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drm/amd/display: disable otg toggle w/a on boot 

This w/a has a bad interaction with seamless boot toggling an
active stream. Most panels recover, however some fail leading
to display corruption.

Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dmytro Laktyushkin 2022-06-10 17:44:41 -04:00 committed by Alex Deucher
parent 22676bc500
commit 8a077d9caa
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c
View File

@ -173,11 +173,14 @@ static void dcn315_update_clocks(struct clk_mgr *clk_mgr_base,
}
if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) {
dcn315_disable_otg_wa(clk_mgr_base, true);
/* No need to apply the w/a if we haven't taken over from bios yet */
if (clk_mgr_base->clks.dispclk_khz)
dcn315_disable_otg_wa(clk_mgr_base, true);
clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
dcn315_smu_set_dispclk(clk_mgr, clk_mgr_base->clks.dispclk_khz);
dcn315_disable_otg_wa(clk_mgr_base, false);
if (clk_mgr_base->clks.dispclk_khz)
dcn315_disable_otg_wa(clk_mgr_base, false);
update_dispclk = true;
}