drm/amd/display: HDMI has no sound after Panel power off/on

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index 444558c..162f6a6 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -735,6 +735,8 @@ static void dce110_stream_encoder_update_hdmi_info_packets(
                if (info_frame->avi.valid) {
                        const uint32_t *content =
                                (const uint32_t *) &info_frame->avi.sb[0];
+                       /*we need turn on clock before programming AFMT block*/
+                       REG_UPDATE(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, 1);
 
                        REG_WRITE(AFMT_AVI_INFO0, content[0]);