DMAC_CFG
val = axi_dma_ioread32(chip, DMAC_CFG);
axi_dma_iowrite32(chip, DMAC_CFG, val);
val = axi_dma_ioread32(chip, DMAC_CFG);
axi_dma_iowrite32(chip, DMAC_CFG, val);
val = axi_dma_ioread32(chip, DMAC_CFG);
axi_dma_iowrite32(chip, DMAC_CFG, val);
val = axi_dma_ioread32(chip, DMAC_CFG);
axi_dma_iowrite32(chip, DMAC_CFG, val);
lan743x_csr_write(adapter, DMAC_CFG, data);