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Message-Id: <1460494375-30070-12-git-send-email-kamal@canonical.com>
Date: Tue, 12 Apr 2016 13:51:56 -0700
From: Kamal Mostafa <kamal@...onical.com>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
kernel-team@...ts.ubuntu.com
Cc: Alex Deucher <alexander.deucher@....com>,
Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 4.2.y-ckt 11/70] drm/radeon: add a dpm quirk for all R7 370 parts
4.2.8-ckt8 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Alex Deucher <alexander.deucher@....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@....com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
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 444935d..7285adb 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;
--
2.7.4
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