Add defines for dpcd register 2009 (synchronization latency
in sink).

Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
CC: Puthikorn Voravootivat <put...@chromium.org>
Reviewed-by: Rodrigo Vivi <rodrigo.v...@intel.com>
Signed-off-by: Vathsala Nagaraju <vathsala.nagar...@intel.com>
---
 include/drm/drm_dp_helper.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 11c39f1..846004e6 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -735,6 +735,9 @@
 # define DP_PSR_SINK_INTERNAL_ERROR         7
 # define DP_PSR_SINK_STATE_MASK             0x07
 
+#define DP_SINK_SYNCHRONIZATION_LATENCY            0x2009
+# define DP_MAX_RESYNC_FRAME_CNT_MASK      0xf
+
 #define DP_RECEIVER_ALPM_STATUS                    0x200b  /* eDP 1.4 */
 # define DP_ALPM_LOCK_TIMEOUT_ERROR        (1 << 0)
 
-- 
1.9.1

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