Re: [PATCH 2/2] ASoC: cs35l56: Read firmware uuid from a device property instead of _SUB

[Richard Fitzgerald]

On 16/8/23 18:03, Mark Brown wrote:
> On Wed, Aug 16, 2023 at 05:49:06PM +0100, Richard Fitzgerald wrote:
> > From: Maciej Strozek <mstrozek@xxxxxxxxxxxxxxxxxxxxx>
> >
> > Use a device property "cirrus,firmware-uid" to get the unique firmware
> > identifier instead of using ACPI _SUB.
> >
> > There will not usually be a _SUB in Soundwire nodes. The ACPI can use a
> > _DSD section for custom properties.
> >
> > There is also a need to support instantiating this driver using software
> > nodes. This is for systems where the CS35L56 is a back-end device and the
> > ACPI refers only to the front-end audio device - there will not be any ACPI
> > references to CS35L56.
>
> Are there any existing systems (or might there be given that the driver
> is in released kernels already) which rely on _SUB?

No. Nothing has been released with CS35L56.