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Message-Id: <a668a8394cc07e3e65f07a2039d38663cee83d1e.1461323133.git.jslaby@suse.cz> Date: Fri, 22 Apr 2016 13:05:28 +0200 From: Jiri Slaby <jslaby@...e.cz> To: stable@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Alex Deucher <alexander.deucher@....com>, Jiri Slaby <jslaby@...e.cz> Subject: [PATCH 3.12 45/78] drm/radeon: add a dpm quirk for all R7 370 parts From: Alex Deucher <alexander.deucher@....com> 3.12-stable review patch. If anyone has any objections, please let me know. =============== 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: Jiri Slaby <jslaby@...e.cz> --- 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 34527c050062..393217886d98 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -3008,6 +3008,10 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev, 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 */ -- 2.8.1
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