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drm/radeon/dpm: let atom control display phy powergating 

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Alex Deucher 2012-11-27 12:10:35 -05:00
parent d70229f704
commit 65676d06f5
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/radeon/sumo_dpm.c
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@ -813,6 +813,12 @@ static void sumo_program_bootup_state(struct radeon_device *rdev)
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 @@ void sumo_take_smu_control(struct radeon_device *rdev, bool enable)
v &= 0xFFFFFFFB;
WREG32(DOUT_SCRATCH3, v);
#endif
}
static void sumo_enable_sclk_ds(struct radeon_device *rdev, bool enable)