CHIPC_CHIPCTRL
cctrl = bhnd_bus_read_4(sc->core, CHIPC_CHIPCTRL);
bhnd_bus_write_4(sc->core, CHIPC_CHIPCTRL, cctrl);
cctrl = bhnd_bus_read_4(sc->core, CHIPC_CHIPCTRL);
bhnd_bus_write_4(sc->core, CHIPC_CHIPCTRL, cctrl);
cctrl = bhnd_bus_read_4(sc->core, CHIPC_CHIPCTRL);
bhnd_bus_write_4(sc->core, CHIPC_CHIPCTRL, cctrl);