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drm/amd/display: update dio for two pixel per container case

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[why]
Processing rate of the DP encoder, must be programmed to be the same as
DIG_FIFO_OUTPUT_ PROCESSING_MODE in DP mode
0: 1 pixel per cycle
1: 2 pixel per cycle

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Charlene Liu 2023-03-09 17:05:47 -05:00 committed by Alex Deucher
parent ac84304d68
commit e89d890c1b
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.c
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@ -286,6 +286,7 @@ static void enc32_stream_encoder_dp_unblank(
uint32_t n_vid = 0x8000;
uint32_t m_vid;
uint32_t n_multiply = 0;
uint32_t pix_per_cycle = 0;
uint64_t m_vid_l = n_vid;
/* YCbCr 4:2:0 : Computed VID_M will be 2X the input rate */
@ -320,6 +321,10 @@ static void enc32_stream_encoder_dp_unblank(
REG_UPDATE_2(DP_VID_TIMING,
DP_VID_M_N_GEN_EN, 1,
DP_VID_N_MUL, n_multiply);
REG_UPDATE(DP_PIXEL_FORMAT,
DP_PIXEL_PER_CYCLE_PROCESSING_MODE,
pix_per_cycle);
}
/* make sure stream is disabled before resetting steer fifo */