[Why]
On 4K SKU, in DC mode, there is a visible slowness
observed on system compared to AC mode.
[How]
Tuning min fclk up by 2% resolved this issue.
Signed-off-by: Pratik Vishwakarma <Pratik.Vishwakarma@xxxxxxx>
---
.../gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c
index 832a43053420..ead009628c48 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/rv1_clk_mgr.c
@@ -210,6 +210,7 @@ static void rv1_update_clocks(struct clk_mgr *clk_mgr_base,
bool send_request_to_increase = false;
bool send_request_to_lower = false;
int display_count;
+ int i, clock_factor = 0;
bool enter_display_off = false;
@@ -217,6 +218,12 @@ static void rv1_update_clocks(struct clk_mgr *clk_mgr_base,
pp_smu = &clk_mgr->pp_smu->rv_funcs;
+ for (i = 0; i < context->stream_count; i++) {
+ if (context->streams[i]->timing.h_total > 3840
+ || context->streams[i]->timing.v_total > 2160)
+ clock_factor = 2;
+ }
+
display_count = clk_mgr_helper_get_active_display_cnt(dc, context);
if (display_count == 0)
@@ -302,7 +309,7 @@ static void rv1_update_clocks(struct clk_mgr *clk_mgr_base,
(new_clocks->dcfclk_deep_sleep_khz + 999) / 1000);
} else {
pp_smu->set_hard_min_fclk_by_freq(&pp_smu->pp_smu,
- new_clocks->fclk_khz / 1000);
+ ((new_clocks->fclk_khz / 1000) * (100 + clock_factor)) / 100);
pp_smu->set_hard_min_dcfclk_by_freq(&pp_smu->pp_smu,
new_clocks->dcfclk_khz / 1000);
pp_smu->set_min_deep_sleep_dcfclk(&pp_smu->pp_smu,
--
2.25.1
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