[PATCH 3.18 038/183] drm/radeon: adjust default bapm settings for KV

Greg Kroah-Hartman
2015-01-25T18:59:11Z

From: Alex Deucher <alexander.deucher@amd.com>

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@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
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 {