->gpr[3],
- IOMUXC_GPR3_LVDS0_MUX_CTL_MASK |
- IOMUXC_GPR3_HDMI_MUX_CTL_MASK,
- IOMUXC_GPR3_MUX_SRC_IPU1_DI0
- << IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
- }
- #endif /* CONFIG_VIDEO_IPUV3 */
- /*
- * Do not overwrite the console
- * Use always serial for U-Boot console
- */
- int overwrite_console(void)
- {
- return 1;
- }
- int board_early_init_f(void)
- {
- u32 cputype = cpu_type(get_cpu_rev());
- switch (cputype) {
- case MXC_CPU_MX6SOLO:
- board_type = BOARD_IS_RIOTBOARD;
- break;
- case MXC_CPU_MX6D:
- board_type = BOARD_IS_MARSBOARD;
- break;
- }
- setup_iomux_uart();
- if (board_type == BOARD_IS_RIOTBOARD)
- imx_iomux_v3_setup_multiple_pads(
- tft_pads_riot, ARRAY_SIZE(tft_pads_riot));
- else if (board_type == BOARD_IS_MARSBOARD)
- imx_iomux_v3_setup_multiple_pads(
- tft_pads_mars, ARRAY_SIZE(tft_pads_mars));
- #if defined(CONFIG_VIDEO_IPUV3)
- /* power ON LCD */
- gpio_direction_output(IMX_GPIO_NR(1, 29) , 1);
- /* touch interrupt is an input */
- gpio_direction_input(IMX_GPIO_NR(6, 14));
- /* power ON backlight */
- gpio_direction_output(IMX_GPIO_NR(6, 15) , 1);
- /* set backlight level to off */
- if (board_type == BOARD_IS_RIOTBOARD)
- gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
- else if (board_type == BOARD_IS_MARSBOARD)
- gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
- setup_display();
- #endif
- return 0;
- }
- int board_init(void)
- {
- /* address of boot parameters */
- gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
- /* i2c1 : PMIC, Audio codec on RiOT, Expansion connector on MarS */
- setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
- /* i2c2 : HDMI EDID */
- setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
- /* i2c3 : LVDS, Expansion connector */
- setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info3);
- #ifdef CONFIG_MXC_SPI
- setup_spi();
- #endif
- return 0;
- }
- #ifdef CONFIG_CMD_BMODE
- static const struct boot_mode riotboard_boot_modes[] = {
- {"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
- {"sd3", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
- {"emmc", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
- {NULL, 0},
- };
- static const struct boot_mode marsboard_boot_modes[] = {
- {"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
- {"emmc", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
- {NULL, 0},
- };
- #endif
- int board_late_init(void)
- {
- #ifdef CONFIG_CMD_BMODE
- if (board_type == BOARD_IS_RIOTBOARD)
- add_board_boot_modes(riotboard_boot_modes);
- else if (board_type == BOARD_IS_RIOTBOARD)
- add_board_boot_modes(marsboard_boot_modes);
- #endif
- setup_iomux_enet();
- return 0;
- }
- int checkboard(void)
- {
- puts("Board: ");
- if (board_type == BOARD_IS_MARSBOARD)
- puts("MarSBoard\n");
- else if (board_type == BOARD_IS_RIOTBOARD)
- puts("RIoTboard\n");
- else
- printf("unknown - cputype : %02x\n", cpu_type(get_cpu_rev()));
- return 0;
- }
- #ifdef CONFIG_SPL_BUILD
- #include <spl.h>
- void board_init_f(ulong dummy)
- {
- u32 cputype = cpu_type(get_cpu_rev());
- switch (cputype) {
- case MXC_CPU_MX6SOLO:
- board_type = BOARD_IS_RIOTBOARD;
- break;
- case MXC_CPU_MX6D:
- board_type = BOARD_IS_MARSBOARD;
- break;
- }
- arch_cpu_init();
- /* setup GP timer */
- timer_init();
- #ifdef CONFIG_SPL_SERIAL_SUPPORT
- setup_iomux_uart();
- preloader_console_init();
- #endif
- }
- void board_boot_order(u32 *spl_boot_list)
- {
- spl_boot_list[0] = BOOT_DEVICE_MMC1;
- }
- /*
- * In order to jump to standard u-boot shell, you have to connect pin 5 of J13
- * to pin 3 (ground).
- */
- int spl_start_uboot(void)
- {
- int gpio_key = IMX_GPIO_NR(4, 16);
- gpio_direction_input(gpio_key);
- if (gpio_get_value(gpio_key) == 0)
- return 1;
- else
- return 0;
- }
- #endif
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