diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 1c9ed4c52760..2cd8de174bf6 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -269,6 +269,7 @@ i915-y += \
 	display/intel_pch_display.o \
 	display/intel_pch_refclk.o \
 	display/intel_plane_initial.o \
+	display/intel_pmdemand.o \
 	display/intel_psr.o \
 	display/intel_quirks.o \
 	display/intel_sprite.o \
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f51a55f4e9d0..5cbf5eae2414 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -99,6 +99,7 @@
 #include "intel_pcode.h"
 #include "intel_pipe_crc.h"
 #include "intel_plane_initial.h"
+#include "intel_pmdemand.h"
 #include "intel_pps.h"
 #include "intel_psr.h"
 #include "intel_sdvo.h"
@@ -6352,6 +6353,10 @@ int intel_atomic_check(struct drm_device *dev,
 			return ret;
 	}
 
+	ret = intel_pmdemand_atomic_check(state);
+	if (ret)
+		goto fail;
+
 	ret = intel_atomic_check_crtcs(state);
 	if (ret)
 		goto fail;
@@ -6997,6 +7002,14 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
 		crtc->config = new_crtc_state;
 
+	/*
+	 * In XE_LPD+ Pmdemand combines many parameters such as voltage index,
+	 * plls, cdclk frequency, QGV point selection parameter etc. Voltage
+	 * index, cdclk/ddiclk frequencies are supposed to be configured before
+	 * the cdclk config is set.
+	 */
+	intel_pmdemand_pre_plane_update(state);
+
 	if (state->modeset) {
 		drm_atomic_helper_update_legacy_modeset_state(dev, &state->base);
 
@@ -7116,6 +7129,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 		intel_verify_planes(state);
 
 	intel_sagv_post_plane_update(state);
+	intel_pmdemand_post_plane_update(state);
 
 	drm_atomic_helper_commit_hw_done(&state->base);
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
index dd8e08c8598f..8d2243c71dd8 100644
--- a/drivers/gpu/drm/i915/display/intel_display_core.h
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -345,6 +345,15 @@ struct intel_display {
 		struct intel_global_obj obj;
 	} dbuf;
 
+	struct {
+		wait_queue_head_t waitqueue;
+
+		/* mutex to protect pmdemand programming sequence */
+		struct mutex lock;
+
+		struct intel_global_obj obj;
+	} pmdemand;
+
 	struct {
 		/*
 		 * dkl.phy_lock protects against concurrent access of the
diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
index 60ce10fc7205..dc8de861339d 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -47,6 +47,7 @@
 #include "intel_opregion.h"
 #include "intel_overlay.h"
 #include "intel_plane_initial.h"
+#include "intel_pmdemand.h"
 #include "intel_pps.h"
 #include "intel_quirks.h"
 #include "intel_vga.h"
@@ -211,6 +212,8 @@ int intel_display_driver_probe_noirq(struct drm_i915_private *i915)
 	if (ret < 0)
 		goto cleanup_vga;
 
+	intel_pmdemand_init_early(i915);
+
 	intel_power_domains_init_hw(i915, false);
 
 	if (!HAS_DISPLAY(i915))
@@ -240,6 +243,10 @@ int intel_display_driver_probe_noirq(struct drm_i915_private *i915)
 	if (ret)
 		goto cleanup_vga_client_pw_domain_dmc;
 
+	ret = intel_pmdemand_init(i915);
+	if (ret)
+		goto cleanup_vga_client_pw_domain_dmc;
+
 	init_llist_head(&i915->display.atomic_helper.free_list);
 	INIT_WORK(&i915->display.atomic_helper.free_work,
 		  intel_atomic_helper_free_state_worker);
diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c
index 3b2a287d2041..0b3739310f81 100644
--- a/drivers/gpu/drm/i915/display/intel_display_irq.c
+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
@@ -18,6 +18,7 @@
 #include "intel_fifo_underrun.h"
 #include "intel_gmbus.h"
 #include "intel_hotplug_irq.h"
+#include "intel_pmdemand.h"
 #include "intel_psr.h"
 #include "intel_psr_regs.h"
 
@@ -827,12 +828,27 @@ static u32 gen8_de_pipe_fault_mask(struct drm_i915_private *dev_priv)
 		return GEN8_DE_PIPE_IRQ_FAULT_ERRORS;
 }
 
+static void intel_pmdemand_irq_handler(struct drm_i915_private *dev_priv)
+{
+	wake_up_all(&dev_priv->display.pmdemand.waitqueue);
+}
+
 static void
 gen8_de_misc_irq_handler(struct drm_i915_private *dev_priv, u32 iir)
 {
 	bool found = false;
 
-	if (iir & GEN8_DE_MISC_GSE) {
+	if (DISPLAY_VER(dev_priv) >= 14) {
+		if (iir & (XELPDP_PMDEMAND_RSP |
+			   XELPDP_PMDEMAND_RSPTOUT_ERR)) {
+			if (iir & XELPDP_PMDEMAND_RSPTOUT_ERR)
+				drm_dbg(&dev_priv->drm,
+					"Error waiting for Punit PM Demand Response\n");
+
+			intel_pmdemand_irq_handler(dev_priv);
+			found = true;
+		}
+	} else if (iir & GEN8_DE_MISC_GSE) {
 		intel_opregion_asle_intr(dev_priv);
 		found = true;
 	}
@@ -1576,7 +1592,10 @@ void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
 	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
 		de_port_masked |= BXT_DE_PORT_GMBUS;
 
-	if (DISPLAY_VER(dev_priv) >= 11) {
+	if (DISPLAY_VER(dev_priv) >= 14) {
+		de_misc_masked |= XELPDP_PMDEMAND_RSPTOUT_ERR |
+				  XELPDP_PMDEMAND_RSP;
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
 		enum port port;
 
 		if (intel_bios_is_dsi_present(dev_priv, &port))
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 2f4f00ae2f57..db5437043904 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -20,6 +20,7 @@
 #include "intel_mchbar_regs.h"
 #include "intel_pch_refclk.h"
 #include "intel_pcode.h"
+#include "intel_pmdemand.h"
 #include "intel_pps_regs.h"
 #include "intel_snps_phy.h"
 #include "skl_watermark.h"
@@ -1082,20 +1083,29 @@ void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,
 
 static void gen9_dbuf_enable(struct drm_i915_private *dev_priv)
 {
+	u8 slices_mask;
+
 	dev_priv->display.dbuf.enabled_slices =
 		intel_enabled_dbuf_slices_mask(dev_priv);
 
+	slices_mask = BIT(DBUF_S1) | dev_priv->display.dbuf.enabled_slices;
+
+	if (DISPLAY_VER(dev_priv) >= 14)
+		intel_pmdemand_program_dbuf(dev_priv, slices_mask);
+
 	/*
 	 * Just power up at least 1 slice, we will
 	 * figure out later which slices we have and what we need.
 	 */
-	gen9_dbuf_slices_update(dev_priv, BIT(DBUF_S1) |
-				dev_priv->display.dbuf.enabled_slices);
+	gen9_dbuf_slices_update(dev_priv, slices_mask);
 }
 
 static void gen9_dbuf_disable(struct drm_i915_private *dev_priv)
 {
 	gen9_dbuf_slices_update(dev_priv, 0);
+
+	if (DISPLAY_VER(dev_priv) >= 14)
+		intel_pmdemand_program_dbuf(dev_priv, 0);
 }
 
 static void gen12_dbuf_slices_config(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_setup.c b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
index 5ff99ca7f1de..f6b4923de70a 100644
--- a/drivers/gpu/drm/i915/display/intel_modeset_setup.c
+++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
@@ -26,6 +26,7 @@
 #include "intel_fifo_underrun.h"
 #include "intel_modeset_setup.h"
 #include "intel_pch_display.h"
+#include "intel_pmdemand.h"
 #include "intel_tc.h"
 #include "intel_vblank.h"
 #include "intel_wm.h"
@@ -115,6 +116,8 @@ static void set_encoder_for_connector(struct intel_connector *connector,
 static void reset_encoder_connector_state(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_pmdemand_state *pmdemand_state =
+		to_intel_pmdemand_state(i915->display.pmdemand.obj.state);
 	struct intel_connector *connector;
 	struct drm_connector_list_iter conn_iter;
 
@@ -123,6 +126,10 @@ static void reset_encoder_connector_state(struct intel_encoder *encoder)
 		if (connector->base.encoder != &encoder->base)
 			continue;
 
+		/* Clear the corresponding bit in pmdemand active phys mask */
+		intel_pmdemand_update_phys_mask(i915, encoder,
+						pmdemand_state, true);
+
 		set_encoder_for_connector(connector, NULL);
 
 		connector->base.dpms = DRM_MODE_DPMS_OFF;
@@ -151,6 +158,8 @@ static void intel_crtc_disable_noatomic_complete(struct intel_crtc *crtc)
 		to_intel_cdclk_state(i915->display.cdclk.obj.state);
 	struct intel_dbuf_state *dbuf_state =
 		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	struct intel_pmdemand_state *pmdemand_state =
+		to_intel_pmdemand_state(i915->display.pmdemand.obj.state);
 	struct intel_crtc_state *crtc_state =
 		to_intel_crtc_state(crtc->base.state);
 	enum pipe pipe = crtc->pipe;
@@ -174,6 +183,8 @@ static void intel_crtc_disable_noatomic_complete(struct intel_crtc *crtc)
 
 	bw_state->data_rate[pipe] = 0;
 	bw_state->num_active_planes[pipe] = 0;
+
+	intel_pmdemand_update_port_clock(i915, pmdemand_state, pipe, 0);
 }
 
 /*
@@ -552,6 +563,8 @@ static void intel_sanitize_encoder(struct intel_encoder *encoder)
 	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 	struct intel_crtc_state *crtc_state = crtc ?
 		to_intel_crtc_state(crtc->base.state) : NULL;
+	struct intel_pmdemand_state *pmdemand_state =
+		to_intel_pmdemand_state(i915->display.pmdemand.obj.state);
 
 	/*
 	 * We need to check both for a crtc link (meaning that the encoder is
@@ -575,6 +588,10 @@ static void intel_sanitize_encoder(struct intel_encoder *encoder)
 			    encoder->base.base.id,
 			    encoder->base.name);
 
+		/* Clear the corresponding bit in pmdemand active phys mask */
+		intel_pmdemand_update_phys_mask(i915, encoder,
+						pmdemand_state, true);
+
 		/*
 		 * Connector is active, but has no active pipe. This is fallout
 		 * from our resume register restoring. Disable the encoder
@@ -661,6 +678,9 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 		to_intel_cdclk_state(i915->display.cdclk.obj.state);
 	struct intel_dbuf_state *dbuf_state =
 		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	struct intel_pmdemand_state *pmdemand_state =
+		to_intel_pmdemand_state(i915->display.pmdemand.obj.state);
+	u16 active_phys = 0;
 	enum pipe pipe;
 	struct intel_crtc *crtc;
 	struct intel_encoder *encoder;
@@ -742,6 +762,8 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 
 	drm_connector_list_iter_begin(&i915->drm, &conn_iter);
 	for_each_intel_connector_iter(connector, &conn_iter) {
+		enum phy phy;
+
 		if (connector->get_hw_state(connector)) {
 			struct intel_crtc_state *crtc_state;
 			struct intel_crtc *crtc;
@@ -764,6 +786,10 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 					drm_connector_mask(&connector->base);
 				crtc_state->uapi.encoder_mask |=
 					drm_encoder_mask(&encoder->base);
+
+				phy = intel_port_to_phy(i915, encoder->port);
+				if (!intel_phy_is_tc(i915, phy))
+					active_phys |= BIT(phy);
 			}
 		} else {
 			connector->base.dpms = DRM_MODE_DPMS_OFF;
@@ -776,6 +802,9 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 	}
 	drm_connector_list_iter_end(&conn_iter);
 
+	intel_pmdemand_init_active_phys_mask(i915, pmdemand_state,
+					     active_phys);
+
 	for_each_intel_crtc(&i915->drm, crtc) {
 		struct intel_bw_state *bw_state =
 			to_intel_bw_state(i915->display.bw.obj.state);
@@ -840,9 +869,16 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 		cdclk_state->min_cdclk[crtc->pipe] = min_cdclk;
 		cdclk_state->min_voltage_level[crtc->pipe] =
 			crtc_state->min_voltage_level;
+		pmdemand_state->ddi_clocks[crtc->pipe] =
+			crtc_state->port_clock;
+
+		intel_pmdemand_update_port_clock(i915, pmdemand_state, pipe,
+						 crtc_state->port_clock);
 
 		intel_bw_crtc_update(bw_state, crtc_state);
 	}
+
+	intel_pmdemand_init_pmdemand_params(i915, pmdemand_state);
 }
 
 static void
diff --git a/drivers/gpu/drm/i915/display/intel_pmdemand.c b/drivers/gpu/drm/i915/display/intel_pmdemand.c
new file mode 100644
index 000000000000..3ee943810300
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pmdemand.c
@@ -0,0 +1,714 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include <linux/bitops.h>
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_atomic.h"
+#include "intel_bw.h"
+#include "intel_cdclk.h"
+#include "intel_de.h"
+#include "intel_display_trace.h"
+#include "intel_pmdemand.h"
+#include "skl_watermark.h"
+
+static struct intel_global_state *
+intel_pmdemand_duplicate_state(struct intel_global_obj *obj)
+{
+	struct intel_pmdemand_state *pmdemand_state;
+
+	pmdemand_state = kmemdup(obj->state, sizeof(*pmdemand_state), GFP_KERNEL);
+	if (!pmdemand_state)
+		return NULL;
+
+	return &pmdemand_state->base;
+}
+
+static void intel_pmdemand_destroy_state(struct intel_global_obj *obj,
+					 struct intel_global_state *state)
+{
+	kfree(state);
+}
+
+static const struct intel_global_state_funcs intel_pmdemand_funcs = {
+	.atomic_duplicate_state = intel_pmdemand_duplicate_state,
+	.atomic_destroy_state = intel_pmdemand_destroy_state,
+};
+
+static struct intel_pmdemand_state *
+intel_atomic_get_pmdemand_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_global_state *pmdemand_state =
+		intel_atomic_get_global_obj_state(state,
+						  &i915->display.pmdemand.obj);
+
+	if (IS_ERR(pmdemand_state))
+		return ERR_CAST(pmdemand_state);
+
+	return to_intel_pmdemand_state(pmdemand_state);
+}
+
+static struct intel_pmdemand_state *
+intel_atomic_get_old_pmdemand_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_global_state *pmdemand_state =
+		intel_atomic_get_old_global_obj_state(state,
+						      &i915->display.pmdemand.obj);
+
+	if (!pmdemand_state)
+		return NULL;
+
+	return to_intel_pmdemand_state(pmdemand_state);
+}
+
+static struct intel_pmdemand_state *
+intel_atomic_get_new_pmdemand_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_global_state *pmdemand_state =
+		intel_atomic_get_new_global_obj_state(state,
+						      &i915->display.pmdemand.obj);
+
+	if (!pmdemand_state)
+		return NULL;
+
+	return to_intel_pmdemand_state(pmdemand_state);
+}
+
+int intel_pmdemand_init(struct drm_i915_private *i915)
+{
+	struct intel_pmdemand_state *pmdemand_state;
+
+	pmdemand_state = kzalloc(sizeof(*pmdemand_state), GFP_KERNEL);
+	if (!pmdemand_state)
+		return -ENOMEM;
+
+	intel_atomic_global_obj_init(i915, &i915->display.pmdemand.obj,
+				     &pmdemand_state->base,
+				     &intel_pmdemand_funcs);
+
+	if (IS_MTL_DISPLAY_STEP(i915, STEP_A0, STEP_C0))
+		/* Wa_14016740474 */
+		intel_de_rmw(i915, XELPD_CHICKEN_DCPR_3, 0, DMD_RSP_TIMEOUT_DISABLE);
+
+	return 0;
+}
+
+void intel_pmdemand_init_early(struct drm_i915_private *i915)
+{
+	mutex_init(&i915->display.pmdemand.lock);
+	init_waitqueue_head(&i915->display.pmdemand.waitqueue);
+}
+
+void
+intel_pmdemand_init_active_phys_mask(struct drm_i915_private *i915,
+				     struct intel_pmdemand_state *pmdemand_state,
+				     u16 active_phys)
+{
+	if (DISPLAY_VER(i915) < 14)
+		return;
+
+	pmdemand_state->active_phys_mask = active_phys;
+}
+
+void
+intel_pmdemand_update_phys_mask(struct drm_i915_private *i915,
+				struct intel_encoder *encoder,
+				struct intel_pmdemand_state *pmdemand_state,
+				bool clear_bit)
+{
+	enum phy phy;
+
+	if (DISPLAY_VER(i915) < 14)
+		return;
+
+	if (!encoder)
+		return;
+
+	phy = intel_port_to_phy(i915, encoder->port);
+	if (intel_phy_is_tc(i915, phy))
+		return;
+
+	if (clear_bit)
+		pmdemand_state->active_phys_mask &= ~BIT(phy);
+	else
+		pmdemand_state->active_phys_mask |= BIT(phy);
+}
+
+void
+intel_pmdemand_update_port_clock(struct drm_i915_private *i915,
+				 struct intel_pmdemand_state *pmdemand_state,
+				 enum pipe pipe, int port_clock)
+{
+	if (DISPLAY_VER(i915) < 14)
+		return;
+
+	pmdemand_state->ddi_clocks[pipe] = port_clock;
+}
+
+static void
+intel_pmdemand_update_max_ddiclk(struct drm_i915_private *i915,
+				 struct intel_atomic_state *state,
+				 struct intel_pmdemand_state *pmdemand_state)
+{
+	int max_ddiclk = 0;
+	struct intel_crtc *crtc;
+	int i;
+	const struct intel_crtc_state *new_crtc_state;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
+		intel_pmdemand_update_port_clock(i915, pmdemand_state,
+						 crtc->pipe,
+						 new_crtc_state->port_clock);
+
+	for (i = 0; i < ARRAY_SIZE(pmdemand_state->ddi_clocks); i++)
+		max_ddiclk = max(pmdemand_state->ddi_clocks[i], max_ddiclk);
+
+	pmdemand_state->params.ddiclk_max = DIV_ROUND_UP(max_ddiclk, 1000);
+}
+
+static void
+intel_pmdemand_update_connector_phys(struct drm_i915_private *i915,
+				     struct intel_atomic_state *state,
+				     struct drm_connector_state *conn_state,
+				     bool for_old_state,
+				     struct intel_pmdemand_state *pmdemand_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(conn_state->crtc);
+	struct intel_encoder *encoder = to_intel_encoder(conn_state->best_encoder);
+	struct intel_crtc_state *crtc_state;
+
+	if (!crtc)
+		return;
+
+	if (for_old_state)
+		crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
+	else
+		crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+
+	if (!crtc_state->hw.active)
+		return;
+
+	intel_pmdemand_update_phys_mask(i915, encoder, pmdemand_state,
+					for_old_state);
+}
+
+static void
+intel_pmdemand_update_active_non_tc_phys(struct drm_i915_private *i915,
+					 struct intel_atomic_state *state,
+					 struct intel_pmdemand_state *pmdemand_state)
+{
+	struct drm_connector *connector;
+	int i;
+	struct drm_connector_state *old_conn_state, *new_conn_state;
+
+	for_each_oldnew_connector_in_state(&state->base, connector,
+					   old_conn_state, new_conn_state, i) {
+		if (!intel_connector_needs_modeset(state, connector))
+			continue;
+
+		/* First clear the active phys in the old connector state */
+		intel_pmdemand_update_connector_phys(i915, state,
+						     old_conn_state, true,
+						     pmdemand_state);
+
+		/* Then set the active phys in new connector state */
+		intel_pmdemand_update_connector_phys(i915, state,
+						     new_conn_state, false,
+						     pmdemand_state);
+	}
+
+	pmdemand_state->params.active_phys =
+		hweight16(pmdemand_state->active_phys_mask);
+}
+
+static bool
+intel_pmdemand_encoder_has_tc_phy(struct drm_i915_private *i915,
+				  struct intel_encoder *encoder)
+{
+	enum phy phy;
+
+	if (!encoder)
+		return false;
+
+	phy = intel_port_to_phy(i915, encoder->port);
+	if (intel_phy_is_tc(i915, phy))
+		return true;
+
+	return false;
+}
+
+static bool
+intel_pmdemand_connector_needs_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct drm_connector *connector;
+	struct drm_connector_state *new_conn_state, *old_conn_state;
+	int i;
+
+	for_each_oldnew_connector_in_state(&state->base, connector,
+					   old_conn_state, new_conn_state, i) {
+		struct intel_encoder *old_encoder =
+			to_intel_encoder(old_conn_state->best_encoder);
+		struct intel_encoder *new_encoder =
+			to_intel_encoder(new_conn_state->best_encoder);
+
+		if (!intel_connector_needs_modeset(state, connector))
+			continue;
+
+		if (old_encoder == new_encoder ||
+		    (intel_pmdemand_encoder_has_tc_phy(i915, old_encoder) &&
+		     intel_pmdemand_encoder_has_tc_phy(i915, new_encoder)))
+			continue;
+
+		return true;
+	}
+
+	return false;
+}
+
+static bool intel_pmdemand_needs_update(struct intel_atomic_state *state)
+{
+	struct intel_crtc *crtc;
+	int i;
+	const struct intel_bw_state *new_bw_state, *old_bw_state;
+	const struct intel_cdclk_state *new_cdclk_state, *old_cdclk_state;
+	const struct intel_crtc_state *new_crtc_state, *old_crtc_state;
+	const struct intel_dbuf_state *new_dbuf_state, *old_dbuf_state;
+
+	new_bw_state = intel_atomic_get_new_bw_state(state);
+	old_bw_state = intel_atomic_get_old_bw_state(state);
+	if (new_bw_state && new_bw_state->qgv_point_peakbw !=
+	    old_bw_state->qgv_point_peakbw)
+		return true;
+
+	new_dbuf_state = intel_atomic_get_new_dbuf_state(state);
+	old_dbuf_state = intel_atomic_get_old_dbuf_state(state);
+	if (new_dbuf_state &&
+	    (new_dbuf_state->active_pipes !=
+	     old_dbuf_state->active_pipes ||
+	     new_dbuf_state->enabled_slices !=
+	     old_dbuf_state->enabled_slices))
+		return true;
+
+	new_cdclk_state = intel_atomic_get_new_cdclk_state(state);
+	old_cdclk_state = intel_atomic_get_old_cdclk_state(state);
+	if (new_cdclk_state &&
+	    (new_cdclk_state->actual.cdclk !=
+	     old_cdclk_state->actual.cdclk ||
+	     new_cdclk_state->actual.voltage_level !=
+	     old_cdclk_state->actual.voltage_level))
+		return true;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i)
+		if (new_crtc_state->port_clock != old_crtc_state->port_clock)
+			return true;
+
+	if (intel_pmdemand_connector_needs_update(state))
+		return true;
+
+	return false;
+}
+
+int intel_pmdemand_atomic_check(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *new_bw_state;
+	const struct intel_cdclk_state *new_cdclk_state;
+	const struct intel_dbuf_state *new_dbuf_state;
+	struct intel_pmdemand_state *new_pmdemand_state;
+	int ret;
+
+	if (DISPLAY_VER(i915) < 14)
+		return 0;
+
+	if (!intel_pmdemand_needs_update(state))
+		return 0;
+
+	new_pmdemand_state = intel_atomic_get_pmdemand_state(state);
+	if (IS_ERR(new_pmdemand_state))
+		return PTR_ERR(new_pmdemand_state);
+
+	ret = intel_atomic_lock_global_state(&new_pmdemand_state->base);
+	if (ret)
+		return ret;
+
+	new_bw_state = intel_atomic_get_bw_state(state);
+	if (IS_ERR(new_bw_state))
+		return PTR_ERR(new_bw_state);
+
+	/* firmware will calculate the qclck_gc_index, requirement is set to 0 */
+	new_pmdemand_state->params.qclk_gv_index = 0;
+	new_pmdemand_state->params.qclk_gv_bw = new_bw_state->qgv_point_peakbw;
+
+	new_dbuf_state = intel_atomic_get_dbuf_state(state);
+	if (IS_ERR(new_dbuf_state))
+		return PTR_ERR(new_dbuf_state);
+
+	new_pmdemand_state->params.active_pipes =
+		min_t(u8, hweight8(new_dbuf_state->active_pipes), 3);
+	new_pmdemand_state->params.active_dbufs =
+		min_t(u8, hweight8(new_dbuf_state->enabled_slices), 3);
+
+	new_cdclk_state = intel_atomic_get_cdclk_state(state);
+	if (IS_ERR(new_cdclk_state))
+		return PTR_ERR(new_cdclk_state);
+
+	new_pmdemand_state->params.voltage_index =
+		new_cdclk_state->actual.voltage_level;
+	new_pmdemand_state->params.cdclk_freq_mhz =
+		DIV_ROUND_UP(new_cdclk_state->actual.cdclk, 1000);
+
+	intel_pmdemand_update_max_ddiclk(i915, state, new_pmdemand_state);
+
+	intel_pmdemand_update_active_non_tc_phys(i915, state, new_pmdemand_state);
+
+	/*
+	 * Setting scalers to max as it can not be calculated during flips and
+	 * fastsets without taking global states locks.
+	 */
+	new_pmdemand_state->params.scalers = 7;
+
+	/*
+	 * If no modesetting is allowed, it doesn't allow adding additional
+	 * crtcs to the state. So we cannot call serialize here.
+	 */
+	if (!state->base.allow_modeset)
+		return 0;
+
+	return intel_atomic_serialize_global_state(&new_pmdemand_state->base);
+}
+
+static bool intel_pmdemand_check_prev_transaction(struct drm_i915_private *i915)
+{
+	return !(intel_de_wait_for_clear(i915,
+					 XELPDP_INITIATE_PMDEMAND_REQUEST(1),
+					 XELPDP_PMDEMAND_REQ_ENABLE, 10) ||
+		 intel_de_wait_for_clear(i915,
+					 GEN12_DCPR_STATUS_1,
+					 XELPDP_PMDEMAND_INFLIGHT_STATUS, 10));
+}
+
+void
+intel_pmdemand_init_pmdemand_params(struct drm_i915_private *i915,
+				    struct intel_pmdemand_state *pmdemand_state)
+{
+	u32 reg1, reg2;
+
+	if (DISPLAY_VER(i915) < 14)
+		return;
+
+	mutex_lock(&i915->display.pmdemand.lock);
+	if (drm_WARN_ON(&i915->drm,
+			!intel_pmdemand_check_prev_transaction(i915)))
+		goto unlock;
+
+	reg1 = intel_de_read(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(0));
+
+	reg2 = intel_de_read(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(1));
+
+	/* Set 1*/
+	pmdemand_state->params.qclk_gv_bw =
+		REG_FIELD_GET(XELPDP_PMDEMAND_QCLK_GV_BW_MASK, reg1);
+	pmdemand_state->params.voltage_index =
+		REG_FIELD_GET(XELPDP_PMDEMAND_VOLTAGE_INDEX_MASK, reg1);
+	pmdemand_state->params.qclk_gv_index =
+		REG_FIELD_GET(XELPDP_PMDEMAND_QCLK_GV_INDEX_MASK, reg1);
+	pmdemand_state->params.active_pipes =
+		REG_FIELD_GET(XELPDP_PMDEMAND_PIPES_MASK, reg1);
+	pmdemand_state->params.active_dbufs =
+		REG_FIELD_GET(XELPDP_PMDEMAND_DBUFS_MASK, reg1);
+	pmdemand_state->params.active_phys =
+		REG_FIELD_GET(XELPDP_PMDEMAND_PHYS_MASK, reg1);
+
+	/* Set 2*/
+	pmdemand_state->params.cdclk_freq_mhz =
+		REG_FIELD_GET(XELPDP_PMDEMAND_CDCLK_FREQ_MASK, reg2);
+	pmdemand_state->params.ddiclk_max =
+		REG_FIELD_GET(XELPDP_PMDEMAND_DDICLK_FREQ_MASK, reg2);
+	pmdemand_state->params.scalers =
+		REG_FIELD_GET(XELPDP_PMDEMAND_SCALERS_MASK, reg2);
+
+unlock:
+	memset(&pmdemand_state->params, 0, sizeof(pmdemand_state->params));
+	mutex_unlock(&i915->display.pmdemand.lock);
+}
+
+static bool intel_pmdemand_req_complete(struct drm_i915_private *i915)
+{
+	return !(intel_de_read(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(1)) &
+		 XELPDP_PMDEMAND_REQ_ENABLE);
+}
+
+static void intel_pmdemand_wait(struct drm_i915_private *i915)
+{
+	if (!wait_event_timeout(i915->display.pmdemand.waitqueue,
+				intel_pmdemand_req_complete(i915),
+				msecs_to_jiffies_timeout(10)))
+		drm_err(&i915->drm,
+			"timed out waiting for Punit PM Demand Response\n");
+}
+
+/* Required to be programmed during Display Init Sequences. */
+void intel_pmdemand_program_dbuf(struct drm_i915_private *i915,
+				 u8 dbuf_slices)
+{
+	u32 dbufs = min_t(u32, hweight8(dbuf_slices), 3);
+
+	mutex_lock(&i915->display.pmdemand.lock);
+	if (drm_WARN_ON(&i915->drm,
+			!intel_pmdemand_check_prev_transaction(i915)))
+		goto unlock;
+
+	intel_de_rmw(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(0),
+		     XELPDP_PMDEMAND_DBUFS_MASK, XELPDP_PMDEMAND_DBUFS(dbufs));
+	intel_de_rmw(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(1), 0,
+		     XELPDP_PMDEMAND_REQ_ENABLE);
+
+	intel_pmdemand_wait(i915);
+
+unlock:
+	mutex_unlock(&i915->display.pmdemand.lock);
+}
+
+static void
+intel_pmdemand_update_params(const struct intel_pmdemand_state *new,
+			     const struct intel_pmdemand_state *old,
+			     u32 *reg1, u32 *reg2, bool serialized)
+{
+	u32 plls, tmp, current_val;
+
+	/*
+	 * The pmdemand parameter updates happens in two steps. Pre plane and
+	 * post plane updates. During the pre plane, as DE might still be
+	 * handling with some old operations, to avoid unexpected performance
+	 * issues, program the pmdemand parameters with higher of old and new
+	 * values. And then after once settled, use the new parameter values
+	 * as part of the post plane update.
+	 *
+	 * If the pmdemand params update happens without modeset allowed, this
+	 * means we can't serialize the updates. So that implies possbility of
+	 * some parallel atomic commits affecting the pmdemand parameters. In
+	 * that case, we need to consider the current values from the register
+	 * as well. So in pre-plane case, we need to check the max of old, new
+	 * and current register value if not serialized. In post plance update
+	 * we need to consider max of new and current register value if not
+	 * serialized
+	 */
+
+	/* Set 1*/
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_QCLK_GV_BW_MASK, *reg1);
+	*reg1 &= ~XELPDP_PMDEMAND_QCLK_GV_BW_MASK;
+	tmp = old ? max(old->params.qclk_gv_bw, new->params.qclk_gv_bw) :
+		    new->params.qclk_gv_bw;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg1 |= XELPDP_PMDEMAND_QCLK_GV_BW(tmp);
+
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_VOLTAGE_INDEX_MASK, *reg1);
+	*reg1 &= ~XELPDP_PMDEMAND_VOLTAGE_INDEX_MASK;
+	tmp = old ? max(old->params.voltage_index, new->params.voltage_index) :
+		    new->params.voltage_index;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg1 |= XELPDP_PMDEMAND_VOLTAGE_INDEX(tmp);
+
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_QCLK_GV_INDEX_MASK, *reg1);
+	*reg1 &= ~XELPDP_PMDEMAND_QCLK_GV_INDEX_MASK;
+	tmp = old ? max(old->params.qclk_gv_index, new->params.qclk_gv_index) :
+		    new->params.qclk_gv_index;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg1 |= XELPDP_PMDEMAND_QCLK_GV_INDEX(tmp);
+
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_PIPES_MASK, *reg1);
+	*reg1 &= ~XELPDP_PMDEMAND_PIPES_MASK;
+	tmp = old ? max(old->params.active_pipes, new->params.active_pipes) :
+		    new->params.active_pipes;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg1 |= XELPDP_PMDEMAND_PIPES(tmp);
+
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_DBUFS_MASK, *reg1);
+	*reg1 &= ~XELPDP_PMDEMAND_DBUFS_MASK;
+	tmp = old ? max(old->params.active_dbufs, new->params.active_dbufs) :
+		    new->params.active_dbufs;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg1 |= XELPDP_PMDEMAND_DBUFS(tmp);
+
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_PHYS_MASK, *reg1);
+	*reg1 &= ~XELPDP_PMDEMAND_PHYS_MASK;
+	plls = old ? max(old->params.active_phys, new->params.active_phys) :
+		     new->params.active_phys;
+	if (!serialized)
+		plls = max(plls, current_val);
+	plls = min_t(u32, plls, 7);
+	*reg1 |= XELPDP_PMDEMAND_PHYS(plls);
+
+	/* Set 2*/
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_CDCLK_FREQ_MASK, *reg2);
+	*reg2 &= ~XELPDP_PMDEMAND_CDCLK_FREQ_MASK;
+	tmp = old ? max(old->params.cdclk_freq_mhz,
+			new->params.cdclk_freq_mhz) :
+		    new->params.cdclk_freq_mhz;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg2 |= XELPDP_PMDEMAND_CDCLK_FREQ(tmp);
+
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_DDICLK_FREQ_MASK, *reg2);
+	*reg2 &= ~XELPDP_PMDEMAND_DDICLK_FREQ_MASK;
+	tmp = old ? max(old->params.ddiclk_max, new->params.ddiclk_max) :
+		    new->params.ddiclk_max;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg2 |= XELPDP_PMDEMAND_DDICLK_FREQ(tmp);
+
+	current_val = REG_FIELD_GET(XELPDP_PMDEMAND_SCALERS_MASK, *reg2);
+	*reg2 &= ~XELPDP_PMDEMAND_SCALERS_MASK;
+	tmp = old ? max(old->params.scalers, new->params.scalers) :
+		    new->params.scalers;
+	if (!serialized)
+		tmp = max(tmp, current_val);
+	*reg2 |= XELPDP_PMDEMAND_SCALERS(tmp);
+
+	/*
+	 * Active_PLLs starts with 1 because of CDCLK PLL.
+	 * TODO: Missing to account genlock filter when it gets used.
+	 */
+	plls = min_t(u32, plls + 1, 7);
+	*reg2 &= ~XELPDP_PMDEMAND_PLLS_MASK;
+	*reg2 |= XELPDP_PMDEMAND_PLLS(plls);
+}
+
+static void
+intel_pmdemand_program_params(struct drm_i915_private *i915,
+			      const struct intel_pmdemand_state *new,
+			      const struct intel_pmdemand_state *old,
+			      bool serialized)
+{
+	bool changed = false;
+	u32 reg1, mod_reg1;
+	u32 reg2, mod_reg2;
+
+	mutex_lock(&i915->display.pmdemand.lock);
+	if (drm_WARN_ON(&i915->drm,
+			!intel_pmdemand_check_prev_transaction(i915)))
+		goto unlock;
+
+	reg1 = intel_de_read(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(0));
+	mod_reg1 = reg1;
+
+	reg2 = intel_de_read(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(1));
+	mod_reg2 = reg2;
+
+	intel_pmdemand_update_params(new, old, &mod_reg1, &mod_reg2,
+				     serialized);
+
+	if (reg1 != mod_reg1) {
+		intel_de_write(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(0),
+			       mod_reg1);
+		changed = true;
+	}
+
+	if (reg2 != mod_reg2) {
+		intel_de_write(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(1),
+			       mod_reg2);
+		changed = true;
+	}
+
+	/* Initiate pm demand request only if register values are changed */
+	if (!changed)
+		goto unlock;
+
+	drm_dbg_kms(&i915->drm,
+		    "initate pmdemand request values: (0x%x 0x%x)\n",
+		    mod_reg1, mod_reg2);
+
+	intel_de_rmw(i915, XELPDP_INITIATE_PMDEMAND_REQUEST(1), 0,
+		     XELPDP_PMDEMAND_REQ_ENABLE);
+
+	intel_pmdemand_wait(i915);
+
+unlock:
+	mutex_unlock(&i915->display.pmdemand.lock);
+}
+
+static bool
+intel_pmdemand_state_changed(const struct intel_pmdemand_state *new,
+			     const struct intel_pmdemand_state *old)
+{
+	return memcmp(&new->params, &old->params, sizeof(new->params)) != 0;
+}
+
+static bool
+intel_pmdemand_check_serialized(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			intel_atomic_get_new_crtc_state(state, crtc);
+		if (!crtc_state)
+			return false;
+	}
+
+	return true;
+}
+
+void intel_pmdemand_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_pmdemand_state *new_pmdemand_state =
+		intel_atomic_get_new_pmdemand_state(state);
+	const struct intel_pmdemand_state *old_pmdemand_state =
+		intel_atomic_get_old_pmdemand_state(state);
+	bool serialized;
+
+	if (DISPLAY_VER(i915) < 14)
+		return;
+
+	if (!new_pmdemand_state ||
+	    !intel_pmdemand_state_changed(new_pmdemand_state,
+					  old_pmdemand_state))
+		return;
+
+	serialized = intel_pmdemand_check_serialized(state);
+
+	WARN_ON(!new_pmdemand_state->base.changed);
+
+	intel_pmdemand_program_params(i915, new_pmdemand_state,
+				      old_pmdemand_state, serialized);
+}
+
+void intel_pmdemand_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_pmdemand_state *new_pmdemand_state =
+		intel_atomic_get_new_pmdemand_state(state);
+	const struct intel_pmdemand_state *old_pmdemand_state =
+		intel_atomic_get_old_pmdemand_state(state);
+	bool serialized;
+
+	if (DISPLAY_VER(i915) < 14)
+		return;
+
+	if (!new_pmdemand_state ||
+	    !intel_pmdemand_state_changed(new_pmdemand_state,
+					  old_pmdemand_state))
+		return;
+
+	serialized = intel_pmdemand_check_serialized(state);
+
+	WARN_ON(!new_pmdemand_state->base.changed);
+
+	intel_pmdemand_program_params(i915, new_pmdemand_state, NULL,
+				      serialized);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_pmdemand.h b/drivers/gpu/drm/i915/display/intel_pmdemand.h
new file mode 100644
index 000000000000..9ff3eefb600a
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_pmdemand.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef __INTEL_PMDEMAND_H__
+#define __INTEL_PMDEMAND_H__
+
+#include "intel_display_limits.h"
+#include "intel_global_state.h"
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc_state;
+struct intel_encoder;
+struct intel_plane_state;
+
+struct pmdemand_params {
+	u16 qclk_gv_bw;
+	u8 voltage_index;
+	u8 qclk_gv_index;
+	u8 active_pipes;
+	u8 active_dbufs;
+	/* Total number of non type C active phys from active_phys_mask */
+	u8 active_phys;
+	u16 cdclk_freq_mhz;
+	/* max from ddi_clocks[] */
+	u16 ddiclk_max;
+	u8 scalers;
+};
+
+struct intel_pmdemand_state {
+	struct intel_global_state base;
+
+	/* Maintain a persistent list of port clocks across all crtcs */
+	int ddi_clocks[I915_MAX_PIPES];
+
+	/* Maintain a persistent list of non type C phys mask */
+	u16 active_phys_mask;
+
+	/* Parameters to be configured in the pmdemand registers */
+	struct pmdemand_params params;
+};
+
+#define to_intel_pmdemand_state(x) container_of((x), \
+						struct intel_pmdemand_state, \
+						base)
+
+void intel_pmdemand_init_early(struct drm_i915_private *i915);
+int intel_pmdemand_init(struct drm_i915_private *i915);
+void intel_pmdemand_init_pmdemand_params(struct drm_i915_private *i915,
+					 struct intel_pmdemand_state *pmdemand_state);
+void intel_pmdemand_init_active_phys_mask(struct drm_i915_private *i915,
+					  struct intel_pmdemand_state *pmdemand_state,
+					  u16 active_phys);
+void intel_pmdemand_update_port_clock(struct drm_i915_private *i915,
+				      struct intel_pmdemand_state *pmdemand_state,
+				      enum pipe pipe, int port_clock);
+void intel_pmdemand_update_phys_mask(struct drm_i915_private *i915,
+				     struct intel_encoder *encoder,
+				     struct intel_pmdemand_state *pmdemand_state,
+				     bool clear_bit);
+void intel_pmdemand_program_dbuf(struct drm_i915_private *i915,
+				 u8 dbuf_slices);
+void intel_pmdemand_pre_plane_update(struct intel_atomic_state *state);
+void intel_pmdemand_post_plane_update(struct intel_atomic_state *state);
+int intel_pmdemand_atomic_check(struct intel_atomic_state *state);
+
+#endif /* __INTEL_PMDEMAND_H__ */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0523418129c5..6d34d9f59b1c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4418,8 +4418,10 @@
 #define GEN8_DE_MISC_IMR _MMIO(0x44464)
 #define GEN8_DE_MISC_IIR _MMIO(0x44468)
 #define GEN8_DE_MISC_IER _MMIO(0x4446c)
-#define  GEN8_DE_MISC_GSE		(1 << 27)
-#define  GEN8_DE_EDP_PSR		(1 << 19)
+#define  XELPDP_PMDEMAND_RSPTOUT_ERR	REG_BIT(27)
+#define  GEN8_DE_MISC_GSE		REG_BIT(27)
+#define  GEN8_DE_EDP_PSR		REG_BIT(19)
+#define  XELPDP_PMDEMAND_RSP		REG_BIT(3)
 
 #define GEN8_PCU_ISR _MMIO(0x444e0)
 #define GEN8_PCU_IMR _MMIO(0x444e4)
@@ -4504,6 +4506,33 @@
 #define  XELPDP_DP_ALT_HPD_LONG_DETECT		REG_BIT(1)
 #define  XELPDP_DP_ALT_HPD_SHORT_DETECT		REG_BIT(0)
 
+#define XELPDP_INITIATE_PMDEMAND_REQUEST(dword)		_MMIO(0x45230 + 4 * (dword))
+#define  XELPDP_PMDEMAND_QCLK_GV_BW_MASK		REG_GENMASK(31, 16)
+#define  XELPDP_PMDEMAND_QCLK_GV_BW(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_QCLK_GV_BW_MASK, x)
+#define  XELPDP_PMDEMAND_VOLTAGE_INDEX_MASK		REG_GENMASK(14, 12)
+#define  XELPDP_PMDEMAND_VOLTAGE_INDEX(x)		REG_FIELD_PREP(XELPDP_PMDEMAND_VOLTAGE_INDEX_MASK, x)
+#define  XELPDP_PMDEMAND_QCLK_GV_INDEX_MASK		REG_GENMASK(11, 8)
+#define  XELPDP_PMDEMAND_QCLK_GV_INDEX(x)		REG_FIELD_PREP(XELPDP_PMDEMAND_QCLK_GV_INDEX_MASK, x)
+#define  XELPDP_PMDEMAND_PIPES_MASK			REG_GENMASK(7, 6)
+#define  XELPDP_PMDEMAND_PIPES(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_PIPES_MASK, x)
+#define  XELPDP_PMDEMAND_DBUFS_MASK			REG_GENMASK(5, 4)
+#define  XELPDP_PMDEMAND_DBUFS(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_DBUFS_MASK, x)
+#define  XELPDP_PMDEMAND_PHYS_MASK			REG_GENMASK(2, 0)
+#define  XELPDP_PMDEMAND_PHYS(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_PHYS_MASK, x)
+
+#define  XELPDP_PMDEMAND_REQ_ENABLE			REG_BIT(31)
+#define  XELPDP_PMDEMAND_CDCLK_FREQ_MASK		REG_GENMASK(30, 20)
+#define  XELPDP_PMDEMAND_CDCLK_FREQ(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_CDCLK_FREQ_MASK, x)
+#define  XELPDP_PMDEMAND_DDICLK_FREQ_MASK		REG_GENMASK(18, 8)
+#define  XELPDP_PMDEMAND_DDICLK_FREQ(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_DDICLK_FREQ_MASK, x)
+#define  XELPDP_PMDEMAND_SCALERS_MASK			REG_GENMASK(6, 4)
+#define  XELPDP_PMDEMAND_SCALERS(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_SCALERS_MASK, x)
+#define  XELPDP_PMDEMAND_PLLS_MASK			REG_GENMASK(2, 0)
+#define  XELPDP_PMDEMAND_PLLS(x)			REG_FIELD_PREP(XELPDP_PMDEMAND_PLLS_MASK, x)
+
+#define GEN12_DCPR_STATUS_1				_MMIO(0x46440)
+#define  XELPDP_PMDEMAND_INFLIGHT_STATUS		REG_BIT(26)
+
 #define ILK_DISPLAY_CHICKEN2	_MMIO(0x42004)
 /* Required on all Ironlake and Sandybridge according to the B-Spec. */
 #define   ILK_ELPIN_409_SELECT	REG_BIT(25)
@@ -4663,6 +4692,9 @@
 #define   DCPR_SEND_RESP_IMM			REG_BIT(25)
 #define   DCPR_CLEAR_MEMSTAT_DIS		REG_BIT(24)
 
+#define XELPD_CHICKEN_DCPR_3			_MMIO(0x46438)
+#define   DMD_RSP_TIMEOUT_DISABLE		REG_BIT(19)
+
 #define SKL_DFSM			_MMIO(0x51000)
 #define   SKL_DFSM_DISPLAY_PM_DISABLE	(1 << 27)
 #define   SKL_DFSM_DISPLAY_HDCP_DISABLE	(1 << 25)
