imx6q how to set serial DMA for dts tree

[joqin]

hello everyone,

use kernel 3.14.52,how to set serial 2 dma configure for dts tree.

thanks

[igorpadykov]

Hi liang

as described in Table 4-1. SDMA Channel Usage attached Linux Manual

in nxp linux bsps by default sdma is enabled for uart.

Below nxp linux repository

https://source.codeaurora.org/external/imx/linux-imx/tree/?h=imx_4.9.88_2.0.0_galinux-imx - i.MX Linux kernel 

dts example with uart2

imx6q-arm2.dts\dts\boot\arm\arch - linux-imx - i.MX Linux kernel 

Best regards
igor
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[joqin]

thanks for your reply.