HICR_CHGM
BA0WRITE4(sc, CS4280_HICR, HICR_IEV|HICR_CHGM);
BA0WRITE4(sc, CS4280_HICR, HICR_CHGM | HICR_IEV);
BA0WRITE4(sc, CS4281_HICR, HICR_IEV | HICR_CHGM);
BA0WRITE4(sc, CS4281_HICR, HICR_IEV | HICR_CHGM);
BA0WRITE4(sc, CS4281_HICR, HICR_IEV | HICR_CHGM);
BA0WRITE4(sc, CS4281_HICR, HICR_IEV | HICR_CHGM);