VACTIVE
FIELD_PREP(VBLANK, vblank) | FIELD_PREP(VACTIVE, vactive));
VACTIVE(vactive - 1) | VTOTAL(vtotal - 1));
VACTIVE(crtc_vdisplay - 1) |
VACTIVE(crtc_vdisplay - 1) |
VACTIVE(crtc_vdisplay - 1) |
VACTIVE(480 - 1) | VTOTAL(525 - 1));