From 3557db425dd9e6d806617326bf71d1c8da2a707f Mon Sep 17 00:00:00 2001 From: Max Tseng Date: Fri, 22 Sep 2023 16:50:53 +0800 Subject: [PATCH] drm/amd/display: Modify Vmin default value Fine tune the Vmin clock value Reviewed-by: Robin Chen Acked-by: Tom Chung Signed-off-by: Max Tseng Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn35/dcn35_resource.c | 8 +++++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c index d8fa229d78ce0..64a2692fd4f6d 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c @@ -1914,7 +1914,7 @@ static bool dcn314_resource_construct( dc->caps.color.mpc.ogam_rom_caps.hlg = 0; dc->caps.color.mpc.ocsc = 1; - dc->caps.max_disp_clock_khz_at_vmin = 694000; + dc->caps.max_disp_clock_khz_at_vmin = 650000; /* Use pipe context based otg sync logic */ dc->config.use_pipe_ctx_sync_logic = true; diff --git a/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_resource.c b/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_resource.c index 828846538a929..f1d776f395436 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn35/dcn35_resource.c @@ -1830,7 +1830,13 @@ static bool dcn35_resource_construct( dc->caps.color.mpc.ogam_rom_caps.hlg = 0; dc->caps.color.mpc.ocsc = 1; - dc->caps.max_disp_clock_khz_at_vmin = 669154; + /* max_disp_clock_khz_at_vmin is slightly lower than the STA value in order + * to provide some margin. + * It's expected for furture ASIC to have equal or higher value, in order to + * have determinstic power improvement from generate to genration. + * (i.e., we should not expect new ASIC generation with lower vmin rate) + */ + dc->caps.max_disp_clock_khz_at_vmin = 650000; /* Use pipe context based otg sync logic */ dc->config.use_pipe_ctx_sync_logic = true; -- 2.30.2