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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2025 PHYTEC Messtechnik GmbH
*/
#include <config.h>
#include <asm/arch/clock.h>
#include <asm/arch/ddr.h>
#include <asm/arch/imx8mp_pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/global_data.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/gpio.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <asm/mach-imx/iomux-v3.h>
#include <hang.h>
#include <init.h>
#include <log.h>
#include <power/pmic.h>
#include <power/pca9450.h>
#include <spl.h>
#if IS_ENABLED(CONFIG_PHYTEC_SOM_DETECTION)
#include "../common/imx8m_som_detection.h"
#endif
DECLARE_GLOBAL_DATA_PTR;
#define EEPROM_ADDR 0x51
int spl_board_boot_device(enum boot_device boot_dev_spl)
{
return BOOT_DEVICE_BOOTROM;
}
void spl_dram_init(void)
{
#if IS_ENABLED(CONFIG_PHYTEC_SOM_DETECTION)
int ret;
ret = phytec_eeprom_data_setup(NULL, 0, EEPROM_ADDR);
if (!ret) {
ret = phytec_imx8m_detect(NULL);
if (!ret)
phytec_print_som_info(NULL);
}
#endif
ddr_init(&dram_timing);
}
#define I2C_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PE)
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
struct i2c_pads_info i2c_pad_info1 = {
.scl = {
.i2c_mode = MX8MP_PAD_I2C1_SCL__I2C1_SCL | PC,
.gpio_mode = MX8MP_PAD_I2C1_SCL__GPIO5_IO14 | PC,
.gp = IMX_GPIO_NR(5, 14),
},
.sda = {
.i2c_mode = MX8MP_PAD_I2C1_SDA__I2C1_SDA | PC,
.gpio_mode = MX8MP_PAD_I2C1_SDA__GPIO5_IO15 | PC,
.gp = IMX_GPIO_NR(5, 15),
},
};
int power_init_board(void)
{
struct pmic *p;
int ret;
ret = power_pca9450_init(0, 0x25);
if (ret)
printf("power init failed");
p = pmic_get("PCA9450");
pmic_probe(p);
/* BUCKxOUT_DVS0/1 control BUCK123 output */
pmic_reg_write(p, PCA9450_BUCK123_DVS, 0x29);
/* Increase VDD_SOC and VDD_ARM to OD voltage 0.95V */
pmic_reg_write(p, PCA9450_BUCK1OUT_DVS0, 0x1C);
pmic_reg_write(p, PCA9450_BUCK2OUT_DVS0, 0x1C);
/* Set BUCK1 DVS1 to suspend controlled through PMIC_STBY_REQ */
pmic_reg_write(p, PCA9450_BUCK1OUT_DVS1, 0x14);
pmic_reg_write(p, PCA9450_BUCK1CTRL, 0x59);
/* Set WDOG_B_CFG to cold reset */
pmic_reg_write(p, PCA9450_RESET_CTRL, 0xA1);
return 0;
}
void spl_board_init(void)
{
arch_misc_init();
/* Set GIC clock to 500Mhz for OD VDD_SOC. */
clock_enable(CCGR_GIC, 0);
clock_set_target_val(GIC_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(5));
clock_enable(CCGR_GIC, 1);
}
int board_fit_config_name_match(const char *name)
{
return 0;
}
void board_init_f(ulong dummy)
{
int ret;
arch_cpu_init();
ret = spl_early_init();
if (ret) {
debug("spl_early_init() failed: %d\n", ret);
hang();
}
preloader_console_init();
enable_tzc380();
setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
power_init_board();
/* DDR initialization */
spl_dram_init();
}
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