static void setup_power(int is_resume)
{
int error = 0;
power_init();
if (is_resume) {
return;
}
/* Initialize I2C bus to configure PMIC. */
exynos_pinmux_i2c0();
i2c_init(0, I2C_0_SPEED, 0x00);
printk(BIOS_DEBUG, "%s: Setting up PMIC...\n", __func__);
/*
* We're using CR1616 coin cell battery that is non-rechargeable
* battery. But, BBCHOSTEN bit of the BBAT Charger Register in
* MAX77686 is enabled by default for charging coin cell.
*
* Also, we cannot meet the coin cell reverse current spec. in UL
* standard if BBCHOSTEN bit is enabled.
*
* Disable Coin BATT Charging
*/
error = max77686_disable_backup_batt(PMIC_BUS);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK2, VDD_ARM_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK3, VDD_INT_UV,
REG_ENABLE, MAX77686_UV);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK1, VDD_MIF_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_BUCK4, VDD_G3D_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO2, VDD_LDO2_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO3, VDD_LDO3_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO5, VDD_LDO5_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_volsetting(PMIC_BUS, PMIC_LDO10, VDD_LDO10_MV,
REG_ENABLE, MAX77686_MV);
error |= max77686_enable_32khz_cp(PMIC_BUS);
if (error) {
printk(BIOS_CRIT, "%s: PMIC error: %#x\n", __func__, error);
die("Failed to intialize PMIC.\n");
}
}
int board_init(void)
{
struct fdt_memory mem_config;
/* Record the time we spent before SPL */
bootstage_add_record(BOOTSTAGE_ID_START_SPL, "spl_start", 0,
CONFIG_SPL_TIME_US);
bootstage_mark_name(BOOTSTAGE_ID_BOARD_INIT, "board_init");
if (fdtdec_decode_memory(gd->fdt_blob, &mem_config)) {
debug("%s: Failed to decode memory\n", __func__);
return -1;
}
gd->bd->bi_boot_params = mem_config.start + 0x100UL;
#ifdef CONFIG_OF_CONTROL
gd->bd->bi_arch_number = fdtdec_get_config_int(gd->fdt_blob,
"machine-arch-id", -1);
if (gd->bd->bi_arch_number == -1U)
debug("Warning: No /config/machine-arch-id defined in fdt\n");
#endif
#ifdef CONFIG_EXYNOS_SPI
spi_init();
#endif
if (board_i2c_arb_init(gd->fdt_blob))
return -1;
board_i2c_init(gd->fdt_blob);
#ifdef CONFIG_TPS65090_POWER
tps65090_init();
/*
* If we just reset, disable the backlight and lcd fets before
* [re-]initializing the lcd. This ensures we are always in the same
* state during lcd init. We've seen some oddities with these fets, so
* this removes a bit of uncertainty.
*/
if (board_is_processor_reset()) {
tps65090_fet_disable(1);
tps65090_fet_disable(6);
}
#endif
exynos_lcd_check_next_stage(gd->fdt_blob, 0);
if (max77686_enable_32khz_cp()) {
debug("%s: Failed to enable max77686 32khz coprocessor clock\n",
__func__);
return -1;
}
#if defined CONFIG_EXYNOS_CPUFREQ
if (exynos5250_cpufreq_init(gd->fdt_blob)) {
debug("%s: Failed to init CPU frequency scaling\n", __func__);
return -1;
}
#endif
#if defined CONFIG_EXYNOS_TMU
if (tmu_init(gd->fdt_blob)) {
debug("%s: Failed to init TMU\n", __func__);
return -1;
}
#endif
/* Clock Gating all the unused IP's to save power */
clock_gate();
/* Disable USB3.0 PLL to save 250mW of power */
disable_usb30_pll();
if (board_init_mkbp_devices(gd->fdt_blob))
return -1;
board_configure_analogix();
board_enable_audio_codec();
exynos_lcd_check_next_stage(gd->fdt_blob, 0);
bootstage_mark_name(BOOTSTAGE_ID_BOARD_INIT_DONE, "board_init_done");
return 0;
}