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[AMD Official Use Only - Internal Distribution Only]
Hi Bindu,
The value is recommended by the hardware team. Since a non-recommended value was being used, that itself is the root cause. I will add this to commit message.
--
Thanks & Regards,
Aurabindo Pillai
From: R, Bindu <Bindu.R@xxxxxxx>
Sent: Thursday, April 8, 2021 11:55 AM To: Pillai, Aurabindo <Aurabindo.Pillai@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx> Cc: Aberback, Joshua <Joshua.Aberback@xxxxxxx> Subject: Re: [PATCH] drm/amd/display: Update DCN302 SR Exit Latency
[AMD Official Use Only - Internal Distribution Only] Hi Jay,
Could you please add few details on the root cause, in the [Why/How] section?
Thanks,
Bindu
From: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Sent: Thursday, April 8, 2021 11:48 AM To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx> Cc: Pillai, Aurabindo <Aurabindo.Pillai@xxxxxxx>; R, Bindu <Bindu.R@xxxxxxx>; Aberback, Joshua <Joshua.Aberback@xxxxxxx> Subject: [PATCH] drm/amd/display: Update DCN302 SR Exit Latency From: Joshua Aberback <joshua.aberback@xxxxxxx>
[Why] Update SR Exit Latency to fix screen flickering caused due to OTG underflow Signed-off-by: Joshua Aberback <joshua.aberback@xxxxxxx> Acked-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c index a928c1d9a557..fc2dea243d1b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c @@ -164,7 +164,7 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_02_soc = { .min_dcfclk = 500.0, /* TODO: set this to actual min DCFCLK */ .num_states = 1, - .sr_exit_time_us = 12, + .sr_exit_time_us = 15.5, .sr_enter_plus_exit_time_us = 20, .urgent_latency_us = 4.0, .urgent_latency_pixel_data_only_us = 4.0, -- 2.31.1 |
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