DMA_CH_CR
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_CR, SPH, 1);
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_CR, SPH, 0);
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_CR, PBLX8,
regval = readl(XLGMAC_DMA_REG(channel, DMA_CH_CR));
writel(regval, XLGMAC_DMA_REG(channel, DMA_CH_CR));
regval = readl(XLGMAC_DMA_REG(channel, DMA_CH_CR));
writel(regval, XLGMAC_DMA_REG(channel, DMA_CH_CR));