diff options
| author | Max Krummenacher <max.krummenacher@toradex.com> | 2020-10-28 11:58:12 +0200 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2020-12-06 15:31:37 +0100 |
| commit | 7d43807d6c7a8bac56cbca27b9e302eda7db0f6f (patch) | |
| tree | 00aa7384f71a18131dde75703256e8fdccb7b264 | |
| parent | caafc6c497db9fba3007c537e92cf3b184f8c1e3 (diff) | |
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 <max.krummenacher@toradex.com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
| -rw-r--r-- | board/toradex/verdin-imx8mm/spl.c | 42 | ||||
| -rw-r--r-- | configs/verdin-imx8mm_defconfig | 2 |
2 files changed, 21 insertions, 23 deletions
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 <dm/uclass.h> #include <dm/uclass-internal.h> #include <hang.h> +#include <i2c.h> #include <power/bd71837.h> +#include <power/pca9450.h> #include <power/pmic.h> #include <spl.h> 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; } diff --git a/configs/verdin-imx8mm_defconfig b/configs/verdin-imx8mm_defconfig index 836c6f6c31..ea0b5978f1 100644 --- a/configs/verdin-imx8mm_defconfig +++ b/configs/verdin-imx8mm_defconfig @@ -90,7 +90,7 @@ CONFIG_PINCTRL=y CONFIG_SPL_PINCTRL=y CONFIG_PINCTRL_IMX8M=y CONFIG_DM_PMIC=y -CONFIG_SPL_DM_PMIC_BD71837=y +CONFIG_SPL_DM_PMIC_PCA9450=y CONFIG_DM_PMIC_PFUZE100=y CONFIG_DM_REGULATOR=y CONFIG_DM_REGULATOR_FIXED=y |