From 74b4b9a2b34d3f34b509427e16c4ede8ea5f22e2 Mon Sep 17 00:00:00 2001 From: Roman Li Date: Tue, 20 Nov 2018 16:50:29 -0500 Subject: [PATCH 5604/5725] drm/amd/display: Raise dispclk value for Polaris [Why] The visual corruption due to low display clock value. Observed on RHEL7.6/Polaris at 2K@120Hz. [How] There was earlier patch for dspclk: 'drm/amd/display: Raise dispclk value for dce_update_clocks' Adding +15% workaround also to to dce112_update_clocks Signed-off-by: Roman Li Reviewed-by: Nicholas Kazlauskas --- drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c index 02ddc94..f1e71a8 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c @@ -668,6 +668,10 @@ static void dce112_update_clocks(struct clk_mgr *clk_mgr, { struct dce_clk_mgr *clk_mgr_dce = TO_DCE_CLK_MGR(clk_mgr); struct dm_pp_power_level_change_request level_change_req; + int unpatched_disp_clk = context->bw.dce.dispclk_khz; + + if (!clk_mgr_dce->dfs_bypass_active) + context->bw.dce.dispclk_khz = context->bw.dce.dispclk_khz * 115 / 100; level_change_req.power_level = dce_get_required_clocks_state(clk_mgr, context); /* get max clock state from PPLIB */ @@ -682,6 +686,8 @@ static void dce112_update_clocks(struct clk_mgr *clk_mgr, clk_mgr->clks.dispclk_khz = context->bw.dce.dispclk_khz; } dce11_pplib_apply_display_requirements(clk_mgr->ctx->dc, context); + + context->bw.dce.dispclk_khz = unpatched_disp_clk; } static void dce12_update_clocks(struct clk_mgr *clk_mgr, -- 2.7.4