Commit a6cf39fb authored Feb 14, 2021 by Hector Martin

dt-bindings: timer: arm,arch_timer: Add interrupt-names support



Not all platforms provide the same set of timers/interrupts, and Linux
only needs one (plus kvm/guest ones); some platforms are working around
this by using dummy fake interrupts. Implementing interrupt-names allows
the devicetree to specify an arbitrary set of available interrupts, so
the timer code can pick the right one.

This also adds the hyp-virt timer/interrupt, which was previously not
expressed in the fixed 4-interrupt form.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

parent 11ecdad7

Documentation/devicetree/bindings/timer/arm,arch_timer.yaml

+19 −0

Original line number	Diff line number	Diff line
		@@ -34,11 +34,30 @@ properties:
		- arm,armv8-timer

		interrupts:
		minItems: 1
		maxItems: 5
		items:
		- description: secure timer irq
		- description: non-secure timer irq
		- description: virtual timer irq
		- description: hypervisor timer irq
		- description: hypervisor virtual timer irq

		interrupt-names:
		oneOf:
		- minItems: 2
		items:
		- const: phys
		- const: virt
		- const: hyp-phys
		- const: hyp-virt
		- minItems: 3
		items:
		- const: sec-phys
		- const: phys
		- const: virt
		- const: hyp-phys
		- const: hyp-virt

		clock-frequency:
		description: The frequency of the main counter, in Hz. Should be present