diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f07081815b80..43caee6d3c2f 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6685,6 +6685,20 @@ bool intel_port_is_combophy(struct drm_i915_private *dev_priv, enum port port)
 	return false;
 }
 
+bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
+{
+	if (phy == PHY_NONE)
+		return false;
+
+	if (IS_ELKHARTLAKE(dev_priv))
+		return phy <= PHY_C;
+
+	if (INTEL_GEN(dev_priv) >= 11)
+		return phy <= PHY_B;
+
+	return false;
+}
+
 bool intel_port_is_tc(struct drm_i915_private *dev_priv, enum port port)
 {
 	if (INTEL_GEN(dev_priv) >= 11 && !IS_ELKHARTLAKE(dev_priv))
@@ -6693,9 +6707,25 @@ bool intel_port_is_tc(struct drm_i915_private *dev_priv, enum port port)
 	return false;
 }
 
+bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
+{
+	if (INTEL_GEN(dev_priv) >= 11 && !IS_ELKHARTLAKE(dev_priv))
+		return phy >= PHY_C && phy <= PHY_F;
+
+	return false;
+}
+
+enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port)
+{
+	if (IS_ELKHARTLAKE(i915) && port == PORT_D)
+		return PHY_A;
+
+	return (enum phy)port;
+}
+
 enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
 {
-	if (!intel_port_is_tc(dev_priv, port))
+	if (!intel_phy_is_tc(dev_priv, intel_port_to_phy(dev_priv, port)))
 		return PORT_TC_NONE;
 
 	return port - PORT_C;
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index d296556ed82e..d53285fb883f 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -228,6 +228,21 @@ struct intel_link_m_n {
 	u32 link_n;
 };
 
+enum phy {
+	PHY_NONE = -1,
+
+	PHY_A = 0,
+	PHY_B,
+	PHY_C,
+	PHY_D,
+	PHY_E,
+	PHY_F,
+
+	I915_MAX_PHYS
+};
+
+#define phy_name(a) ((a) + 'A')
+
 #define for_each_pipe(__dev_priv, __p) \
 	for ((__p) = 0; (__p) < INTEL_INFO(__dev_priv)->num_pipes; (__p)++)
 
@@ -356,5 +371,6 @@ void lpt_disable_clkout_dp(struct drm_i915_private *dev_priv);
 u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
 			      u32 pixel_format, u64 modifier);
 bool intel_plane_can_remap(const struct intel_plane_state *plane_state);
+enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port);
 
 #endif
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 24c63ed45c6f..815c26c0b98c 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1493,7 +1493,9 @@ void intel_encoder_destroy(struct drm_encoder *encoder);
 struct drm_display_mode *
 intel_encoder_current_mode(struct intel_encoder *encoder);
 bool intel_port_is_combophy(struct drm_i915_private *dev_priv, enum port port);
+bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy);
 bool intel_port_is_tc(struct drm_i915_private *dev_priv, enum port port);
+bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy);
 enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv,
 			      enum port port);
 int intel_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data,