This is a note to let you know that I've just added the patch titled
drm/radeon/dpm/rs780: don't enable sclk scaling if not required
to the 3.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-dpm-rs780-don-t-enable-sclk-scaling-if-not-required.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e40210cca98068835acd5a4fe760bf96b3a1aa48 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Fri, 13 Sep 2013 10:55:10 -0400
Subject: drm/radeon/dpm/rs780: don't enable sclk scaling if not required
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit e40210cca98068835acd5a4fe760bf96b3a1aa48 upstream.
If the low and high sclks are the same, there is no need to
enable sclk scaling. This causes display stability issues on
certain boards.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=60857
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/rs780_dpm.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/radeon/rs780_dpm.c
+++ b/drivers/gpu/drm/radeon/rs780_dpm.c
@@ -486,6 +486,9 @@ static void rs780_activate_engine_clk_sc
(new_state->sclk_low == old_state->sclk_low))
return;
+ if (new_state->sclk_high == new_state->sclk_low)
+ return;
+
rs780_clk_scaling_enable(rdev, true);
}
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-3.11/radeon-kms-fix-uninitialised-hotplug-work-usage-in-r100_irq_process.patch
queue-3.11/drm-radeon-avoid-uvd-corruptions-on-agp-cards.patch
queue-3.11/drm-radeon-dpm-rs780-don-t-enable-sclk-scaling-if-not-required.patch
queue-3.11/drm-radeon-fix-init-ordering-for-r600.patch
queue-3.11/drm-radeon-add-berlin-pci-ids.patch
queue-3.11/drm-radeon-enable-uvd-interrupts-on-cik.patch
queue-3.11/drm-radeon-fix-lcd-record-parsing.patch
queue-3.11/drm-radeon-fix-panel-scaling-with-edp-and-lvds-bridges.patch
queue-3.11/drm-radeon-fix-resume-on-some-rs4xx-boards-v2.patch
queue-3.11/drm-radeon-cik-update-gpu_init-for-an-additional-berlin-gpu.patch
queue-3.11/drm-radeon-update-line-buffer-allocation-for-dce8.patch
queue-3.11/drm-radeon-r6xx-add-a-stubbed-out-set_uvd_clocks-callback.patch
queue-3.11/drm-radeon-si-add-support-for-cp-dma-to-cs-checker-for-compute-v2.patch
queue-3.11/drm-radeon-atom-workaround-vbios-bug-in-transmitter-table-on-rs880-v2.patch
queue-3.11/drm-radeon-fix-endian-bugs-in-hw-i2c-atom-routines.patch
queue-3.11/drm-radeon-dpm-add-reclocking-quirk-for-asus-k70af.patch
queue-3.11/drm-radeon-update-line-buffer-allocation-for-dce6.patch
queue-3.11/drm-radeon-update-line-buffer-allocation-for-dce4.1-5.patch
queue-3.11/drm-radeon-add-some-additional-berlin-pci-ids.patch
queue-3.11/drm-radeon-dpm-handle-bapm-on-trinity.patch
queue-3.11/drm-radeon-dpm-fix-fallback-for-empty-uvd-clocks.patch
queue-3.11/drm-radeon-dpm-make-sure-dc-performance-level-limits-are-valid-btc-si-v2.patch
queue-3.11/drm-radeon-fix-handling-of-variable-sized-arrays-for-router-objects.patch
queue-3.11/drm-radeon-fill-in-gpu_init-for-berlin-gpu-cores.patch
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