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dt-bindings: mailbox: apple,mailbox: Add ASC mailboxes on Apple A11 and T2

Add bindings for ASC mailboxes as found on Apple A11 and T2 SoCs. These
mailboxes are used for coprocessors including Secure Enclave Processor
(SEP), the NVMe coprocessor and the system management controller.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Link: https://lore.kernel.org/r/20250821-t8015-nvme-v3-1-14a4178adf68@gmail.com
Signed-off-by: Sven Peter <sven@kernel.org>

authored by

Nick Chan and committed by
Sven Peter 32299eb0 ec437f9b

+7
+7
Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
··· 34 34 - const: apple,asc-mailbox-v4 35 35 36 36 - description: 37 + An older ASC mailbox interface found on T2 and A11 that is also 38 + used for the NVMe coprocessor and the system management 39 + controller. 40 + items: 41 + - const: apple,t8015-asc-mailbox 42 + 43 + - description: 37 44 M3 mailboxes are an older variant with a slightly different MMIO 38 45 interface still found on the M1. It is used for the Thunderbolt 39 46 co-processors.