MTK_CHK_PERIOD
[MTK_CHK_PERIOD] = {0x10, 8, GENMASK(20, 8)},
[MTK_CHK_PERIOD] = {0x24, 0, GENMASK(24, 0)},
val = (mtk_chk_period(ir) << ir->data->fields[MTK_CHK_PERIOD].offset) &
ir->data->fields[MTK_CHK_PERIOD].mask;
mtk_w32_mask(ir, val, ir->data->fields[MTK_CHK_PERIOD].mask,
ir->data->fields[MTK_CHK_PERIOD].reg);