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| author | Charlene Liu <charlene.liu@amd.com> | 2017-11-15 18:27:31 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-12-14 10:51:23 -0500 |
| commit | c984d06b7bca3b0451faa5e0c323e4ff16b365b3 (patch) | |
| tree | f26c85fa65db8711b4935135f66a5d3e3ccc3b3e /drivers/gpu/drm/amd | |
| parent | 096480eac61ca8aa1834ba7ceda165d397e29ca0 (diff) | |
| download | lwn-c984d06b7bca3b0451faa5e0c323e4ff16b365b3.tar.gz lwn-c984d06b7bca3b0451faa5e0c323e4ff16b365b3.zip | |
drm/amd/display: fix seq issue: turn on clock before programming afmt.
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c | 4 |
1 files changed, 3 insertions, 1 deletions
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 83bae207371d..327a0a76266b 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c @@ -87,8 +87,10 @@ static void dce110_update_generic_info_packet( */ uint32_t max_retries = 50; + REG_GET(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, ®val); /*we need turn on clock before programming AFMT block*/ - REG_UPDATE(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, 1); + if (regval != 1) + REG_UPDATE(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, 1); if (REG(AFMT_VBI_PACKET_CONTROL1)) { if (packet_index >= 8) |