SDMA is enabled by default in i.MX8MP.
Kindly check the MACRO (CONFIG_IMX_SDMA) in “.config” file generated after the “make iw_rainbowg40m_defconfig” command in linux.
Also, there is “dma” property(dma-ranges) set for USB controller in dts file for i.MX8MP.
For further inquiries, please get in touch with mktg@iwave-global.com
Please find the detailed G40M product information in the below link,