Hi, This is the fourth 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@xxxxxxxxxxxxx/ v2: https://lore.kernel.org/lkml/20210916154911.3168-1-sven@xxxxxxxxxxxxx/ v3: https://lore.kernel.org/lkml/20211017114054.67737-1-sven@xxxxxxxxxxxxx/ Changes from v3 to v4: - dropped minItems: 4 from the bindings - added back of_xlate since the mailbox core only supports #mbox-cells = <1> but this mailbox uses #mbox-cells = <0> - Split of the MAINTAINERS changes to a separate file since we have quite a few changes in flight and there will likely be conflicts once the pull requests from various subsystems are sent to Linus 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 (3): MAINTAINERS: Add Apple mailbox files dt-bindings: mailbox: Add Apple mailbox bindings mailbox: apple: Add driver for Apple mailboxes .../bindings/mailbox/apple,mailbox.yaml | 77 ++++ MAINTAINERS | 3 + drivers/mailbox/Kconfig | 12 + drivers/mailbox/Makefile | 2 + drivers/mailbox/apple-mailbox.c | 384 ++++++++++++++++++ include/linux/apple-mailbox.h | 19 + 6 files changed, 497 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 -- 2.25.1
