[PATCH v3 0/2] remoteproc: add AMD BRAM-based remote processor driver

[Ben Levinsky <ben.levinsky@amd.com>]

Add a BRAM-based remoteproc driver and corresponding binding
for AMD soft processors located in programmable logic.

v3:
  This version updates the binding to use SoC-specific compatibles with
  the fallback form discussed on the thread.

  Patch 1, dt-bindings: remoteproc: document AMD BRAM-based rproc

  - Reworked the compatible schema to use SoC-specific compatibles.
  - Added amd,versal2-bram-rproc to the supported compatible list.
  - Used xlnx,zynqmp-bram-rproc as the fallback compatible.
  - Updated the example to match the new compatible scheme.

  Patch 2, remoteproc: add AMD BRAM-based remote processor driver

  - Updated the driver OF match table to bind via the
    xlnx,zynqmp-bram-rproc fallback compatible.

v2:
  This version pivots the series away from a MicroBlaze-specific
  binding and driver shape and instead models a BRAM-based soft-core
  processor subsystem more generally.

  This follows the upstream feedback that amd,microblaze was too tied
  to the processor architecture while also being too generic as a DT
  compatible for the hardware interface being described.

  Patch 1, dt-bindings: remoteproc: document AMD BRAM-based rproc

  - Renamed the binding away from amd,microblaze and reframed it
    around a BRAM-based soft-core processor subsystem.
  - Dropped the redundant trailing "binding" wording from the patch
    subject.
  - Rewrote the binding text to describe the hardware rather than the
    Linux remoteproc framework.
  - Reworked the example to address the original dt_binding_check
    complaints about the root node and simple-pm-bus example shape.
  - Added a clocks property for the soft-core subsystem.

  Patch 2, remoteproc: add AMD BRAM-based remote processor driver

  - Renamed the driver away from the MicroBlaze-specific name to match
    the BRAM-based binding.
  - Added clock handling for the soft-core subsystem and the matching
    COMMON_CLK dependency in Kconfig.
  - Cleaned up the reset comments and removed the success dev_dbg()
    message called out in review.

Ben Levinsky (2):
  dt-bindings: remoteproc: document AMD BRAM-based rproc
  remoteproc: add AMD BRAM-based remote processor driver

 .../bindings/remoteproc/amd,bram-rproc.yaml   | 105 ++++++++
 MAINTAINERS                                   |   7 +
 drivers/remoteproc/Kconfig                    |  14 +
 drivers/remoteproc/Makefile                   |   1 +
 drivers/remoteproc/amd_bram_rproc.c           | 243 ++++++++++++++++++
 5 files changed, 370 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/amd,bram-rproc.yaml
 create mode 100644 drivers/remoteproc/amd_bram_rproc.c

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2.34.1