6 Mar
2021
6 Mar
'21
9:36 p.m.
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