Attachment 142662 Details for Bug 102646 – possible fix

[patch] possible fix

0001-drm-amdgpu-powerplay-fix-mclk-switch-limit-on-polari.patch (text/plain), 1.18 KB, created by Alex Deucher on 2018-11-30 01:25:40 UTC

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Creator: Alex Deucher

Created: 2018-11-30 01:25:40 UTC

Size: 1.18 KB

patch

obsolete

>From 659ba3cb19c80bcd0a15a653c128c2ea04877f45 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Thu, 29 Nov 2018 19:20:28 -0500
>Subject: [PATCH 1/4] drm/amdgpu/powerplay: fix mclk switch limit on polaris
>
>Update switch limit on newer polaris variants.  This may fix
>flickering with high refresh rates with mclk switching enabled.
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>---
> drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
>index 5dcd21d29dbf..1f12fc7ea7c9 100644
>--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
>+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
>@@ -2859,7 +2859,10 @@ static int smu7_vblank_too_short(struct pp_hwmgr *hwmgr,
> 	case CHIP_POLARIS10:
> 	case CHIP_POLARIS11:
> 	case CHIP_POLARIS12:
>-		switch_limit_us = data->is_memory_gddr5 ? 190 : 150;
>+		if (hwmgr->is_kicker)
>+			switch_limit_us = data->is_memory_gddr5 ? 450 : 150;
>+		else
>+			switch_limit_us = data->is_memory_gddr5 ? 190 : 150;
> 		break;
> 	case CHIP_VEGAM:
> 		switch_limit_us = 30;
>-- 
>2.13.6
>

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Attachments on bug 102646: 134180 | 134181 | 134182 | 134285 | 137789 | 142539 | 142662 | 142924 | 144237 | 144238 | 144253 | 144565 | 144950 | 144951

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