diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
index 0879ce47d4c5..9e153e080739 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
@@ -29,14 +29,6 @@ long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 	return rate;
 }
 
-unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
-				       unsigned long parent_rate)
-{
-	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
-
-	return hdmi_phy->pll_rate;
-}
-
 void mtk_hdmi_phy_clear_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 			     u32 bits)
 {
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
index 0045824c1be9..d28b8d5ed2b4 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
@@ -51,8 +51,6 @@ void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
 struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw);
 long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 			     unsigned long *parent_rate);
-unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
-				       unsigned long parent_rate);
 
 extern struct platform_driver mtk_hdmi_phy_driver;
 extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf;
diff --git a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
index 844e622f052c..b24ea6651db4 100644
--- a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
+++ b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
@@ -79,7 +79,6 @@ static int mtk_hdmi_pll_prepare(struct clk_hw *hw)
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
 	usleep_range(80, 100);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
-	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK);
@@ -94,7 +93,6 @@ static void mtk_hdmi_pll_unprepare(struct clk_hw *hw)
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK);
-	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
 	usleep_range(80, 100);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
@@ -123,6 +121,7 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_PREDIV_MASK);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK);
+	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV);
 	mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IC),
 			  RG_HTPLL_IC_MASK);
 	mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IR),
@@ -154,6 +153,40 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
+static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
+					       unsigned long parent_rate)
+{
+	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+	unsigned long out_rate, val;
+
+	val = (readl(hdmi_phy->regs + HDMI_CON6)
+		   & RG_HTPLL_PREDIV_MASK) >> RG_HTPLL_PREDIV;
+	switch (val) {
+	case 0x00:
+		out_rate = parent_rate;
+		break;
+	case 0x01:
+		out_rate = parent_rate / 2;
+		break;
+	default:
+		out_rate = parent_rate / 4;
+		break;
+	}
+
+	val = (readl(hdmi_phy->regs + HDMI_CON6)
+		   & RG_HTPLL_FBKDIV_MASK) >> RG_HTPLL_FBKDIV;
+	out_rate *= (val + 1) * 2;
+	val = (readl(hdmi_phy->regs + HDMI_CON2)
+		   & RG_HDMITX_TX_POSDIV_MASK);
+
+	out_rate >>= (val >> RG_HDMITX_TX_POSDIV);
+
+	if (readl(hdmi_phy->regs + HDMI_CON2) & RG_HDMITX_EN_TX_POSDIV)
+		out_rate = out_rate / 5;
+
+	return out_rate;
+}
+
 static const struct clk_ops mtk_hdmi_phy_pll_ops = {
 	.prepare = mtk_hdmi_pll_prepare,
 	.unprepare = mtk_hdmi_pll_unprepare,
@@ -174,7 +207,6 @@ static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy)
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
 	usleep_range(80, 100);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
-	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
 	mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK);
@@ -186,7 +218,6 @@ static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK);
-	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
 	usleep_range(80, 100);
 	mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
index f44066875dcd..625739b4e938 100644
--- a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
+++ b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
@@ -285,6 +285,14 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
+unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
+					unsigned long parent_rate)
+{
+	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+
+	return hdmi_phy->pll_rate;
+}
+
 static const struct clk_ops mtk_hdmi_phy_pll_ops = {
 	.prepare = mtk_hdmi_pll_prepare,
 	.unprepare = mtk_hdmi_pll_unprepare,
