RTSX_HCBCTLR
sc->sc_regs4[1] = READ4(sc, RTSX_HCBCTLR);
WRITE4(sc, RTSX_HCBCTLR, sc->sc_regs4[1]);
WRITE4(sc, RTSX_HCBCTLR,
WRITE4(sc, RTSX_HCBCTLR, RTSX_STOP_CMD);