This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM335X MMC3使用问题



hi :

    我们想使用MMC3接SDIO WIFI,但是初始化的时候提示DMA错误。rx分配失败,这个是怎么回事?我看am33xx.dtsi文件,发现mmc3是没有配置dma的,为什么驱动里还有这个错误提示?

[ 1.470336] omap_hsmmc 47810000.mmc: [huzz]drivers/mmc/host/omap_hsmmc.c:omap_hsmmc_dma_init
[ 1.479933] omap_hsmmc 47810000.mmc: RX DMA channel request failed