SWCRR_SWEN
enabled = in_be32(&ddata->base->swcrr) & SWCRR_SWEN;
tmp &= ~(SWCRR_SWTC | SWCRR_SWF | SWCRR_SWEN | SWCRR_SWRI | SWCRR_SWPR);
tmp |= SWCRR_SWEN | SWCRR_SWPR | (ddata->swtc << 16);
if (!(tmp & SWCRR_SWEN))