drm/radeon/kms: disable PPLL0 on DCE6.1 when not in use

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 92263af38f56..a5c4e3fa6bb2 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1646,6 +1646,8 @@ static void atombios_crtc_commit(struct drm_crtc *crtc)
 static void atombios_crtc_disable(struct drm_crtc *crtc)
 {
         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+        struct drm_device *dev = crtc->dev;
+        struct radeon_device *rdev = dev->dev_private;
         struct radeon_atom_ss ss;
 
         atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
@@ -1657,6 +1659,12 @@ static void atombios_crtc_disable(struct drm_crtc *crtc)
                 atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
                                           0, 0, ATOM_DISABLE, 0, 0, 0, 0, 0, false, &ss);
                 break;
+        case ATOM_PPLL0:
+                /* disable the ppll */
+                if (ASIC_IS_DCE61(rdev))
+                        atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
+                                                  0, 0, ATOM_DISABLE, 0, 0, 0, 0, 0, false, &ss);
+                break;
         default:
                 break;
         }