Patch "drm/radeon: add a dpm quirk for all R7 370 parts" has been added to the 3.14-stable tree

Patch "drm/radeon: add a dpm quirk for all R7 370 parts" has been added to the 3.14-stable tree

[gregkh]

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@vger.kernel.org> know about it.


>From 0e5585dc870af947fab2af96a88c2d8b4270247c Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
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@amd.com>

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@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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@amd.com 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