quicc_write4
quicc_write4(sc->sc_rres, QUICC_REG_SIMR_L, 0x00f00000);
quicc_write4(sc->sc_rres, QUICC_REG_SIPNR_H, ~0);
quicc_write4(sc->sc_rres, QUICC_REG_SIPNR_L, ~0);
quicc_write4(bas, QUICC_REG_BRG(bas->chan - 1),