linux-kernel - [PATCH AUTOSEL for 4.4 027/101] drm/radeon/si: add dpm quirk for Oland

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Message-ID: <20171207155005.5852-27-alexander.levin@verizon.com>
Date:   Thu, 7 Dec 2017 15:50:18 +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 4.4 027/101] drm/radeon/si: add dpm quirk for
 Oland

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

[ Upstream commit 0f424de1fd9bc4ab24bd1fe5430ab5618e803e31 ]

OLAND 0x1002:0x6604 0x1028:0x066F 0x00 seems to have problems
with higher sclks.

Acked-by: Christian König <christian.koenig@....com>
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 | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index b6f16804e73b..c42430bd3ac2 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3029,6 +3029,12 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
 			max_sclk = 75000;
 			max_mclk = 80000;
 		}
+	} else if (rdev->family == CHIP_OLAND) {
+		if ((rdev->pdev->device == 0x6604) &&
+		    (rdev->pdev->subsystem_vendor == 0x1028) &&
+		    (rdev->pdev->subsystem_device == 0x066F)) {
+			max_sclk = 75000;
+		}
 	}
 	/* Apply dpm quirks */
 	while (p && p->chip_device != 0) {
-- 
2.11.0