From: Sung Lee <sung.lee@xxxxxxx>
[Why]
With certain fclock overclocks, state 1 may be chosen
as the closest clock level. This may result in this state
being empty if not populated beforehand, resulting in
black screens and screen corruption.
[How]
Copy over all soc states to clock_limits before bounding
box creation to avoid any cases with empty states.
Signed-off-by: Sung Lee <sung.lee@xxxxxxx>
Reviewed-by: Tony Cheng <Tony.Cheng@xxxxxxx>
Reviewed-by: Yongqiang Sun <yongqiang.sun@xxxxxxx>
Acked-by: Qingqing Zhuo <Qingqing.Zhuo@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
index d6d78438ea08..cc7ba2a052fe 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
@@ -1583,6 +1583,11 @@ static void update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param
dcn2_1_soc.num_chans = bw_params->num_channels;
ASSERT(clk_table->num_entries);
+ /* Copy dcn2_1_soc.clock_limits to clock_limits to avoid copying over null states later */
+ for (i = 0; i < dcn2_1_soc.num_states + 1; i++) {
+ clock_limits[i] = dcn2_1_soc.clock_limits[i];
+ }
+
for (i = 0; i < clk_table->num_entries; i++) {
/* loop backwards*/
for (closest_clk_lvl = 0, j = dcn2_1_soc.num_states - 1; j >= 0; j--) {
--
2.17.1
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