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-rw-r--r--include/drm/drm_dp_helper.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index faea76b..19ac599 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -446,6 +446,7 @@
#define DP_SINK_OUI 0x400
#define DP_BRANCH_OUI 0x500
#define DP_BRANCH_ID 0x503
+#define DP_BRANCH_HW_REV 0x509
#define DP_SET_POWER 0x600
# define DP_SET_POWER_D0 0x1
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