drm/radeon/dpm: let atom control display phy powergating
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c
index 7ab6006..69792e4 100644
--- a/drivers/gpu/drm/radeon/sumo_dpm.c
+++ b/drivers/gpu/drm/radeon/sumo_dpm.c
@@ -813,6 +813,12 @@
void sumo_take_smu_control(struct radeon_device *rdev, bool enable)
{
+/* This bit selects who handles display phy powergating.
+ * Clear the bit to let atom handle it.
+ * Set it to let the driver handle it.
+ * For now we just let atom handle it.
+ */
+#if 0
u32 v = RREG32(DOUT_SCRATCH3);
if (enable)
@@ -821,6 +827,7 @@
v &= 0xFFFFFFFB;
WREG32(DOUT_SCRATCH3, v);
+#endif
}
static void sumo_enable_sclk_ds(struct radeon_device *rdev, bool enable)
