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Message-Id: <1402429600-20477-35-git-send-email-kamal@canonical.com> Date: Tue, 10 Jun 2014 12:44:34 -0700 From: Kamal Mostafa <kamal@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Alex Deucher <alexander.deucher@....com>, Kamal Mostafa <kamal@...onical.com> Subject: [PATCH 3.13 034/160] drm/radeon: disable mclk dpm on R7 260X 3.13.11.3 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher <alexdeucher@...il.com> commit 57700ad1f2f21d5d7ab7ee0e58d11b5954852434 upstream. 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@....com> Signed-off-by: Kamal Mostafa <kamal@...onical.com> --- drivers/gpu/drm/radeon/ci_dpm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c index 1ed4799..d4ca530 100644 --- a/drivers/gpu/drm/radeon/ci_dpm.c +++ b/drivers/gpu/drm/radeon/ci_dpm.c @@ -5128,6 +5128,10 @@ 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; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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