RTSX_HCBCTLR
WRITE4(sc, RTSX_HCBCTLR, RTSX_STOP_CMD);
sc->regs4[1] = READ4(sc, RTSX_HCBCTLR);
WRITE4(sc, RTSX_HCBCTLR, sc->regs4[1]);
WRITE4(sc, RTSX_HCBCTLR,