drm/radeon/dpm: disable cac setup on SI
Disable cac setup on SI for now since it causes
strange performance level restrictions on certain
cards. I suspect there may be issues with some of
the 64 bit fixed point double emulation that is used
to set up those parameters. I need to double check
the math before this can be re-enabled.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 994f9e5..e8ee685 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -1929,6 +1929,7 @@
si_pi->cac_override = cac_override_pitcairn;
si_pi->powertune_data = &powertune_data_pitcairn;
si_pi->dte_data = dte_data_pitcairn;
+ break;
}
} else if (rdev->family == CHIP_VERDE) {
si_pi->lcac_config = lcac_cape_verde;
@@ -2041,7 +2042,8 @@
ni_pi->enable_sq_ramping = false;
si_pi->enable_dte = false;
- if (si_pi->powertune_data->enable_powertune_by_default) {
+ /* XXX: fix me */
+ if (0/*si_pi->powertune_data->enable_powertune_by_default*/) {
ni_pi->enable_power_containment= true;
ni_pi->enable_cac = true;
if (si_pi->dte_data.enable_dte_by_default) {