MT_WMM_CWMAX
val = mt76_rr(dev, MT_WMM_CWMAX(queue));
mt76_wr(dev, MT_WMM_CWMAX(queue), val);
val = mt76_rr(dev, MT_WMM_CWMAX);
mt76_wr(dev, MT_WMM_CWMAX, val);
mt76_wr(dev, MT_WMM_CWMAX, 0x34aa);
val = mt76_rr(dev, MT_WMM_CWMAX);
mt76_wr(dev, MT_WMM_CWMAX, val);