Commit ba9012fc authored by David Galiffi's avatar David Galiffi Committed by Alex Deucher
Browse files

drm/amd/display: Add debug support to override the Minimum DRAM Clock 



[Why]
Requested feature to assist with Thermal, Acoustic, Power, and
Performance tuning.

[How]
Add a debug field that will override calculated minimum DRAM clock,
if the debug value is larger than the calculate value.

Reviewed-by: default avatarAlvin Lee <Alvin.Lee2@amd.com>
Acked-by: default avatarAnson Jacob <Anson.Jacob@amd.com>
Signed-off-by: default avatarDavid Galiffi <David.Galiffi@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b629a824

drivers/gpu/drm/amd/display/dc/dc.h

+1 −0
Original line number Diff line number Diff line
@@ -565,6 +565,7 @@ struct dc_debug_options { 
	enum wm_report_mode pplib_wm_report_mode;

	unsigned int min_disp_clk_khz;

	unsigned int min_dpp_clk_khz;

	unsigned int min_dram_clk_khz;

	int sr_exit_time_dpm0_ns;

	int sr_enter_plus_exit_time_dpm0_ns;

	int sr_exit_time_ns;

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

+4 −0
Original line number Diff line number Diff line
@@ -3117,6 +3117,10 @@ void dcn20_calculate_dlg_params( 
	context->bw_ctx.bw.dcn.clk.dcfclk_khz = context->bw_ctx.dml.vba.DCFCLK * 1000;

	context->bw_ctx.bw.dcn.clk.socclk_khz = context->bw_ctx.dml.vba.SOCCLK * 1000;

	context->bw_ctx.bw.dcn.clk.dramclk_khz = context->bw_ctx.dml.vba.DRAMSpeed * 1000 / 16;



	if (dc->debug.min_dram_clk_khz > context->bw_ctx.bw.dcn.clk.dramclk_khz)

		context->bw_ctx.bw.dcn.clk.dramclk_khz = dc->debug.min_dram_clk_khz;



	context->bw_ctx.bw.dcn.clk.dcfclk_deep_sleep_khz = context->bw_ctx.dml.vba.DCFCLKDeepSleep * 1000;

	context->bw_ctx.bw.dcn.clk.fclk_khz = context->bw_ctx.dml.vba.FabricClock * 1000;

	context->bw_ctx.bw.dcn.clk.p_state_change_support =