From 99326ee3624b90d176a8f7e2aa3d15dfaa59c8f1 Mon Sep 17 00:00:00 2001 From: Dmytro Laktyushkin Date: Thu, 26 Jul 2018 12:17:58 -0400 Subject: [PATCH] drm/amd/display: program display clock on cache match [Why] We seem to have an issue where high enough display clock will not get set properly during S3 resume if we only call vbios once [How] Expand condition of display clock programming to happen even when cached display clock matches requested display clock Signed-off-by: Dmytro Laktyushkin Reviewed-by: Tony Cheng Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c | 4 +++- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c index f17677971d0f..684da3db7568 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c @@ -625,7 +625,9 @@ static void dcn1_update_clocks(struct dccg *dccg, } /* dcn1 dppclk is tied to dispclk */ - if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, dccg->clks.dispclk_khz)) { + /* program dispclk on = as a w/a for sleep resume clock ramping issues */ + if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, dccg->clks.dispclk_khz) + || new_clocks->dispclk_khz == dccg->clks.dispclk_khz) { dcn1_ramp_up_dispclk_with_dpp(dccg, new_clocks); dccg->clks.dispclk_khz = new_clocks->dispclk_khz; diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index f5d8242eb047..cfcc54f2ce65 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1089,6 +1089,8 @@ static void dcn10_init_hw(struct dc *dc) } enable_power_gating_plane(dc->hwseq, true); + + memset(&dc->res_pool->dccg->clks, 0, sizeof(dc->res_pool->dccg->clks)); } static void reset_hw_ctx_wrap( -- 2.30.2