drm/radeon/dpm: disable ulv support on SI

commit 6fa455935ab956248b165f150ec6ae9106210077 upstream.

Causes problems on some boards.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=82889

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

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 0a2f5b4..879e628 100644 (file)
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -6200,7 +6200,7 @@ static void si_parse_pplib_clock_info(struct radeon_device *rdev,
        if ((rps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV) &&
            index == 0) {
                /* XXX disable for A0 tahiti */
-               si_pi->ulv.supported = true;
+               si_pi->ulv.supported = false;
                si_pi->ulv.pl = *pl;
                si_pi->ulv.one_pcie_lane_in_ulv = false;
                si_pi->ulv.volt_change_delay = SISLANDS_ULVVOLTAGECHANGEDELAY_DFLT;