From 6512387a54357c5d3fbea8995d8879ea817a5ec6 Mon Sep 17 00:00:00 2001 From: Tony Cheng Date: Wed, 27 Sep 2017 09:20:51 -0400 Subject: [PATCH] drm/amd/display: align DCLK to voltage level in past program SMU will use all voltage headroom. RV does not if DAL need higher voltage for DCFCLK or DISPCLK, also increase FCLK to improve stutter as voltage is already Signed-off-by: Tony Cheng Reviewed-by: Charlene Liu Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c | 4 ++++ drivers/gpu/drm/amd/display/dc/dc.h | 1 + drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c | 1 + 3 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c index cf474eb1cde8..9337ccadc321 100644 --- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c +++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c @@ -1049,6 +1049,10 @@ bool dcn_validate_bandwidth( else bw_consumed = v->fabric_and_dram_bandwidth_vmax0p9; + if (bw_consumed < v->fabric_and_dram_bandwidth) + if (dc->debug.voltage_align_fclk) + bw_consumed = v->fabric_and_dram_bandwidth; + display_pipe_configuration(v); calc_wm_sets_and_perf_params(context, v); context->bw.dcn.calc_clk.fclk_khz = (int)(bw_consumed * 1000000 / diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index cf9cd108539f..dbbe1d621bee 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -188,6 +188,7 @@ struct dc_debug { enum dcc_option disable_dcc; enum pipe_split_policy pipe_split_policy; bool force_single_disp_pipe_split; + bool voltage_align_fclk; bool disable_dfs_bypass; bool disable_dpp_power_gate; diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c index 30c275e05796..4018e831eb4b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c @@ -428,6 +428,7 @@ static const struct dc_debug debug_defaults_drv = { .pipe_split_policy = MPC_SPLIT_AVOID_MULT_DISP, .disable_dcc = DCC_ENABLE, + .voltage_align_fclk = true, }; static const struct dc_debug debug_defaults_diags = { -- 2.30.2