[PATCH v3 0/2] Support reading Subsystem ID from Device Tree

[Stefan Binding]

In PC systems using ACPI, the driver is able to read back an SSID from
the _SUB property. This SSID uniquely identifies the system, which
enables the driver to read the correct firmware and tuning for that
system from linux-firmware. Currently there is no way of reading this
property from device tree. Add an equivalent property in device tree
to perform the same role.

Changes since v2:
- Fixed use of PTR_ERR, using PTR_ERR_OR_ZERO instead
- Update commit message of patch 1 to explain why we need SSID property

Changes since v1:
- Fixed device tree property type

Stefan Binding (2):
  ASoC: dt-bindings: cirrus,cs35l41: Document the cirrus,subsystem-id
    property
  ASoC: cs35l41: Fallback to reading Subsystem ID property if not ACPI

 .../bindings/sound/cirrus,cs35l41.yaml        |  6 ++
 sound/soc/codecs/cs35l41.c                    | 77 +++++++++++--------
 2 files changed, 50 insertions(+), 33 deletions(-)

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2.43.0