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DM6467 two SPI USE problem

I want to use two spi on dm6467 board and I add code below, spi0 work OK.But Icann't Find Spi1 dev.

The kernerl print  "Unable to request DMA channel for MibSPI RX", I finded out that dm6467 have just 1 dma

for two SPI.How Can I fixed This problem.