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imx6 enet

Question asked by dong fangxiu on Apr 20, 2016
Latest reply on Apr 20, 2016 by dong fangxiu

According to i.MX 6 SD Applications Processor reference  manual,

Legacy buffer descriptors are used only in single-ring mode,

that is, when DMAnCFG[DMA_CLASS_EN] are zero.

but I cannot find this register, so when descriptors reach the last one, they cannot warp back, errors happen.