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drm/amd/display: Override min required DCFCLK in dml1_validate

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[WHY]:
Increasing min DCFCLK addresses underflow issues that occur when phantom
pipe is turned on for some Sub-Viewport configs

[HOW]:
dcn32_override_min_req_dcfclk is added to override DCFCLK value in
dml1_validate when subviewport is being used.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Sohaib Nadeem <sohaib.nadeem@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sohaib Nadeem
2024-02-14 13:51:16 -05:00
committed by Alex Deucher
parent 9b3fec307f
commit 26fbcb3da7
3 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
View File

@@ -782,3 +782,9 @@ void dcn32_update_dml_pipes_odm_policy_based_on_context(struct dc *dc, struct dc
pipe_cnt++;
}
}
void dcn32_override_min_req_dcfclk(struct dc *dc, struct dc_state *context)
{
if (dcn32_subvp_in_use(dc, context) && context->bw_ctx.bw.dcn.clk.dcfclk_khz <= MIN_SUBVP_DCFCLK_KHZ)
context->bw_ctx.bw.dcn.clk.dcfclk_khz = MIN_SUBVP_DCFCLK_KHZ;
}

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

@@ -1771,6 +1771,7 @@ static bool dml1_validate(struct dc *dc, struct dc_state *context, bool fast_val
dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
dcn32_override_min_req_memclk(dc, context);
dcn32_override_min_req_dcfclk(dc, context);
BW_VAL_TRACE_END_WATERMARKS();

3
drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.h
View File

@@ -42,6 +42,7 @@
#define SUBVP_ACTIVE_MARGIN_LIST_LEN 2
#define DCN3_2_MAX_SUBVP_PIXEL_RATE_MHZ 1800
#define DCN3_2_VMIN_DISPCLK_HZ 717000000
#define MIN_SUBVP_DCFCLK_KHZ 400000
#define TO_DCN32_RES_POOL(pool)\
container_of(pool, struct dcn32_resource_pool, base)
@@ -181,6 +182,8 @@ bool dcn32_subvp_vblank_admissable(struct dc *dc, struct dc_state *context, int
void dcn32_update_dml_pipes_odm_policy_based_on_context(struct dc *dc, struct dc_state *context, display_e2e_pipe_params_st *pipes);
void dcn32_override_min_req_dcfclk(struct dc *dc, struct dc_state *context);
/* definitions for run time init of reg offsets */
/* CLK SRC */