TI_MISC_HOST_CTL
CSR_WRITE_4(sc, TI_MISC_HOST_CTL,
chip_rev = CSR_READ_4(sc, TI_MISC_HOST_CTL) & TI_MHC_CHIP_REV_MASK;
if (!(CSR_READ_4(sc, TI_MISC_HOST_CTL) & TI_MHC_INTSTATE))