From: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>
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@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>
---
.../gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c
index f4381725b210..36b0cd47c1c7 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c
@@ -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;
}
--
2.25.1
