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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2020 Compass Electronics Group, LLC
*/
#include <common.h>
#include <hang.h>
#include <image.h>
#include <init.h>
#include <log.h>
#include <asm/io.h>
#include <errno.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/ddr.h>
#include <asm/arch/imx8mn_pins.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/clock.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/gpio.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <asm/sections.h>
#include <fsl_esdhc_imx.h>
#include <mmc.h>
#include <linux/delay.h>
#include <power/pmic.h>
#include <power/bd71837.h>
#include <spl.h>
#include <dm/uclass.h>
#include <dm/device.h>
#include <dm/uclass-internal.h>
#include <dm/device-internal.h>
DECLARE_GLOBAL_DATA_PTR;
int spl_board_boot_device(enum boot_device boot_dev_spl)
{
return BOOT_DEVICE_BOOTROM;
}
void spl_dram_init(void)
{
ddr_init(&dram_timing);
}
void spl_board_init(void)
{
struct udevice *dev;
int ret;
debug("Normal Boot\n");
ret = uclass_get_device_by_name(UCLASS_CLK,
"clock-controller@30380000",
&dev);
if (ret < 0)
puts("Failed to find clock node. Check device tree\n");
}
#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
/* Just empty function now - can't decide what to choose */
debug("%s: %s\n", __func__, name);
return 0;
}
#endif
#define PWM1_PAD_CTRL (PAD_CTL_FSEL2 | PAD_CTL_DSE6)
static iomux_v3_cfg_t const pwm_pads[] = {
IMX8MN_PAD_GPIO1_IO01__PWM1_OUT | MUX_PAD_CTRL(PWM1_PAD_CTRL),
};
static int power_init_board(void)
{
struct udevice *dev;
int ret;
ret = pmic_get("pmic@4b", &dev);
if (ret == -ENODEV) {
puts("No pmic\n");
return 0;
}
if (ret != 0)
return ret;
/* decrease RESET key long push time from the default 10s to 10ms */
pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0);
/* unlock the PMIC regs */
pmic_reg_write(dev, BD718XX_REGLOCK, 0x1);
/* increase VDD_SOC to typical value 0.85v before first DRAM access */
pmic_reg_write(dev, BD718XX_BUCK1_VOLT_RUN, 0x0f);
/* increase VDD_DRAM to 0.975v for 3Ghz DDR */
pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83);
/* lock the PMIC regs */
pmic_reg_write(dev, BD718XX_REGLOCK, 0x11);
return 0;
}
int board_early_init_f(void)
{
/* Claiming pwm pins prevents LCD flicker during startup*/
imx_iomux_v3_setup_multiple_pads(pwm_pads, ARRAY_SIZE(pwm_pads));
init_uart_clk(1);
return 0;
}
void board_init_f(ulong dummy)
{
int ret;
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);
arch_cpu_init();
board_early_init_f();
timer_init();
ret = spl_init();
if (ret) {
debug("spl_init() failed: %d\n", ret);
hang();
}
preloader_console_init();
enable_tzc380();
/* LPDDR4 at 1.6GHz requires a voltage adjustment on the PMIC */
power_init_board();
/* DDR initialization */
spl_dram_init();
board_init_r(NULL, 0);
}
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