linux-kernel - [PATCH AUTOSEL for 3.18 14/59] drm/radeon: reinstate oland workaround for sclk

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Message-ID: <20171207155116.6013-14-alexander.levin@verizon.com>
Date:   Thu, 7 Dec 2017 15:51:25 +0000
From:   alexander.levin@...izon.com
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Alex Deucher <alexander.deucher@....com>,
        alexander.levin@...izon.com
Subject: [PATCH AUTOSEL for 3.18 14/59] drm/radeon: reinstate oland workaround
 for sclk

From: Alex Deucher <alexander.deucher@....com>

[ Upstream commit 66822d815ae61ecb2d9dba9031517e8a8476969d ]

Higher sclks seem to be unstable on some boards.

bug: https://bugs.freedesktop.org/show_bug.cgi?id=100222

Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/gpu/drm/radeon/si_dpm.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index e54d26e54c37..2113869e8678 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -2989,9 +2989,13 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
 			max_mclk = 80000;
 		}
 	} else if (rdev->family == CHIP_OLAND) {
-		if ((rdev->pdev->device == 0x6604) &&
-		    (rdev->pdev->subsystem_vendor == 0x1028) &&
-		    (rdev->pdev->subsystem_device == 0x066F)) {
+		if ((rdev->pdev->revision == 0xC7) ||
+		    (rdev->pdev->revision == 0x80) ||
+		    (rdev->pdev->revision == 0x81) ||
+		    (rdev->pdev->revision == 0x83) ||
+		    (rdev->pdev->revision == 0x87) ||
+		    (rdev->pdev->device == 0x6604) ||
+		    (rdev->pdev->device == 0x6605)) {
 			max_sclk = 75000;
 		}
 	}
-- 
2.11.0