drm/amd/display: Increase stutter watermark for dcn303
authorBing Guo <bing.guo@amd.com>
Tue, 20 Jul 2021 19:13:38 +0000 (15:13 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Fri, 6 Aug 2021 01:02:29 +0000 (21:02 -0400)
[Why&How]
Hardware team suggested to use SRExitTime= 35.5us as w/a to prevent
underflow in certain modes.

Reviewed-by: Martin Leung <martin.leung@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Bing Guo <bing.guo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c

index 833ab13fa83401e9fc5933cdcc775185a2e166ba..dc7823d23ba89b4634974642845bd5939428c0c4 100644 (file)
@@ -146,8 +146,8 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_03_soc = {
 
                .min_dcfclk = 500.0, /* TODO: set this to actual min DCFCLK */
                .num_states = 1,
-               .sr_exit_time_us = 26.5,
-               .sr_enter_plus_exit_time_us = 31,
+               .sr_exit_time_us = 35.5,
+               .sr_enter_plus_exit_time_us = 40,
                .urgent_latency_us = 4.0,
                .urgent_latency_pixel_data_only_us = 4.0,
                .urgent_latency_pixel_mixed_with_vm_data_us = 4.0,