diff options
Diffstat (limited to 'src/soc/mediatek/mt8173/mt6391.c')
| -rw-r--r-- | src/soc/mediatek/mt8173/mt6391.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8173/mt6391.c b/src/soc/mediatek/mt8173/mt6391.c index 21ce7ea6fe..9f5ed0a253 100644 --- a/src/soc/mediatek/mt8173/mt6391.c +++ b/src/soc/mediatek/mt8173/mt6391.c @@ -59,6 +59,23 @@ void mt6391_write(u16 reg, u16 val, u32 mask, u32 shift) return; } +int mt6391_configure_ca53_voltage(int uv) +{ + /* target voltage = 700mv + 6.25mv * buck_val */ + u16 buck_val = (uv - 700000) / 6250; + u16 current_val = mt6391_read(PMIC_RG_VCA15_CON12, 0x7f, 0x0); + + assert(buck_val < (1 << 8)); + mt6391_write(PMIC_RG_VCA15_CON9, buck_val, 0x7f, 0x0); + mt6391_write(PMIC_RG_VCA15_CON10, buck_val, 0x7f, 0x0); + + /* For buck delay, default slew rate is 6.25mv/0.5us */ + if (buck_val > current_val) + return ((buck_val - current_val) / 2) ; + else + return 0; +} + static void mt6391_configure_vcama(enum ldo_voltage vsel) { /* 2'b00: 1.5V |