CIO2_REG_CDMAC0
writel(0, base + CIO2_REG_CDMAC0(i));
CIO2_CDMAC0_DMA_HALTED, base + CIO2_REG_CDMAC0(CIO2_DMA_CHAN));
writel(0, base + CIO2_REG_CDMAC0(CIO2_DMA_CHAN));
ret = readl_poll_timeout(base + CIO2_REG_CDMAC0(CIO2_DMA_CHAN),