Re: [PATCH v2 14/25] dt-bindings: interrupt-controller: Add DT bindings for apple-aic
From: Arnd Bergmann <arnd@kernel.org>
Date: 2021-02-16 09:42:15
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linux-arm-kernel, lkml
On Mon, Feb 15, 2021 at 1:17 PM Hector Martin [off-list ref] wrote:
+ + The 2nd cell contains the interrupt number. + - HW IRQs: interrupt number + - FIQs: + - 0: physical HV timer + - 1: virtual HV timer + - 2: physical guest timer + - 3: virtual guest timer
I wonder if you could just model the FIQ as a single shared level interrupt
(which is essentially what it is), and have every driver that uses it do a
request_irq() on the same IRQ number.
This would avoid having to come up with a fake binding for it, and simplify
the implementation that then no longer has to peek into each interrupt
source.
Arnd