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drm/radeon/dpm: disable cac setup on SI

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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>
This commit is contained in:
Alex Deucher 2013-07-28 18:26:38 -04:00
parent 3652f00591
commit d05f7e700a
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/radeon/si_dpm.c
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@ -1929,6 +1929,7 @@ static void si_initialize_powertune_defaults(struct radeon_device *rdev)
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 @@ static void si_initialize_powertune_defaults(struct radeon_device *rdev)
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) {