imx6声卡接口能否不使用sdma

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imx6声卡接口能否不使用sdma

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建辉卢
Contributor II

请问,imx6dl的声卡接口,可以不使用sdma吗?是因为我们跑双系统,core1已经使用了sdma,core0 linux需要屏蔽sdma。

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weidong_sun
NXP TechSupport
NXP TechSupport

Hello Jianhui,

    Whether to use DMA is determined by fsl_ssi.c. you can read the code, and pay attention to ssi_private->use_dma.

    fsl_ssi.c is in linux_top/sound/soc/fsl/

Have a nice day!

BR,

weidong

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