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?
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