diff options
Diffstat (limited to 'board/st/common/stpmic1.c')
| -rw-r--r-- | board/st/common/stpmic1.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/board/st/common/stpmic1.c b/board/st/common/stpmic1.c index 85f950575f..3aa379e8a5 100644 --- a/board/st/common/stpmic1.c +++ b/board/st/common/stpmic1.c @@ -164,8 +164,25 @@ int board_ddr_power_init(enum ddr_type ddr_type) return 0; } +static int stmpic_buck1_set(struct udevice *dev, u32 voltage_mv) +{ + u32 value; + + /* VDDCORE= STMPCI1 BUCK1 ramp=+25mV, 5 => 725mV, 36 => 1500mV */ + value = ((voltage_mv - 725) / 25) + 5; + if (value < 5) + value = 5; + if (value > 36) + value = 36; + + return pmic_clrsetbits(dev, + STPMIC1_BUCKX_MAIN_CR(STPMIC1_BUCK1), + STPMIC1_BUCK_VOUT_MASK, + STPMIC1_BUCK_VOUT(value)); +} + /* early init of PMIC */ -void stpmic1_init(void) +void stpmic1_init(u32 voltage_mv) { struct udevice *dev; @@ -173,6 +190,10 @@ void stpmic1_init(void) DM_GET_DRIVER(pmic_stpmic1), &dev)) return; + /* update VDDCORE = BUCK1 */ + if (voltage_mv) + stmpic_buck1_set(dev, voltage_mv); + /* Keep vdd on during the reset cycle */ pmic_clrsetbits(dev, STPMIC1_BUCKS_MRST_CR, |