diff --git a/drivers/gpu/drm/i915/display/intel_cmtg.c b/drivers/gpu/drm/i915/display/intel_cmtg.c
index e1fdc6fe9762..a279f3dcd1ec 100644
--- a/drivers/gpu/drm/i915/display/intel_cmtg.c
+++ b/drivers/gpu/drm/i915/display/intel_cmtg.c
@@ -4,7 +4,6 @@
  */
 
 #include <linux/string_choices.h>
-#include <linux/types.h>
 
 #include <drm/drm_device.h>
 #include <drm/drm_print.h>
@@ -16,6 +15,7 @@
 #include "intel_display_device.h"
 #include "intel_display_power.h"
 #include "intel_display_regs.h"
+#include "intel_display_types.h"
 
 /**
  * DOC: Common Primary Timing Generator (CMTG)
@@ -185,3 +185,15 @@ void intel_cmtg_sanitize(struct intel_display *display)
 
 	intel_cmtg_disable(display, &cmtg_config);
 }
+
+bool intel_cmtg_is_allowed(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	if ((cpu_transcoder == TRANSCODER_A || cpu_transcoder == TRANSCODER_B) &&
+	    DISPLAY_VER(display) == 35 && intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return true;
+
+	return false;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_cmtg.h b/drivers/gpu/drm/i915/display/intel_cmtg.h
index ba62199adaa2..ed540581738f 100644
--- a/drivers/gpu/drm/i915/display/intel_cmtg.h
+++ b/drivers/gpu/drm/i915/display/intel_cmtg.h
@@ -6,8 +6,12 @@
 #ifndef __INTEL_CMTG_H__
 #define __INTEL_CMTG_H__
 
+#include <linux/types.h>
+
 struct intel_display;
+struct intel_crtc_state;
 
 void intel_cmtg_sanitize(struct intel_display *display);
+bool intel_cmtg_is_allowed(const struct intel_crtc_state *crtc_state);
 
 #endif /* __INTEL_CMTG_H__ */