diff options
| -rw-r--r-- | chip/it83xx/adc.c | 2 | ||||
| -rw-r--r-- | chip/it83xx/registers.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/chip/it83xx/adc.c b/chip/it83xx/adc.c index ba5f70e27e..ec662b0490 100644 --- a/chip/it83xx/adc.c +++ b/chip/it83xx/adc.c @@ -308,6 +308,8 @@ static void adc_accuracy_initialization(void) { /* bit3 : start adc accuracy initialization */ IT83XX_ADC_ADCSTS |= 0x08; + /* Enable automatic HW calibration. */ + IT83XX_ADC_KDCTL |= IT83XX_ADC_AHCE; /* short delay for adc accuracy initialization */ IT83XX_GCTRL_WNCKR = 0; /* bit3 : stop adc accuracy initialization */ diff --git a/chip/it83xx/registers.h b/chip/it83xx/registers.h index be346c6153..f925691dab 100644 --- a/chip/it83xx/registers.h +++ b/chip/it83xx/registers.h @@ -1044,6 +1044,7 @@ enum clock_gate_offsets { #define IT83XX_ADC_ADCGCR REG8(IT83XX_ADC_BASE+0x03) #define IT83XX_ADC_VCH0CTL REG8(IT83XX_ADC_BASE+0x04) #define IT83XX_ADC_KDCTL REG8(IT83XX_ADC_BASE+0x05) +#define IT83XX_ADC_AHCE BIT(7) #define IT83XX_ADC_VCH1CTL REG8(IT83XX_ADC_BASE+0x06) #define IT83XX_ADC_VCH1DATL REG8(IT83XX_ADC_BASE+0x07) #define IT83XX_ADC_VCH1DATM REG8(IT83XX_ADC_BASE+0x08) |