TIPMIC_ADC_CTRL
reg = tipmic_read_1(sc, TIPMIC_ADC_CTRL, 0);
tipmic_write_1(sc, TIPMIC_ADC_CTRL, reg, 0);
tipmic_write_1(sc, TIPMIC_ADC_CTRL, reg, 0);
tipmic_write_1(sc, TIPMIC_ADC_CTRL, reg, 0);
reg = tipmic_read_1(sc, TIPMIC_ADC_CTRL, 0);
tipmic_write_1(sc, TIPMIC_ADC_CTRL, reg, 0);