diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 5c9222283044..43fb485c0e02 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5191,6 +5191,9 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
 		goto out_vdd_off;
 	}
 
+	/* Set up override EDID, if any, from ACPI OpRegion */
+	intel_opregion_edid_probe(intel_connector);
+
 	mutex_lock(&dev->mode_config.mutex);
 	edid = drm_get_edid(connector, &intel_dp->aux.ddc);
 	if (edid) {
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c
index dfd724e506b5..ef8d38f041eb 100644
--- a/drivers/gpu/drm/i915/display/intel_opregion.c
+++ b/drivers/gpu/drm/i915/display/intel_opregion.c
@@ -196,6 +196,8 @@ struct opregion_asle_ext {
 #define ASLE_IUER_WINDOWS_BTN		(1 << 1)
 #define ASLE_IUER_POWER_BTN		(1 << 0)
 
+#define ASLE_PHED_EDID_VALID_MASK	0x3
+
 /* Software System Control Interrupt (SWSCI) */
 #define SWSCI_SCIC_INDICATOR		(1 << 0)
 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT	1
@@ -909,8 +911,10 @@ int intel_opregion_setup(struct drm_i915_private *dev_priv)
 		opregion->asle->ardy = ASLE_ARDY_NOT_READY;
 	}
 
-	if (mboxes & MBOX_ASLE_EXT)
+	if (mboxes & MBOX_ASLE_EXT) {
 		drm_dbg(&dev_priv->drm, "ASLE extension supported\n");
+		opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
+	}
 
 	if (intel_load_vbt_firmware(dev_priv) == 0)
 		goto out;
@@ -1037,6 +1041,68 @@ intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
 	return ret - 1;
 }
 
+/**
+ * intel_opregion_edid_probe - Add EDID from ACPI OpRegion mailbox #5
+ * @intel_connector: eDP connector
+ *
+ * This reads the ACPI Opregion mailbox #5 to extract the EDID that is passed
+ * to it.
+ *
+ * Will take a lock on the DRM mode_config to add the EDID; make sure it isn't
+ * called with lock taken.
+ *
+ */
+void intel_opregion_edid_probe(struct intel_connector *intel_connector)
+{
+	struct drm_connector *connector = &intel_connector->base;
+	struct drm_i915_private *i915 = to_i915(connector->dev);
+	struct intel_opregion *opregion = &i915->opregion;
+	const void *in_edid;
+	const struct edid *edid;
+	struct edid *new_edid;
+	int len, ret, num;
+
+	if (!opregion->asle_ext || connector->override_edid)
+		return;
+
+	in_edid = opregion->asle_ext->bddc;
+
+	/* Validity corresponds to number of 128-byte blocks */
+	len = (opregion->asle_ext->phed & ASLE_PHED_EDID_VALID_MASK) * 128;
+	if (!len || !memchr_inv(in_edid, 0, len))
+		return;
+
+	edid = in_edid;
+
+	if (len < EDID_LENGTH * (1 + edid->extensions)) {
+		drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5)\n");
+		return;
+	}
+	new_edid = drm_edid_duplicate(edid);
+	if (!new_edid) {
+		drm_err(&i915->drm, "Cannot duplicate EDID\n");
+		return;
+	}
+	if (!drm_edid_is_valid(new_edid)) {
+		kfree(new_edid);
+		drm_dbg_kms(&i915->drm, "Cannot validate EDID in ACPI OpRegion (Mailbox #5)\n");
+		return;
+	}
+
+	ret = drm_connector_update_edid_property(connector, new_edid);
+	if (ret) {
+		kfree(new_edid);
+		return;
+	}
+
+	mutex_lock(&connector->dev->mode_config.mutex);
+	num = drm_add_edid_modes(connector, new_edid);
+	mutex_unlock(&connector->dev->mode_config.mutex);
+
+	drm_dbg_kms(&i915->drm, "Using OpRegion EDID for [CONNECTOR:%d:%s], added %d mode(s)\n",
+		    connector->base.id, connector->name, num);
+}
+
 void intel_opregion_register(struct drm_i915_private *i915)
 {
 	struct intel_opregion *opregion = &i915->opregion;
@@ -1127,6 +1193,7 @@ void intel_opregion_unregister(struct drm_i915_private *i915)
 	opregion->acpi = NULL;
 	opregion->swsci = NULL;
 	opregion->asle = NULL;
+	opregion->asle_ext = NULL;
 	opregion->vbt = NULL;
 	opregion->lid_state = NULL;
 }
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.h b/drivers/gpu/drm/i915/display/intel_opregion.h
index 4aa68ffbd30e..c1ecfcbb6f55 100644
--- a/drivers/gpu/drm/i915/display/intel_opregion.h
+++ b/drivers/gpu/drm/i915/display/intel_opregion.h
@@ -29,12 +29,14 @@
 #include <linux/pci.h>
 
 struct drm_i915_private;
+struct intel_connector;
 struct intel_encoder;
 
 struct opregion_header;
 struct opregion_acpi;
 struct opregion_swsci;
 struct opregion_asle;
+struct opregion_asle_ext;
 
 struct intel_opregion {
 	struct opregion_header *header;
@@ -43,6 +45,7 @@ struct intel_opregion {
 	u32 swsci_gbda_sub_functions;
 	u32 swsci_sbcb_sub_functions;
 	struct opregion_asle *asle;
+	struct opregion_asle_ext *asle_ext;
 	void *rvda;
 	void *vbt_firmware;
 	const void *vbt;
@@ -71,6 +74,7 @@ int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
 				  pci_power_t state);
 int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
+void intel_opregion_edid_probe(struct intel_connector *connector);
 
 #else /* CONFIG_ACPI*/
 
@@ -117,6 +121,10 @@ static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
 	return -ENODEV;
 }
 
+void intel_opregion_edid_probe(struct intel_connector *connector)
+{
+}
+
 #endif /* CONFIG_ACPI */
 
 #endif
