diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index 71163bc5bbf5..f58b3112baea 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -11,6 +11,7 @@
 #include "intel_de.h"
 #include "intel_display_types.h"
 #include "intel_dp.h"
+#include "intel_hdmi.h"
 #include "intel_panel.h"
 #include "intel_psr.h"
 #include "intel_tc.h"
@@ -285,6 +286,23 @@ static void intel_c20_sram_write(struct drm_i915_private *i915, enum port port,
 	intel_cx0_write(i915, port, lane, PHY_C20_WR_DATA_L, data & 0xff, 1);
 }
 
+static u16 intel_c20_sram_read(struct drm_i915_private *i915, enum port port,
+			       int lane, u16 addr)
+{
+	u16 val;
+
+	assert_dc_off(i915);
+
+	intel_cx0_write(i915, port, lane, PHY_C20_RD_ADDRESS_H, addr >> 8, 0);
+	intel_cx0_write(i915, port, lane, PHY_C20_RD_ADDRESS_L, addr & 0xff, 1);
+
+	val = intel_cx0_read(i915, port, lane, PHY_C20_RD_DATA_H);
+	val <<= 8;
+	val |= intel_cx0_read(i915, port, lane, PHY_C20_RD_DATA_L);
+
+	return val;
+}
+
 static void __intel_cx0_rmw(struct drm_i915_private *i915, enum port port,
 			    int lane, u16 addr, u8 clear, u8 set, bool committed)
 {
@@ -659,6 +677,199 @@ static const struct intel_c10pll_state * const mtl_c10_edp_tables[] = {
 	NULL,
 };
 
+/* C20 basic DP 1.4 tables */
+static const struct intel_c20pll_state mtl_c20_dp_rbr = {
+	.link_bit_rate = 162000,
+	.clock = 162000,
+	.tx = {	0xbe88, /* tx cfg0 */
+		0x5800, /* tx cfg1 */
+		0x0000, /* tx cfg2 */
+		},
+	.cmn = {0x0500, /* cmn cfg0*/
+		0x0005, /* cmn cfg1 */
+		0x0000, /* cmn cfg2 */
+		0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x50a8,	/* mpllb cfg0 */
+		0x2120,		/* mpllb cfg1 */
+		0xcd9a,		/* mpllb cfg2 */
+		0xbfc1,		/* mpllb cfg3 */
+		0x5ab8,         /* mpllb cfg4 */
+		0x4c34,         /* mpllb cfg5 */
+		0x2000,		/* mpllb cfg6 */
+		0x0001,		/* mpllb cfg7 */
+		0x6000,		/* mpllb cfg8 */
+		0x0000,		/* mpllb cfg9 */
+		0x0000,		/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_dp_hbr1 = {
+	.link_bit_rate = 270000,
+	.clock = 270000,
+	.tx = {	0xbe88, /* tx cfg0 */
+		0x4800, /* tx cfg1 */
+		0x0000, /* tx cfg2 */
+		},
+	.cmn = {0x0500, /* cmn cfg0*/
+		0x0005, /* cmn cfg1 */
+		0x0000, /* cmn cfg2 */
+		0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x308c,	/* mpllb cfg0 */
+		0x2110,		/* mpllb cfg1 */
+		0xcc9c,		/* mpllb cfg2 */
+		0xbfc1,		/* mpllb cfg3 */
+		0x4b9a,         /* mpllb cfg4 */
+		0x3f81,         /* mpllb cfg5 */
+		0x2000,		/* mpllb cfg6 */
+		0x0001,		/* mpllb cfg7 */
+		0x5000,		/* mpllb cfg8 */
+		0x0000,		/* mpllb cfg9 */
+		0x0000,		/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_dp_hbr2 = {
+	.link_bit_rate = 540000,
+	.clock = 540000,
+	.tx = {	0xbe88, /* tx cfg0 */
+		0x4800, /* tx cfg1 */
+		0x0000, /* tx cfg2 */
+		},
+	.cmn = {0x0500, /* cmn cfg0*/
+		0x0005, /* cmn cfg1 */
+		0x0000, /* cmn cfg2 */
+		0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x108c,	/* mpllb cfg0 */
+		0x2108,		/* mpllb cfg1 */
+		0xcc9c,		/* mpllb cfg2 */
+		0xbfc1,		/* mpllb cfg3 */
+		0x4b9a,         /* mpllb cfg4 */
+		0x3f81,         /* mpllb cfg5 */
+		0x2000,		/* mpllb cfg6 */
+		0x0001,		/* mpllb cfg7 */
+		0x5000,		/* mpllb cfg8 */
+		0x0000,		/* mpllb cfg9 */
+		0x0000,		/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_dp_hbr3 = {
+	.link_bit_rate = 810000,
+	.clock = 810000,
+	.tx = {	0xbe88, /* tx cfg0 */
+		0x4800, /* tx cfg1 */
+		0x0000, /* tx cfg2 */
+		},
+	.cmn = {0x0500, /* cmn cfg0*/
+		0x0005, /* cmn cfg1 */
+		0x0000, /* cmn cfg2 */
+		0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x10d2,	/* mpllb cfg0 */
+		0x2108,		/* mpllb cfg1 */
+		0x8d98,		/* mpllb cfg2 */
+		0xbfc1,		/* mpllb cfg3 */
+		0x7166,         /* mpllb cfg4 */
+		0x5f42,         /* mpllb cfg5 */
+		0x2000,		/* mpllb cfg6 */
+		0x0001,		/* mpllb cfg7 */
+		0x7800,		/* mpllb cfg8 */
+		0x0000,		/* mpllb cfg9 */
+		0x0000,		/* mpllb cfg10 */
+		},
+};
+
+/* C20 basic DP 2.0 tables */
+static const struct intel_c20pll_state mtl_c20_dp_uhbr10 = {
+	.link_bit_rate = 1000000, /* 10 Gbps */
+	.clock = 312500,
+	.tx = {	0xbe21, /* tx cfg0 */
+		0x4800, /* tx cfg1 */
+		0x0000, /* tx cfg2 */
+		},
+	.cmn = {0x0500, /* cmn cfg0*/
+		0x0005, /* cmn cfg1 */
+		0x0000, /* cmn cfg2 */
+		0x0000, /* cmn cfg3 */
+		},
+	.mplla = { 0x3104,	/* mplla cfg0 */
+		0xd105,		/* mplla cfg1 */
+		0xc025,		/* mplla cfg2 */
+		0xc025,		/* mplla cfg3 */
+		0x8c00,		/* mplla cfg4 */
+		0x759a,		/* mplla cfg5 */
+		0x4000,		/* mplla cfg6 */
+		0x0003,		/* mplla cfg7 */
+		0x3555,		/* mplla cfg8 */
+		0x0001,		/* mplla cfg9 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_dp_uhbr13_5 = {
+	.link_bit_rate = 1350000, /* 13.5 Gbps */
+	.clock = 421875,
+	.tx = {	0xbea0, /* tx cfg0 */
+		0x4800, /* tx cfg1 */
+		0x0000, /* tx cfg2 */
+		},
+	.cmn = {0x0500, /* cmn cfg0*/
+		0x0005, /* cmn cfg1 */
+		0x0000, /* cmn cfg2 */
+		0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x015f,	/* mpllb cfg0 */
+		0x2205,		/* mpllb cfg1 */
+		0x1b17,		/* mpllb cfg2 */
+		0xffc1,		/* mpllb cfg3 */
+		0xe100,		/* mpllb cfg4 */
+		0xbd00,		/* mpllb cfg5 */
+		0x2000,		/* mpllb cfg6 */
+		0x0001,		/* mpllb cfg7 */
+		0x4800,		/* mpllb cfg8 */
+		0x0000,		/* mpllb cfg9 */
+		0x0000,		/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_dp_uhbr20 = {
+	.link_bit_rate = 2000000, /* 20 Gbps */
+	.clock = 625000,
+	.tx = {	0xbe20, /* tx cfg0 */
+		0x4800, /* tx cfg1 */
+		0x0000, /* tx cfg2 */
+		},
+	.cmn = {0x0500, /* cmn cfg0*/
+		0x0005, /* cmn cfg1 */
+		0x0000, /* cmn cfg2 */
+		0x0000, /* cmn cfg3 */
+		},
+	.mplla = { 0x3104,	/* mplla cfg0 */
+		0xd105,		/* mplla cfg1 */
+		0xc025,		/* mplla cfg2 */
+		0xc025,		/* mplla cfg3 */
+		0xa6ab,		/* mplla cfg4 */
+		0x8c00,		/* mplla cfg5 */
+		0x4000,		/* mplla cfg6 */
+		0x0003,		/* mplla cfg7 */
+		0x3555,		/* mplla cfg8 */
+		0x0001,		/* mplla cfg9 */
+		},
+};
+
+static const struct intel_c20pll_state * const mtl_c20_dp_tables[] = {
+	&mtl_c20_dp_rbr,
+	&mtl_c20_dp_hbr1,
+	&mtl_c20_dp_hbr2,
+	&mtl_c20_dp_hbr3,
+	&mtl_c20_dp_uhbr10,
+	&mtl_c20_dp_uhbr13_5,
+	&mtl_c20_dp_uhbr20,
+	NULL,
+};
+
 /*
  * HDMI link rates with 38.4 MHz reference clock.
  */
@@ -1243,7 +1454,281 @@ static const struct intel_c10pll_state * const mtl_c10_hdmi_tables[] = {
 	NULL,
 };
 
-int intel_c10_phy_check_hdmi_link_rate(int clock)
+static const struct intel_c20pll_state mtl_c20_hdmi_25_175 = {
+	.link_bit_rate = 25175,
+	.clock = 25175,
+	.tx = {  0xbe88, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0xa0d2,	/* mpllb cfg0 */
+		   0x7d80,	/* mpllb cfg1 */
+		   0x0906,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x0200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x0000,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0001,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_27_0 = {
+	.link_bit_rate = 27000,
+	.clock = 27000,
+	.tx = {  0xbe88, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0xa0e0,	/* mpllb cfg0 */
+		   0x7d80,	/* mpllb cfg1 */
+		   0x0906,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x8000,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0001,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_74_25 = {
+	.link_bit_rate = 74250,
+	.clock = 74250,
+	.tx = {  0xbe88, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x609a,	/* mpllb cfg0 */
+		   0x7d40,	/* mpllb cfg1 */
+		   0xca06,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x5800,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0001,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_148_5 = {
+	.link_bit_rate = 148500,
+	.clock = 148500,
+	.tx = {  0xbe88, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x409a,	/* mpllb cfg0 */
+		   0x7d20,	/* mpllb cfg1 */
+		   0xca06,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x5800,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0001,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_594 = {
+	.link_bit_rate = 594000,
+	.clock = 594000,
+	.tx = {  0xbe88, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x009a,	/* mpllb cfg0 */
+		   0x7d08,	/* mpllb cfg1 */
+		   0xca06,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x5800,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0001,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_300 = {
+	.link_bit_rate = 3000000,
+	.clock = 166670,
+	.tx = {  0xbe98, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x209c,	/* mpllb cfg0 */
+		   0x7d10,	/* mpllb cfg1 */
+		   0xca06,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x2000,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0004,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_600 = {
+	.link_bit_rate = 6000000,
+	.clock = 333330,
+	.tx = {  0xbe98, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x009c,	/* mpllb cfg0 */
+		   0x7d08,	/* mpllb cfg1 */
+		   0xca06,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x2000,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0004,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_800 = {
+	.link_bit_rate = 8000000,
+	.clock = 444440,
+	.tx = {  0xbe98, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x00d0,	/* mpllb cfg0 */
+		   0x7d08,	/* mpllb cfg1 */
+		   0x4a06,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0003,	/* mpllb cfg7 */
+		   0x2aaa,	/* mpllb cfg8 */
+		   0x0002,	/* mpllb cfg9 */
+		   0x0004,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_1000 = {
+	.link_bit_rate = 10000000,
+	.clock = 555560,
+	.tx = {  0xbe98, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x1104,	/* mpllb cfg0 */
+		   0x7d08,	/* mpllb cfg1 */
+		   0x0a06,	/* mpllb cfg2 */
+		   0xbe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0003,	/* mpllb cfg7 */
+		   0x3555,	/* mpllb cfg8 */
+		   0x0001,	/* mpllb cfg9 */
+		   0x0004,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state mtl_c20_hdmi_1200 = {
+	.link_bit_rate = 12000000,
+	.clock = 666670,
+	.tx = {  0xbe98, /* tx cfg0 */
+		  0x9800, /* tx cfg1 */
+		  0x0000, /* tx cfg2 */
+		},
+	.cmn = { 0x0500, /* cmn cfg0*/
+		  0x0005, /* cmn cfg1 */
+		  0x0000, /* cmn cfg2 */
+		  0x0000, /* cmn cfg3 */
+		},
+	.mpllb = { 0x0138,	/* mpllb cfg0 */
+		   0x7d08,	/* mpllb cfg1 */
+		   0x5486,	/* mpllb cfg2 */
+		   0xfe40,	/* mpllb cfg3 */
+		   0x0000,	/* mpllb cfg4 */
+		   0x0000,	/* mpllb cfg5 */
+		   0x2200,	/* mpllb cfg6 */
+		   0x0001,	/* mpllb cfg7 */
+		   0x4000,	/* mpllb cfg8 */
+		   0x0000,	/* mpllb cfg9 */
+		   0x0004,	/* mpllb cfg10 */
+		},
+};
+
+static const struct intel_c20pll_state * const mtl_c20_hdmi_tables[] = {
+	&mtl_c20_hdmi_25_175,
+	&mtl_c20_hdmi_27_0,
+	&mtl_c20_hdmi_74_25,
+	&mtl_c20_hdmi_148_5,
+	&mtl_c20_hdmi_594,
+	&mtl_c20_hdmi_300,
+	&mtl_c20_hdmi_600,
+	&mtl_c20_hdmi_800,
+	&mtl_c20_hdmi_1000,
+	&mtl_c20_hdmi_1200,
+	NULL,
+};
+
+static int intel_c10_phy_check_hdmi_link_rate(int clock)
 {
 	const struct intel_c10pll_state * const *tables = mtl_c10_hdmi_tables;
 	int i;
@@ -1319,17 +1804,6 @@ static int intel_c10pll_calc_state(struct intel_crtc_state *crtc_state,
 	return -EINVAL;
 }
 
-int intel_cx0pll_calc_state(struct intel_crtc_state *crtc_state,
-			    struct intel_encoder *encoder)
-{
-	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	enum phy phy = intel_port_to_phy(i915, encoder->port);
-
-	drm_WARN_ON(&i915->drm, !intel_is_c10phy(i915, phy));
-
-	return intel_c10pll_calc_state(crtc_state, encoder);
-}
-
 void intel_c10pll_readout_hw_state(struct intel_encoder *encoder,
 				   struct intel_c10pll_state *pll_state)
 {
@@ -1427,6 +1901,74 @@ void intel_c10pll_dump_hw_state(struct drm_i915_private *i915,
 			    i + 2, hw_state->pll[i + 2], i + 3, hw_state->pll[i + 3]);
 }
 
+static int intel_c20_phy_check_hdmi_link_rate(int clock)
+{
+	const struct intel_c20pll_state * const *tables = mtl_c20_hdmi_tables;
+	int i;
+
+	for (i = 0; tables[i]; i++) {
+		if (clock == tables[i]->link_bit_rate)
+			return MODE_OK;
+	}
+
+	return MODE_CLOCK_RANGE;
+}
+
+int intel_cx0_phy_check_hdmi_link_rate(struct intel_hdmi *hdmi, int clock)
+{
+	struct intel_digital_port *dig_port = hdmi_to_dig_port(hdmi);
+	struct drm_i915_private *i915 = intel_hdmi_to_i915(hdmi);
+	enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
+
+	if (intel_is_c10phy(i915, phy))
+		return intel_c10_phy_check_hdmi_link_rate(clock);
+	return intel_c20_phy_check_hdmi_link_rate(clock);
+}
+
+static const struct intel_c20pll_state * const *
+intel_c20_pll_tables_get(struct intel_crtc_state *crtc_state,
+			 struct intel_encoder *encoder)
+{
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		return mtl_c20_dp_tables;
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return mtl_c20_hdmi_tables;
+
+	MISSING_CASE(encoder->type);
+	return NULL;
+}
+
+static int intel_c20pll_calc_state(struct intel_crtc_state *crtc_state,
+				   struct intel_encoder *encoder)
+{
+	const struct intel_c20pll_state * const *tables;
+	int i;
+
+	tables = intel_c20_pll_tables_get(crtc_state, encoder);
+	if (!tables)
+		return -EINVAL;
+
+	for (i = 0; tables[i]; i++) {
+		if (crtc_state->port_clock == tables[i]->link_bit_rate) {
+			crtc_state->cx0pll_state.c20 = *tables[i];
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+int intel_cx0pll_calc_state(struct intel_crtc_state *crtc_state,
+			 struct intel_encoder *encoder)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+	if (intel_is_c10phy(i915, phy))
+		return intel_c10pll_calc_state(crtc_state, encoder);
+	return intel_c20pll_calc_state(crtc_state, encoder);
+}
+
 static bool intel_c20_use_mplla(u32 clock)
 {
 	/* 10G and 20G rates use MPLLA */
@@ -1436,6 +1978,64 @@ static bool intel_c20_use_mplla(u32 clock)
 	return false;
 }
 
+void intel_c20pll_readout_hw_state(struct intel_encoder *encoder,
+				   struct intel_c20pll_state *pll_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	bool cntx;
+	intel_wakeref_t wakeref;
+	int i;
+
+	wakeref = intel_cx0_phy_transaction_begin(encoder);
+
+	/* 1. Read current context selection */
+	cntx = intel_cx0_read(i915, encoder->port, INTEL_CX0_LANE0, PHY_C20_VDR_CUSTOM_SERDES_RATE) & PHY_C20_CONTEXT_TOGGLE;
+
+	/* Read Tx configuration */
+	for (i = 0; i < ARRAY_SIZE(pll_state->tx); i++) {
+		if (cntx)
+			pll_state->tx[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+							       PHY_C20_B_TX_CNTX_CFG(i));
+		else
+			pll_state->tx[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+							       PHY_C20_A_TX_CNTX_CFG(i));
+	}
+
+	/* Read common configuration */
+	for (i = 0; i < ARRAY_SIZE(pll_state->cmn); i++) {
+		if (cntx)
+			pll_state->cmn[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+								PHY_C20_B_CMN_CNTX_CFG(i));
+		else
+			pll_state->cmn[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+								PHY_C20_A_CMN_CNTX_CFG(i));
+	}
+
+	if (pll_state->tx[0] & C20_PHY_USE_MPLLB) {
+		/* MPLLB configuration */
+		for (i = 0; i < ARRAY_SIZE(pll_state->mpllb); i++) {
+			if (cntx)
+				pll_state->mpllb[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+									  PHY_C20_B_MPLLB_CNTX_CFG(i));
+			else
+				pll_state->mpllb[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+									  PHY_C20_A_MPLLB_CNTX_CFG(i));
+		}
+	} else {
+		/* MPLLA configuration */
+		for (i = 0; i < ARRAY_SIZE(pll_state->mplla); i++) {
+			if (cntx)
+				pll_state->mplla[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+									  PHY_C20_B_MPLLA_CNTX_CFG(i));
+			else
+				pll_state->mplla[i] = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
+									  PHY_C20_A_MPLLA_CNTX_CFG(i));
+		}
+	}
+
+	intel_cx0_phy_transaction_end(encoder, wakeref);
+}
+
 static u8 intel_c20_get_dp_rate(u32 clock)
 {
 	switch (clock) {
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.h b/drivers/gpu/drm/i915/display/intel_cx0_phy.h
index 509d1d12776e..9760c6292c81 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.h
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.h
@@ -30,8 +30,12 @@ int intel_c10pll_calc_port_clock(struct intel_encoder *encoder,
 				 const struct intel_c10pll_state *pll_state);
 void intel_c10pll_state_verify(struct intel_atomic_state *state,
 			       struct intel_crtc_state *new_crtc_state);
+void intel_c20pll_readout_hw_state(struct intel_encoder *encoder,
+				   struct intel_c20pll_state *pll_state);
 void intel_cx0_phy_set_signal_levels(struct intel_encoder *encoder,
 				     const struct intel_crtc_state *crtc_state);
-int intel_c10_phy_check_hdmi_link_rate(int clock);
-
+int intel_cx0_phy_check_hdmi_link_rate(struct intel_hdmi *hdmi, int clock);
+void intel_cx0_phy_ddi_vswing_sequence(struct intel_encoder *encoder,
+				       const struct intel_crtc_state *crtc_state,
+				       u32 level);
 #endif /* __INTEL_CX0_PHY_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
index 3aa334b15eaf..bfb39bce3b04 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
@@ -207,6 +207,7 @@
 #define   C20_MPLLB_TX_CLK_DIV_MASK	REG_GENMASK(15, 13)
 #define   C20_MPLLB_FRACEN		REG_BIT(13)
 #define   C20_MULTIPLIER_MASK		REG_GENMASK(11, 0)
+#define   C20_PHY_USE_MPLLB		REG_BIT(7)
 
 #define RAWLANEAONX_DIG_TX_MPLLB_CAL_DONE_BANK(idx) (0x303D + (idx))
 
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index f445f2613adb..44f07011245b 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3853,10 +3853,13 @@ static void mtl_ddi_get_config(struct intel_encoder *encoder,
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	drm_WARN_ON(&i915->drm, !intel_is_c10phy(i915, phy));
+	if (intel_is_c10phy(i915, phy)) {
+		intel_c10pll_readout_hw_state(encoder, &crtc_state->cx0pll_state.c10);
+		intel_c10pll_dump_hw_state(i915, &crtc_state->cx0pll_state.c10);
+	} else {
+		intel_c20pll_readout_hw_state(encoder, &crtc_state->cx0pll_state.c20);
+	}
 
-	intel_c10pll_readout_hw_state(encoder, &crtc_state->cx0pll_state.c10);
-	intel_c10pll_dump_hw_state(i915, &crtc_state->cx0pll_state.c10);
 	crtc_state->port_clock = intel_c10pll_calc_port_clock(encoder, &crtc_state->cx0pll_state.c10);
 
 	intel_ddi_get_config(encoder, crtc_state);
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 99b187f2f4ed..96a3183675be 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -997,6 +997,7 @@ struct intel_c10pll_state {
 };
 
 struct intel_c20pll_state {
+	u32 link_bit_rate;
 	u32 clock; /* in kHz */
 	u16 tx[3];
 	u16 cmn[4];
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 8141d5184856..65a258507d62 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -58,7 +58,7 @@
 #include "intel_panel.h"
 #include "intel_snps_phy.h"
 
-static struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi *intel_hdmi)
+inline struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi *intel_hdmi)
 {
 	return to_i915(hdmi_to_dig_port(intel_hdmi)->base.base.dev);
 }
@@ -1865,8 +1865,8 @@ hdmi_port_clock_valid(struct intel_hdmi *hdmi,
 	 * FIXME: We will hopefully get an algorithmic way of programming
 	 * the MPLLB for HDMI in the future.
 	 */
-	if (IS_METEORLAKE(dev_priv))
-		return intel_c10_phy_check_hdmi_link_rate(clock);
+	if (DISPLAY_VER(dev_priv) >= 14)
+		return intel_cx0_phy_check_hdmi_link_rate(hdmi, clock);
 	else if (IS_DG2(dev_priv))
 		return intel_snps_phy_check_hdmi_link_rate(clock);
 
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.h b/drivers/gpu/drm/i915/display/intel_hdmi.h
index 774dda2376ed..492bd3921385 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.h
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.h
@@ -54,5 +54,6 @@ int intel_hdmi_dsc_get_num_slices(const struct intel_crtc_state *crtc_state,
 				  int src_max_slices, int src_max_slice_width,
 				  int hdmi_max_slices, int hdmi_throughput);
 int intel_hdmi_dsc_get_slice_height(int vactive);
+struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi *intel_hdmi);
 
 #endif /* __INTEL_HDMI_H__ */
