diff --git a/drivers/pmdomain/mediatek/mtk-pm-domains.c b/drivers/pmdomain/mediatek/mtk-pm-domains.c
index b43f8b4a6a01..5eadc7271130 100644
--- a/drivers/pmdomain/mediatek/mtk-pm-domains.c
+++ b/drivers/pmdomain/mediatek/mtk-pm-domains.c
@@ -491,16 +491,8 @@ static int scpsys_ctl_pwrseq_on(struct scpsys_domain *pd)
 	if (ret < 0)
 		return ret;
 
-	if (pd->data->rtff_type == SCPSYS_RTFF_TYPE_PCIE_PHY)
-		regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_RTFF_CLK_DIS);
-
 	regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_CLK_DIS_BIT);
 	regmap_clear_bits(scpsys->base, pd->data->ctl_offs, PWR_ISO_BIT);
-
-	/* Wait for RTFF HW to sync buck isolation state if this is PCIe PHY RTFF */
-	if (pd->data->rtff_type == SCPSYS_RTFF_TYPE_PCIE_PHY)
-		udelay(5);
-
 	regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_RST_B_BIT);
 
 	/*