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| author | Peng Fan <peng.fan@nxp.com> | 2019-10-16 10:24:42 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-11-03 17:04:16 +0100 |
| commit | 8c61eba03d062488ca222491b90f609ee49a441b (patch) | |
| tree | 223c821e8f41f74d83257cdd72c70a83b9ff3e0c /board | |
| parent | 1a9971035dde36e59e2a2e2f50668eebdf63d9d1 (diff) | |
| download | u-boot-8c61eba03d062488ca222491b90f609ee49a441b.zip u-boot-8c61eba03d062488ca222491b90f609ee49a441b.tar.gz u-boot-8c61eba03d062488ca222491b90f609ee49a441b.tar.bz2 | |
imx8mm: evk: enable bd71837 pmic
Enable bd71837 pmic for i.MX8MM EVK board, need to set voltage for
DRAM and linux suspend voltage requirement.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/imx8mm_evk/spl.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/board/freescale/imx8mm_evk/spl.c b/board/freescale/imx8mm_evk/spl.c index 2a5fb27..2d08f9a 100644 --- a/board/freescale/imx8mm_evk/spl.c +++ b/board/freescale/imx8mm_evk/spl.c @@ -18,6 +18,9 @@ #include <dm/uclass-internal.h> #include <dm/device-internal.h> +#include <power/pmic.h> +#include <power/bd71837.h> + DECLARE_GLOBAL_DATA_PTR; int spl_board_boot_device(enum boot_device boot_dev_spl) @@ -79,6 +82,42 @@ int board_early_init_f(void) return 0; } +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); + +#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; +} + void board_init_f(ulong dummy) { struct udevice *dev; @@ -113,6 +152,8 @@ void board_init_f(ulong dummy) enable_tzc380(); + power_init_board(); + /* DDR initialization */ spl_dram_init(); |