[PATCH v2 0/3] soc: ti: Add TDA54 SCM configuration syscon support

[Moteen Shah <m-shah@ti.com>]

This series adds support for the TDA54 SCM configuration region in the MCU
domain. The region is shared by several peripherals, so it is exposed as a
syscon regmap for other drivers to look up by phandle.

Patch 1 adds the device tree binding for ti,tda54-mcu-scm-conf.

Patch 2 splits the SoC decode and registration logic out of
k3_chipinfo_probe() into k3_socinfo_register() and exports it. The helper
lets other drivers register SoC information after reading the JTAG ID through
their own access path, and uses devm cleanup for registered SoC devices and
their attributes.

Patch 3 adds the TDA54 SCM configuration driver. It provides proxy-aware
register access with SCM unlock and claim handling, publishes the regmap
through syscon, and registers TDA54 SoC information through the helper from
patch 2. The option defaults to m on ARCH_K3.

Changelog:
Link to V1: https://lore.kernel.org/all/20261019080736.944127-1-m-shah@ti.com/

Changes in v2:
- No changes to the device tree binding patch.
- Use devm-managed allocation for the SoC attributes and revision string in
  k3-socinfo, and simplify the cleanup of the registered SoC device.
- Enable fast_io for the TDA54 SCM configuration regmap.

Moteen Shah (3):
  dt-bindings: soc: ti: Document the ti,tda54-mcu-scm-conf binding
  soc: ti: k3-socinfo: Export SoC registration helper
  soc: ti: Add TDA54 SCM configuration syscon support

 .../soc/ti/ti,tda54-mcu-scm-conf.yaml         |  78 +++++++
 drivers/soc/ti/Kconfig                        |  16 ++
 drivers/soc/ti/Makefile                       |   1 +
 drivers/soc/ti/k3-socinfo.c                   | 121 ++++++----
 drivers/soc/ti/tda54-mcu-sysconf.c            | 217 ++++++++++++++++++
 include/linux/soc/ti/k3-socinfo.h             |  11 +
 6 files changed, 402 insertions(+), 42 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/soc/ti/ti,tda54-mcu-scm-conf.yaml
 create mode 100644 drivers/soc/ti/tda54-mcu-sysconf.c
 create mode 100644 include/linux/soc/ti/k3-socinfo.h

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2.34.1