PWRCSR0
rt2x00mmio_register_write(rt2x00dev, PWRCSR0, 0);
rt2x00mmio_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);
rt2x00mmio_register_write(rt2x00dev, PWRCSR0, 0);
rt2x00mmio_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);