PV_V_CONTROL
CRTC_WRITE(PV_V_CONTROL,
CRTC_WRITE(PV_V_CONTROL,
CRTC_WRITE(PV_V_CONTROL,
CRTC_READ(PV_V_CONTROL) & ~PV_VCONTROL_VIDEN);
ret = wait_for(!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN), 1);
if (!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN))
VC4_REG32(PV_V_CONTROL),
CRTC_WRITE(PV_V_CONTROL,
CRTC_READ(PV_V_CONTROL) | PV_VCONTROL_VIDEN);