Attachment 144978 Details for Bug 110865 – possible fix

[patch] possible fix

0001-drm-amdgpu-powerplay-smu7-enable-mclk-switching-if-m.patch (text/plain), 1.48 KB, created by Alex Deucher on 2019-08-08 05:49:59 UTC

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Creator: Alex Deucher

Created: 2019-08-08 05:49:59 UTC

Size: 1.48 KB

patch

obsolete

>From 53436e69654eed1b6cd14b27761ef312bc674c53 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Thu, 8 Aug 2019 00:47:49 -0500
>Subject: [PATCH 1/2] drm/amdgpu/powerplay/smu7: enable mclk switching if
> monitors are synced
>
>If DC has synced the displays, we can enable mclk switching to
>save power.
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>---
> drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
>diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
>index 487aeee1cf8a..b107a78da714 100644
>--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
>+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
>@@ -2956,9 +2956,10 @@ static int smu7_apply_state_adjust_rules(struct pp_hwmgr *hwmgr,
> 	if (hwmgr->display_config->num_display == 0)
> 		disable_mclk_switching = false;
> 	else
>-		disable_mclk_switching = ((1 < hwmgr->display_config->num_display) ||
>-					  disable_mclk_switching_for_frame_lock ||
>-					  smu7_vblank_too_short(hwmgr, hwmgr->display_config->min_vblank_time));
>+		disable_mclk_switching = ((1 < hwmgr->display_config->num_display) &&
>+					  !hwmgr->display_config->multi_monitor_in_sync) ||
>+			disable_mclk_switching_for_frame_lock ||
>+			smu7_vblank_too_short(hwmgr, hwmgr->display_config->min_vblank_time);
> 
> 	sclk = smu7_ps->performance_levels[0].engine_clock;
> 	mclk = smu7_ps->performance_levels[0].memory_clock;
>-- 
>2.20.1
>

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Attachments on bug 110865: 144485 | 144978 | 144983 | 145136 | 145157 | 145180

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