From: Tom St Denis <tom.stdenis@amd.com>
Date: Thu, 13 Oct 2016 16:38:07 +0000 (-0400)
Subject: drm/radeon/si_dpm: Limit clocks on HD86xx part
X-Git-Tag: submit/tizen/20161219.112149~6^2~165
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=231be2b99e4aaddd25c2b247f65d3c7c043c2738;p=sdk%2Femulator%2Femulator-kernel.git

drm/radeon/si_dpm: Limit clocks on HD86xx part

commit fb9a5b0c1c9893db2e0d18544fd49e19d784a87d upstream.

Limit clocks on a specific HD86xx part to avoid
crashes (while awaiting an appropriate PP fix).

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 472e0771832e..a6e20c37093d 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3021,6 +3021,12 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
 		max_sclk = 75000;
 		max_mclk = 80000;
 	}
+	/* limit clocks on HD8600 series */
+	if (rdev->pdev->device == 0x6660 &&
+	    rdev->pdev->revision == 0x83) {
+		max_sclk = 75000;
+		max_mclk = 80000;
+	}
 
 	if (rps->vce_active) {
 		rps->evclk = rdev->pm.dpm.vce_states[rdev->pm.dpm.vce_level].evclk;