The setting of vop registers need a reg_done writing to take effect.
In vop_enable the vop return to work by by restoring registers, but the
registers do not take effect immediately, it should a vop_cfg_done
after it. The same thing is needed by windows_disabled in
vop_crtc_disable.

Signed-off-by: Chris Zhong <redacted>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index efbc41a..a0bfcff 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c

@@ -464,6 +464,8 @@ static int vop_enable(struct drm_crtc *crtc)
 	}
 
 	memcpy(vop->regs, vop->regsbak, vop->len);
+	vop_cfg_done(vop);
+
 	/*
 	 * At here, vop clock & iommu is enable, R/W vop regs would be safe.
 	 */

@@ -513,6 +515,8 @@ static void vop_crtc_disable(struct drm_crtc *crtc)
 		spin_unlock(&vop->reg_lock);
 	}
 
+	vop_cfg_done(vop);
+
 	drm_crtc_vblank_off(crtc);
 
 	/*

-- 
1.9.1