diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index c1078e5f9ca2..108cb45750a7 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -1000,6 +1000,7 @@ struct dp_sdp_header {
 
 #define EDP_SDP_HEADER_REVISION_MASK		0x1F
 #define EDP_SDP_HEADER_VALID_PAYLOAD_BYTES	0x1F
+#define DP_SDP_PPS_HEADER_PAYLOAD_BYTES_MINUS_1 0x7F
 
 struct edp_vsc_psr {
 	struct dp_sdp_header sdp_header;