drm/radeon: Use correct value for unknown audio/video latency

Valid values are 1 to 251 for 0 to 500 ms latency, 0 for unknown
and 255 for audio/video unsupported by sink, according to HDMI 1.3 spec.
Also matches Radeon HDA verb 0xf7b documentation.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/dce6_afmt.c b/drivers/gpu/drm/radeon/dce6_afmt.c
index 0a65dc7e93e7..af936cc09b61 100644
--- a/drivers/gpu/drm/radeon/dce6_afmt.c
+++ b/drivers/gpu/drm/radeon/dce6_afmt.c
@@ -136,13 +136,13 @@ void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
                         tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
                                 AUDIO_LIPSYNC(connector->audio_latency[1]);
                 else
-                        tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
+                        tmp = VIDEO_LIPSYNC(0) | AUDIO_LIPSYNC(0);
         } else {
                 if (connector->latency_present[0])
                         tmp = VIDEO_LIPSYNC(connector->video_latency[0]) |
                                 AUDIO_LIPSYNC(connector->audio_latency[0]);
                 else
-                        tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
+                        tmp = VIDEO_LIPSYNC(0) | AUDIO_LIPSYNC(0);
         }
         WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC, tmp);
 }