diff options
Diffstat (limited to 'board/kontron/pitx_imx8m/spl.c')
| -rw-r--r-- | board/kontron/pitx_imx8m/spl.c | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/board/kontron/pitx_imx8m/spl.c b/board/kontron/pitx_imx8m/spl.c new file mode 100644 index 00000000000..c043dd205bb --- /dev/null +++ b/board/kontron/pitx_imx8m/spl.c @@ -0,0 +1,299 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <common.h> +#include <errno.h> +#include <fsl_esdhc_imx.h> +#include <hang.h> +#include <init.h> +#include <log.h> +#include <spl.h> +#include <asm/arch/ddr.h> +#include <asm/arch/imx8mq_pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/clock.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/gpio.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <linux/delay.h> +#include <power/pmic.h> +#include <power/pfuze100_pmic.h> + +#include "pitx_misc.h" + +extern struct dram_timing_info dram_timing_2gb; +extern struct dram_timing_info dram_timing_4gb; + +DECLARE_GLOBAL_DATA_PTR; + + +static void spl_dram_init(void) +{ + struct dram_timing_info *dram_timing; + int variant = 0, size; + + variant = get_pitx_board_variant(); + + switch(variant) { + case 2: + dram_timing = &dram_timing_2gb; + size = 2; + break; + case 3: + dram_timing = &dram_timing_4gb; + size = 4; + break; + default: + printf("Unknown DDR type (%d)\n", variant); + return; + }; + + /* ddr init */ + ddr_init(dram_timing); +} + +#define I2C_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE) +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) +static struct i2c_pads_info i2c_pad_info1 = { + .scl = { + .i2c_mode = IMX8MQ_PAD_I2C1_SCL__I2C1_SCL | PC, + .gpio_mode = IMX8MQ_PAD_I2C1_SCL__GPIO5_IO14 | PC, + .gp = IMX_GPIO_NR(5, 14), + }, + .sda = { + .i2c_mode = IMX8MQ_PAD_I2C1_SDA__I2C1_SDA | PC, + .gpio_mode = IMX8MQ_PAD_I2C1_SDA__GPIO5_IO15 | PC, + .gp = IMX_GPIO_NR(5, 15), + }, +}; + +#if CONFIG_IS_ENABLED(MMC) +#define USDHC2_CD_GPIO IMX_GPIO_NR(2, 12) +#define USDHC1_PWR_GPIO IMX_GPIO_NR(2, 10) +#define USDHC2_PWR_GPIO IMX_GPIO_NR(2, 19) + +int board_mmc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; + int ret = 0; + + switch (cfg->esdhc_base) { + case USDHC1_BASE_ADDR: + /* the eMMC does not have a CD pin */ + ret = 1; + case USDHC2_BASE_ADDR: + ret = !gpio_get_value(USDHC2_CD_GPIO); + } + + return ret; +} + + +#define USDHC_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | \ + PAD_CTL_FSEL2) +#define USDHC_GPIO_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_DSE1) + +static iomux_v3_cfg_t const usdhc1_pads[] = { + IMX8MQ_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA4__USDHC1_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA5__USDHC1_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA6__USDHC1_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA7__USDHC1_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_RESET_B__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static iomux_v3_cfg_t const usdhc2_pads[] = { + IMX8MQ_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0x16 */ + IMX8MQ_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_CD_B__GPIO2_IO12 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL), + IMX8MQ_PAD_SD2_RESET_B__GPIO2_IO19 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL), +}; + +static struct fsl_esdhc_cfg usdhc_cfg[2] = { + {USDHC1_BASE_ADDR, 0, 8}, + {USDHC2_BASE_ADDR, 0, 4}, +}; + +int board_mmc_init(struct bd_info *bis) +{ + int i, ret; + /* + * According to the board_mmc_init() the following map is done: + * (U-Boot device node) (Physical Port) + * mmc0 USDHC1 + * mmc1 USDHC2 + */ + for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) { + switch (i) { + case 0: + init_clk_usdhc(0); + usdhc_cfg[0].sdhc_clk = mxc_get_clock(USDHC1_CLK_ROOT); + imx_iomux_v3_setup_multiple_pads(usdhc1_pads, + ARRAY_SIZE(usdhc1_pads)); + gpio_request(USDHC1_PWR_GPIO, "usdhc1_reset"); + gpio_direction_output(USDHC1_PWR_GPIO, 0); + udelay(500); + gpio_direction_output(USDHC1_PWR_GPIO, 1); + break; + case 1: + init_clk_usdhc(1); + usdhc_cfg[1].sdhc_clk = mxc_get_clock(USDHC2_CLK_ROOT); + imx_iomux_v3_setup_multiple_pads(usdhc2_pads, + ARRAY_SIZE(usdhc2_pads)); + gpio_request(USDHC2_PWR_GPIO, "usdhc2_reset"); + gpio_direction_output(USDHC2_PWR_GPIO, 0); + udelay(500); + gpio_direction_output(USDHC2_PWR_GPIO, 1); + break; + default: + printf("Warning: you configured more USDHC controllers " + "(%d) than supported by the board\n", i + 1); + return -EINVAL; + } + + ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]); + if (ret) + return ret; + } + + return 0; +} + +const char *spl_board_loader_name(u32 boot_device) +{ + switch (boot_device) { + case BOOT_DEVICE_MMC1: + return "eMMC"; + case BOOT_DEVICE_MMC2: + return "SD card"; + default: + return NULL; + } +} +#endif + +#if CONFIG_IS_ENABLED(POWER_LEGACY) +#define I2C_PMIC 0 + +static int pfuze_mode_init(struct pmic *p, u32 mode) +{ + unsigned char offset, i, switch_num; + u32 id; + int ret; + + pmic_reg_read(p, PFUZE100_DEVICEID, &id); + id = id & 0xf; + + if (id == 0) { + switch_num = 6; + offset = PFUZE100_SW1CMODE; + } else if (id == 1) { + switch_num = 4; + offset = PFUZE100_SW2MODE; + } else { + printf("Not supported, id=%d\n", id); + return -EINVAL; + } + + ret = pmic_reg_write(p, PFUZE100_SW1ABMODE, mode); + if (ret < 0) { + printf("Set SW1AB mode error!\n"); + return ret; + } + + for (i = 0; i < switch_num - 1; i++) { + ret = pmic_reg_write(p, offset + i * SWITCH_SIZE, mode); + if (ret < 0) { + printf("Set switch 0x%x mode error!\n", + offset + i * SWITCH_SIZE); + return ret; + } + } + + return ret; +} + +int power_init_board(void) +{ + struct pmic *p; + int ret; + unsigned int reg; + + ret = power_pfuze100_init(I2C_PMIC); + if (ret) + return -ENODEV; + + p = pmic_get("PFUZE100"); + ret = pmic_probe(p); + if (ret) + return -ENODEV; + + pmic_reg_read(p, PFUZE100_SW3AVOL, ®); + if ((reg & 0x3f) != 0x18) { + reg &= ~0x3f; + reg |= 0x18; + pmic_reg_write(p, PFUZE100_SW3AVOL, reg); + } + + ret = pfuze_mode_init(p, APS_PFM); + if (ret < 0) + return ret; + + /* set SW3A standby mode to off */ + pmic_reg_read(p, PFUZE100_SW3AMODE, ®); + reg &= ~0xf; + reg |= APS_OFF; + pmic_reg_write(p, PFUZE100_SW3AMODE, reg); + + return 0; +} +#endif + +void board_init_f(ulong dummy) +{ + int ret; + + /* Clear global data */ + memset((void *)gd, 0, sizeof(gd_t)); + + arch_cpu_init(); + + init_uart_clk(2); + + board_early_init_f(); + + timer_init(); + + preloader_console_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + ret = spl_init(); + if (ret) { + debug("spl_init() failed: %d\n", ret); + hang(); + } + + enable_tzc380(); + + setup_i2c(0, 100000, 0x7f, &i2c_pad_info1); + +#if CONFIG_IS_ENABLED(POWER_LEGACY) + power_init_board(); +#endif + + spl_dram_init(); + + board_init_r(NULL, 0); +} |