[PATCH] Revert "drm/amd/display: Only use ODM2:1 policy for high pixel rate displays"

[Aurabindo Pillai]

This reverts commit 047783cdd5f604d87398236beb4971abb4d43293 since it
causes higher power consumption for single display use case (4k60).

Also, this patch introduced a 35% performance drop in a Vulkan benchmark.

* The patch disabled the ODM-combination on most popular monitors, including 4K, 2K and FHD monitors at 60Hz.

* ODM-combination can halve the DPP clock to save power, that is the reason why we introduce ODM-combination, and the PM log shows single pipe consumes more power at 4K at 60Hz.

* ODM-combination has 2 de-tiled buffer involved, which provides longer self-sustained time, that benefit to the memory power optimization.

Signed-off-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c | 1 -
 drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h | 1 -
 2 files changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
index 2e6b39fe2613..8d68f02f5147 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
@@ -1918,7 +1918,6 @@ 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;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
index 58826e0aa76e..80bebdf43eca 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
@@ -37,7 +37,6 @@
 #define DCN3_2_MBLK_WIDTH 128
 #define DCN3_2_MBLK_HEIGHT_4BPE 128
 #define DCN3_2_MBLK_HEIGHT_8BPE 64
-#define DCN3_2_VMIN_DISPCLK_HZ 717000000
 #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
-- 
2.40.1