drm/radeon: adjust default bapm settings for KV

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>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c
index 9b42001..e3e9c10 100644 (file)
--- 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 {