JZ_ADC_REG_CFG_CMD_SEL
writel(cfg & ~JZ_ADC_REG_CFG_CMD_SEL, adc->base + JZ_ADC_REG_CFG);
ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_CMD_SEL,
JZ_ADC_REG_CFG_CMD_SEL);
ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_CMD_SEL, 0);