Hi
On Fri, Mar 5, 2021 at 4:05 AM Rob Herring robh@kernel.org wrote:
On Thu, Feb 18, 2021 at 1:23 AM Shengjiu Wang shengjiu.wang@gmail.com wrote:
On Thu, Feb 11, 2021 at 6:18 AM Rob Herring robh@kernel.org wrote:
On Sun, Feb 07, 2021 at 06:23:55PM +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.
I don't understand why there are 2 nodes for this other than you happen to want to split this into 2 Linux drivers. It's 1 h/w thing.
This one is for the sound card machine driver. Another one is for the sound card cpu dai driver. so there are 2 nodes.
You are explaining this to me in terms of drivers. Explain it in terms of h/w blocks.
Yes, there is only 1 h/w block, which is (MU) message unit
As the sound card needs a cpu dai node and sound card node, so from the driver's perspective, I use two nodes.
Seems It is hard to only use one node for my case. or do you have any suggestions?
Best regards Wang shengjiu