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Groups > linux.kernel > #1380922

[PATCH 3.14 07/37] drm/radeon: add a dpm quirk for all R7 370 parts

From Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups linux.kernel
Subject [PATCH 3.14 07/37] drm/radeon: add a dpm quirk for all R7 370 parts
Date 2016-04-18 04:30 +0200
Message-ID <rp76P-6cG-35@gated-at.bofh.it> (permalink)
References <rp76N-6cG-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

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 */
 

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[PATCH 3.14 07/37] drm/radeon: add a dpm quirk for all R7 370 parts Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-04-18 04:30 +0200

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