This is a note to let you know that I've just added the patch titled
drm/radeon: adjust default bapm settings for KV
to the 3.18-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-adjust-default-bapm-settings-for-kv.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 02ae7af53a451a1b0a51022c4693f5b339133e79 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Mon, 15 Dec 2014 17:24:19 -0500
Subject: drm/radeon: adjust default bapm settings for KV
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 02ae7af53a451a1b0a51022c4693f5b339133e79 upstream.
Enabling bapm seems to cause clocking problems on some
KV configurations. Disable it by default for now.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/kv_dpm.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/radeon/kv_dpm.c
+++ b/drivers/gpu/drm/radeon/kv_dpm.c
@@ -2745,13 +2745,11 @@ int kv_dpm_init(struct radeon_device *rd
pi->enable_auto_thermal_throttling = true;
pi->disable_nb_ps3_in_battery = false;
if (radeon_bapm == -1) {
- /* There are stability issues reported on with
- * bapm enabled on an asrock system.
- */
- if (rdev->pdev->subsystem_vendor == 0x1849)
- pi->bapm_enable = false;
- else
+ /* only enable bapm on KB, ML by default */
+ if (rdev->family == CHIP_KABINI || rdev->family == CHIP_MULLINS)
pi->bapm_enable = true;
+ else
+ pi->bapm_enable = false;
} else if (radeon_bapm == 0) {
pi->bapm_enable = false;
} else {
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-3.18/drm-radeon-fix-typo-in-ci-dpm-disable.patch
queue-3.18/drm-radeon-check-the-right-ring-in-radeon_evict_flags.patch
queue-3.18/drm-dp-retry-aux-transactions-32-times-v1.1.patch
queue-3.18/drm-radeon-kv-has-three-pplls-v2.patch
queue-3.18/drm-radeon-adjust-default-bapm-settings-for-kv.patch
queue-3.18/drm-radeon-properly-filter-dp1.2-4k-modes-on-non-dp1.2-hw.patch
queue-3.18/drm-radeon-fix-sad_count-check-for-dce3.patch
queue-3.18/drm-radeon-work-around-a-hw-bug-in-mgcg-on-cik.patch
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