From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 28 Mar 2016 14:21:20 +0000 (-0400)
Subject: drm/radeon: add a dpm quirk for all R7 370 parts
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0e5585dc870af947fab2af96a88c2d8b4270247c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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
---

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index a280a3201832..af4df81c4e0c 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;