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SubjectRe: [PATCH 2/3] dt-bindings: mailbox: Add Apple mailbox bindings
> +      - description:
> + M3 mailboxes are an older variant with a slightly different MMIO
> + interface still found on the M1.
> + items:
> + - const: apple,t8103-m3-mailbox

Would be nice to document an example of where an M3 mailbox is found.

> + interrupts:
> + minItems: 4
> + items:
> + - description: send fifo is empty interrupt
> + - description: send fifo is not empty interrupt
> + - description: receive fifo is empty interrupt
> + - description: receive fifo is not empty interrupt
> +
> + interrupt-names:
> + minItems: 4
> + items:
> + - const: send-empty
> + - const: send-not-empty
> + - const: recv-empty
> + - const: recv-not-empty

If the names became not-constant the asprintf thing goes away, not sure
that's better or worse.

> + clocks:
> + description:
> + Reference to the clock gate phandle(s) if required for this mailbox.
> + Optional since not all mailboxes are attached to a clock gate.

Do we do anything with the clocks at this point?

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