Commit 9e658631 authored Sep 01, 2024 by Nick Chan Committed by Thomas Gleixner Sep 04, 2024

dt-bindings: apple,aic: Document A7-A11 compatibles



Document and describe the compatibles for Apple A7-A11 SoCs.
There are three feature levels:

 - apple,aic: No fast IPI, for A7-A10
 - apple,t8015-aic: fast IPI, global only, for A11
 - apple,t8103-aic: fast IPI with local and global support, for M1

Each feature level is an extension of the previous, for example, M1 will
also work with the A7 feature level.

All of A7-M1 gets its own SoC-specific compatible, and the "apple,aic"
compatible as a fallback.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/all/20240901034143.12731-2-towinchenmi@gmail.com

parent 4609c6ea

Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml

+13 −1

Original line number	Diff line number	Diff line
		@@ -31,13 +31,25 @@ description: \|
		This device also represents the FIQ interrupt sources on platforms using AIC,
		which do not go through a discrete interrupt controller.

		IPIs may be performed via MMIO registers on all variants of AIC. Starting
		from A11, system registers may also be used for "fast" IPIs. Starting from
		M1, even faster IPIs within the same cluster may be achieved by writing to
		a "local" fast IPI register as opposed to using the "global" fast IPI
		register.

		allOf:
		- $ref: /schemas/interrupt-controller.yaml#

		properties:
		compatible:
		items:
		- const: apple,t8103-aic
		- enum:
		- apple,s5l8960x-aic
		- apple,t7000-aic
		- apple,s8000-aic
		- apple,t8010-aic
		- apple,t8015-aic
		- apple,t8103-aic
		- const: apple,aic

		interrupt-controller: true