diff options
| author | Martin Tsai <martin.tsai@amd.com> | 2023-12-18 16:36:44 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-01-09 15:43:53 -0500 |
| commit | 17e74e11ac2b46e7514705ae7abfb93ac0e20bd6 (patch) | |
| tree | 6c81731cfea6c3a5c4706bdb5143c6dc79b9eed0 /drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c | |
| parent | drm/amdkfd: Fix lock dependency warning (diff) | |
| download | linux-17e74e11ac2b46e7514705ae7abfb93ac0e20bd6.tar.gz linux-17e74e11ac2b46e7514705ae7abfb93ac0e20bd6.zip | |
drm/amd/display: To adjust dprefclk by down spread percentage
[Why]
Panels show corruption with high refresh rate timings when ssc is
enabled.
[How]
Read down-spread percentage from lut to adjust dprefclk. Issues come
from S0i3 with this commit has been fixed by SMU.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Martin Tsai <martin.tsai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c index 5d3f6fa1011e..970644b695cd 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c @@ -975,6 +975,9 @@ static bool dcn31_program_pix_clk( look_up_in_video_optimized_rate_tlb(pix_clk_params->requested_pix_clk_100hz / 10); struct bp_pixel_clock_parameters bp_pc_params = {0}; enum transmitter_color_depth bp_pc_colour_depth = TRANSMITTER_COLOR_DEPTH_24; + + if (clock_source->ctx->dc->clk_mgr->dp_dto_source_clock_in_khz != 0) + dp_dto_ref_khz = clock_source->ctx->dc->clk_mgr->dp_dto_source_clock_in_khz; // For these signal types Driver to program DP_DTO without calling VBIOS Command table if (dc_is_dp_signal(pix_clk_params->signal_type) || dc_is_virtual_signal(pix_clk_params->signal_type)) { if (e) { @@ -1088,6 +1091,10 @@ static bool get_pixel_clk_frequency_100hz( struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source); unsigned int clock_hz = 0; unsigned int modulo_hz = 0; + unsigned int dp_dto_ref_khz = clock_source->ctx->dc->clk_mgr->dprefclk_khz; + + if (clock_source->ctx->dc->clk_mgr->dp_dto_source_clock_in_khz != 0) + dp_dto_ref_khz = clock_source->ctx->dc->clk_mgr->dp_dto_source_clock_in_khz; if (clock_source->id == CLOCK_SOURCE_ID_DP_DTO) { clock_hz = REG_READ(PHASE[inst]); @@ -1100,7 +1107,7 @@ static bool get_pixel_clk_frequency_100hz( modulo_hz = REG_READ(MODULO[inst]); if (modulo_hz) *pixel_clk_khz = div_u64((uint64_t)clock_hz* - clock_source->ctx->dc->clk_mgr->dprefclk_khz*10, + dp_dto_ref_khz*10, modulo_hz); else *pixel_clk_khz = 0; |