From: Roman Li <[email protected]> [Why] The visual corruption due to low display clock value observed on some systems
[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 <[email protected]> Reviewed-by: Leo Li <[email protected]> --- drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c | 7 +++++++ 1 file changed, 7 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 6c09c3a..5c1a7c0 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 @@ -676,6 +676,11 @@ 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; + + /*TODO: W/A for dal3 linux, investigate why this works */ + 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 */ @@ -690,6 +695,8 @@ 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 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
