This is a note to let you know that I've just added the patch titled
drm/radeon: add a dpm quirk for all R7 370 parts
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-add-a-dpm-quirk-for-all-r7-370-parts.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0e5585dc870af947fab2af96a88c2d8b4270247c Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Mon, 28 Mar 2016 10:21:20 -0400
Subject: drm/radeon: add a dpm quirk for all R7 370 parts
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 0e5585dc870af947fab2af96a88c2d8b4270247c upstream.
Higher mclk values are not stable due to a bug somewhere.
Limit them for now.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/si_dpm.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3007,6 +3007,10 @@ static void si_apply_state_adjust_rules(
ps->performance_levels[i].sclk = max_sclk;
}
}
+ /* limit mclk on all R7 370 parts for stability */
+ if (rdev->pdev->device == 0x6811 &&
+ rdev->pdev->revision == 0x81)
+ max_mclk = 120000;
/* XXX validate the min clocks required for display */
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-3.14/drm-radeon-add-a-dpm-quirk-for-all-r7-370-parts.patch
queue-3.14/drm-radeon-add-a-dpm-quirk-for-sapphire-dual-x-r7-370-2g-d5.patch
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