HIDMA_MAX_BUS_WR_REQ_BIT_POS
val &= ~(HIDMA_MAX_BUS_REQ_LEN_MASK << HIDMA_MAX_BUS_WR_REQ_BIT_POS);
val |= mgmtdev->max_write_request << HIDMA_MAX_BUS_WR_REQ_BIT_POS;