From 7d43807d6c7a8bac56cbca27b9e302eda7db0f6f Mon Sep 17 00:00:00 2001 From: Max Krummenacher Date: Wed, 28 Oct 2020 11:58:12 +0200 Subject: verdin-imx8mm: spl: switch to pca9450 pmic V1.1A HW switched the PMIC from BD71837 to PCA9450. - Disable combined DVS in PCA9450_BUCK123_DVS. - Increase DDR Voltage to 0.95V as we use a 1.5GHz RAM. - Configure WDOG_B behaviour. Signed-off-by: Max Krummenacher Signed-off-by: Igor Opaniuk Acked-by: Marcel Ziswiler Reviewed-by: Oleksandr Suvorov --- board/toradex/verdin-imx8mm/spl.c | 42 +++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 22 deletions(-) (limited to 'board/toradex') diff --git a/board/toradex/verdin-imx8mm/spl.c b/board/toradex/verdin-imx8mm/spl.c index cc78c5666b..9562cdeb35 100644 --- a/board/toradex/verdin-imx8mm/spl.c +++ b/board/toradex/verdin-imx8mm/spl.c @@ -21,12 +21,16 @@ #include #include #include +#include #include +#include #include #include DECLARE_GLOBAL_DATA_PTR; +#define I2C_PMIC_BUS_ID 1 + int spl_board_boot_device(enum boot_device boot_dev_spl) { switch (boot_dev_spl) { @@ -101,33 +105,27 @@ 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; + if (IS_ENABLED(CONFIG_SPL_DM_PMIC_PCA9450)) { + ret = pmic_get("pmic", &dev); + if (ret == -ENODEV) { + puts("No pmic found\n"); + return ret; + } - /* decrease RESET key long push time from the default 10s to 10ms */ - pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0); + if (ret != 0) + return ret; - /* unlock the PMIC regs */ - pmic_reg_write(dev, BD718XX_REGLOCK, 0x1); + /* BUCKxOUT_DVS0/1 control BUCK123 output, clear PRESET_EN */ + pmic_reg_write(dev, PCA9450_BUCK123_DVS, 0x29); - /* 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 1.5Ghz DDR */ + pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, 0x1c); - /* increase VDD_DRAM to 0.975v for 3Ghz DDR */ - pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83); + /* set WDOG_B_CFG to cold reset */ + pmic_reg_write(dev, PCA9450_RESET_CTRL, 0xA1); -#ifndef CONFIG_IMX8M_LPDDR4 - /* increase NVCC_DRAM_1V2 to 1.2v for DDR4 */ - pmic_reg_write(dev, BD718XX_4TH_NODVS_BUCK_VOLT, 0x28); -#endif - - /* lock the PMIC regs */ - pmic_reg_write(dev, BD718XX_REGLOCK, 0x11); + return 0; + } return 0; } -- cgit v1.2.3