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: [PATCH] drm/radeon: add a dpm quirk for all R7 370 parts
Higher mclk values are not stable due to a bug somewhere.
Limit them for now.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
drivers/gpu/drm/radeon/si_dpm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index a280a32018327..af4df81c4e0c7 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3010,6 +3010,10 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
}
++p;
}
+ /* limit mclk on all R7 370 parts for stability */
+ if (rdev->pdev->device == 0x6811 &&
+ rdev->pdev->revision == 0x81)
+ max_mclk = 120000;
if (rps->vce_active) {
rps->evclk = rdev->pm.dpm.vce_states[rdev->pm.dpm.vce_level].evclk;