On Thu, Feb 25, 2021 at 10:52:43AM +0800, Shengjiu Wang wrote: > Imx-rpmsg is a new added machine driver for supporting audio on Cortex-M > core. The Cortex-M core will control the audio interface, DMA and audio > codec, setup the pipeline, the audio driver on Cortex-A core side is just > to communitcate with M core, it is a virtual sound card and don't touch > the hardware. This sounds like 1 h/w block (the interface to the cortex-M), your DT should be 1 node. If you need 2 drivers to satisfy the needs of the OS, then instantiate one device from the other device's driver. Rob
