LRADC_CTRL4_LRADCSELECT_MASK
writel(LRADC_CTRL4_LRADCSELECT_MASK(0),
ctrl4_clr |= LRADC_CTRL4_LRADCSELECT_MASK(ofs);
writel(LRADC_CTRL4_LRADCSELECT_MASK(vch),
LRADC_CTRL4_LRADCSELECT_MASK(n))