r20
uint32 r20;
uint32 r20;
uint8_t r17, r18, r19, r20;
mtw_rf_write(sc, 0, 20, mt7601_rf_chan[i].r20);
frame->r20, frame->r21, frame->r22, frame->r23);
dprintf("r20-r23: 0x%08lx 0x%08lx 0x%08lx 0x%08lx\n", frame->r20, frame->r21, frame->r22, frame->r23);