From: Alex Deucher <alexdeucher@gmail.com>
Date: Fri, 11 Apr 2014 02:29:03 +0000 (-0400)
Subject: drm/radeon: disable mclk dpm on R7 260X
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=57700ad1f2f21d5d7ab7ee0e58d11b5954852434;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

drm/radeon: disable mclk dpm on R7 260X

Setting higher mclks seems to cause stability issues
on some R7 260X boards.  Disable it for now for stability
until we find a proper fix.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=75992

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---

diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index cad89a977527..6d395ec25c13 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -5146,6 +5146,10 @@ int ci_dpm_init(struct radeon_device *rdev)
 	pi->mclk_dpm_key_disabled = 0;
 	pi->pcie_dpm_key_disabled = 0;
 
+	/* mclk dpm is unstable on some R7 260X cards */
+	if (rdev->pdev->device == 0x6658)
+		pi->mclk_dpm_key_disabled = 1;
+
 	pi->caps_sclk_ds = true;
 
 	pi->mclk_strobe_mode_threshold = 40000;