[PATCH v3 0/2] Apple Mailbox Controller support

[Sven Peter <sven@svenpeter.dev>]

Hi,

This is the second version of my series which adds support for the mailbox
controllers found on the Apple M1.

v1: https://lore.kernel.org/lkml/20210907145501.69161-1-sven@svenpeter.dev/
v2: https://lore.kernel.org/lkml/20210916154911.3168-1-sven@svenpeter.dev/

Thanks again to Jassi and Mark for the review. I've addressed your comments with the
following changes from v2 to v3:

 - removed dma barriers since the mbox client will take care of these
 - moved the of_device_id table and related code to the bottom of the file
 - removed of_xlate
 - dropped clock handling from the code and the binding since we now understand
   that these are actually power domains

Changes from v1 to v2:
 - switched to txdone_irq instead of introducing a new mode
 - switched to a threaded interrupt handler for receiving messages
 - added co-processor examples to the device tree binding
 - reformatted the register defines and clarified multiple comments

Best,

Sven

Sven Peter (2):
  dt-bindings: mailbox: Add Apple mailbox bindings
  mailbox: apple: Add driver for Apple mailboxes

 .../bindings/mailbox/apple,mailbox.yaml       |  79 ++++
 MAINTAINERS                                   |   3 +
 drivers/mailbox/Kconfig                       |  12 +
 drivers/mailbox/Makefile                      |   2 +
 drivers/mailbox/apple-mailbox.c               | 374 ++++++++++++++++++
 include/linux/apple-mailbox.h                 |  18 +
 6 files changed, 488 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
 create mode 100644 drivers/mailbox/apple-mailbox.c
 create mode 100644 include/linux/apple-mailbox.h

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2.25.1