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drm/radeon: reinstate oland workaround for sclk

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[ 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@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Deucher 2017-03-15 21:11:46 -04:00 committed by Greg Kroah-Hartman
parent 6a51e93b2f
commit fec8348008
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/radeon/si_dpm.c
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@ -3030,9 +3030,13 @@ 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;
}
}