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drm/amd/display: Only use ODM2:1 policy for high pixel rate displays

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We only gain a benefit of using the ODM2:1 dynamic policy if it allow us
to decrease DISPCLK to use the VMIN freq.  If the display config can
already achieve VMIN DISPCLK freq without ODM2:1, don't apply the
policy.

This patch was reverted but that causes some IGT regressions. To
unblock, the patch is being applied again until IGT failures are
fixed.

Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
This commit is contained in:
Aurabindo Pillai
2023-06-06 11:42:53 -04:00
committed by Alex Deucher
parent b758850715
commit 33e82119cf
2 changed files with 2 additions and 0 deletions
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1
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
View File

@ -1918,6 +1918,7 @@ int dcn32_populate_dml_pipes_from_context(
context->stream_status[0].plane_count == 1 &&
!dc_is_hdmi_signal(res_ctx->pipe_ctx[i].stream->signal) &&
is_h_timing_divisible_by_2(res_ctx->pipe_ctx[i].stream) &&
pipe->stream->timing.pix_clk_100hz * 100 > DCN3_2_VMIN_DISPCLK_HZ &&
dc->debug.enable_single_display_2to1_odm_policy &&
!vsr_odm_support) { //excluding 2to1 ODM combine on >= 5k vsr
pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_2to1;

1
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
View File

@ -40,6 +40,7 @@
#define DCN3_2_DCFCLK_DS_INIT_KHZ 10000 // Choose 10Mhz for init DCFCLK DS freq
#define SUBVP_HIGH_REFRESH_LIST_LEN 3
#define DCN3_2_MAX_SUBVP_PIXEL_RATE_MHZ 1800
#define DCN3_2_VMIN_DISPCLK_HZ 717000000
#define TO_DCN32_RES_POOL(pool)\
container_of(pool, struct dcn32_resource_pool, base)