From: Sasha Levin <sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Sasha Levin <sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
Ahzo <Ahzo-q7wo9g+UVklWk0Htik3J/w@public.gmane.org>,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
Alex Deucher <alexander.deucher-5C7GfCeVMHo@public.gmane.org>,
Evan Quan <evan.quan-5C7GfCeVMHo@public.gmane.org>
Subject: [PATCH AUTOSEL 4.14 11/28] drm/amd/powerplay/smu7: enforce minimal VBITimeout (v2)
Date: Tue, 24 Sep 2019 12:50:14 -0400 [thread overview]
Message-ID: <20190924165031.28292-11-sashal@kernel.org> (raw)
In-Reply-To: <20190924165031.28292-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
From: Ahzo <Ahzo@tutanota.com>
[ Upstream commit f659bb6dae58c113805f92822e4c16ddd3156b79 ]
This fixes screen corruption/flickering on 75 Hz displays.
v2: make print statement debug only (Alex)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102646
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Ahzo <Ahzo@tutanota.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
index 336fdd8c7db08..61141bc3edfe9 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -3972,6 +3972,11 @@ static int smu7_program_display_gap(struct pp_hwmgr *hwmgr)
data->frame_time_x2 = frame_time_in_us * 2 / 100;
+ if (data->frame_time_x2 < 280) {
+ pr_debug("%s: enforce minimal VBITimeout: %d -> 280\n", __func__, data->frame_time_x2);
+ data->frame_time_x2 = 280;
+ }
+
display_gap2 = pre_vbi_time_in_us * (ref_clock / 100);
cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL2, display_gap2);
--
2.20.1
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next prev parent reply other threads:[~2019-09-24 16:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-24 16:50 [PATCH AUTOSEL 4.14 01/28] drm/bridge: tc358767: Increase AUX transfer length limit Sasha Levin
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 02/28] drm/kms: Catch mode_object lifetime errors Sasha Levin
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 03/28] drm/panel: simple: fix AUO g185han01 horizontal blanking Sasha Levin
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 04/28] video: ssd1307fb: Start page range at page_offset Sasha Levin
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 05/28] drm/stm: attach gem fence to atomic state Sasha Levin
[not found] ` <20190924165031.28292-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 06/28] drm/radeon: Fix EEH during kexec Sasha Levin
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 07/28] gpu: drm: radeon: Fix a possible null-pointer dereference in radeon_connector_set_property() Sasha Levin
2019-09-24 16:50 ` Sasha Levin [this message]
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 21/28] drm/nouveau/volt: Fix for some cards having 0 maximum voltage Sasha Levin
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 22/28] drm/amdgpu/si: fix ASIC tests Sasha Levin
2019-09-24 16:50 ` [PATCH AUTOSEL 4.14 28/28] dma-buf/sw_sync: Synchronize signal vs syncpt free Sasha Levin
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