RCAR_PWMCNT_PH0_MASK
if (tmp > FIELD_MAX(RCAR_PWMCNT_PH0_MASK))
tmp = FIELD_MAX(RCAR_PWMCNT_PH0_MASK);
ph = FIELD_PREP(RCAR_PWMCNT_PH0_MASK, tmp);
(value & RCAR_PWMCNT_PH0_MASK) == 0)