[3.16.y-ckt stable] Patch "drm/radeon: adjust default bapm settings for KV" has been added to staging queue
Luis Henriques
luis.henriques at canonical.com
Mon Jan 19 13:35:52 UTC 2015
This is a note to let you know that I have just added a patch titled
drm/radeon: adjust default bapm settings for KV
to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue
This patch is scheduled to be released in version 3.16.7-ckt5.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From 63c7e37cb86e2085b3bd1cf14bf0c7fb4960cf31 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher at amd.com>
Date: Mon, 15 Dec 2014 17:24:19 -0500
Subject: drm/radeon: adjust default bapm settings for KV
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 at amd.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
drivers/gpu/drm/radeon/kv_dpm.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c
index e79b7ebf5894..d873f86a3045 100644
--- 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 *rdev)
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 {
--
2.1.4
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