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SubjectRe: [PATCH v2 3/7] ASoC: dt-bindings: fsl_rpmsg: Add binding doc for rpmsg cpu dai driver
On Thu, Feb 18, 2021 at 4:21 AM Shengjiu Wang <> wrote:

> > rpmsg is a protocol. What's the h/w block?
> On Linux side this driver is a virtual driver, it is running
> on Arm Cortex-A core. The h/w block is controlled by
> another core (cortex-M core). so this driver actually
> doesn't touch any hardware, it just does configuration
> for rpmsg channel.
> fsl,version: There are maybe different image running on M core, this
> is the image version, different image has different function.

To answer Rob's question: the hardware block that handles these
messages is the Message Unit block.

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