コード例 #1
0
ファイル: romstage.c プロジェクト: B-Rich/coreboot
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");
	}
}
コード例 #2
0
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;
}