diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/toradex/verdin-am62/verdin-am62.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/board/toradex/verdin-am62/verdin-am62.c b/board/toradex/verdin-am62/verdin-am62.c index 3d699f3205..5897d5d792 100644 --- a/board/toradex/verdin-am62/verdin-am62.c +++ b/board/toradex/verdin-am62/verdin-am62.c @@ -13,10 +13,13 @@ #include <fdt_support.h> #include <init.h> #include <k3-ddrss.h> +#include <power/regulator.h> #include <spl.h> #include "../common/tdx-cfg-block.h" +#define VDD_CORE_REG "buck1" + DECLARE_GLOBAL_DATA_PTR; int board_init(void) @@ -47,9 +50,37 @@ int board_fit_config_name_match(const char *name) } #endif +static u32 get_vdd_core_nominal(void) +{ + int core_uvolt; + + switch (k3_get_speed_grade()) { + case 'G': + case 'K': + case 'S': + core_uvolt = 750000; + break; + case 'T': + default: + core_uvolt = 850000; + break; + } + return core_uvolt; +} + #if IS_ENABLED(CONFIG_OF_LIBFDT) && IS_ENABLED(CONFIG_OF_BOARD_SETUP) int ft_board_setup(void *blob, struct bd_info *bd) { + int core_uvolt; + + core_uvolt = get_vdd_core_nominal(); + if (core_uvolt != 850000) { + do_fixup_by_path_u32(blob, "/bus@f0000/i2c@20000000/pmic@30/regulators/buck1", + "regulator-max-microvolt", core_uvolt, 0); + do_fixup_by_path_u32(blob, "/bus@f0000/i2c@20000000/pmic@30/regulators/buck1", + "regulator-min-microvolt", core_uvolt, 0); + } + return ft_common_board_setup(blob, bd); } #endif @@ -84,6 +115,22 @@ static void select_dt_from_module_version(void) int board_late_init(void) { + int ret; + int core_uvolt; + struct udevice *dev = NULL; + + core_uvolt = get_vdd_core_nominal(); + if (core_uvolt != 850000) { + /* Set CPU core voltage to 0.75V for slower speed grades */ + ret = regulator_get_by_devname(VDD_CORE_REG, &dev); + if (ret) + pr_err("VDD CORE Regulator get error: %d\n", ret); + + ret = regulator_set_value_force(dev, core_uvolt); + if (ret) + pr_err("VDD CORE Regulator value setting error: %d\n", ret); + } + select_dt_from_module_version(); return 0; |