lkml.org 
[lkml]   [2019]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v4 03/10] of/irq: document properties for wakeup interrupt parent
On Wed, Mar 13, 2019 at 10:19 PM Lina Iyer <ilina@codeaurora.org> wrote:

> +Mapping the interrupt specifiers in the device tree can be done using the
> +"irqdomain-map" property. The property contains interrupt specifier at the
> +current interrupt controller followed by the interrupt specifier at the mapped
> +interrupt controller.
> +
> + irqdomain-map = <incoming-interrupt-specifier mapped-interrupt-specifier>
> +
> +The optional properties "irqdomain-map-mask" and "irqdomain-map-pass-thru" may
> +be provided to help interpret the valid bits of the incoming and mapped
> +interrupt specifiers respectively.
> +
> + Example:
> + irqdomain-map = <22 0 &intc 36 0>, <24 0 &intc 37 0>;
> + irqdomain-map-mask = <0xff 0>;
> + irqdomain-map-pass-thru = <0 0xff>;

This is looking a bit familiar to the existing interrupt-map that is
used for PCI interrupts and Swizzling back to a set of PCI
host interrupts.

I tried to document interrupt-map here:
https://elinux.org/Device_Tree_Usage#Advanced_Interrupt_Mapping

interrupt-map is a bit convoluted, so I don't know if it would be subject
to reuse for this. I suspect that interrupt-map, despite the name,
is for PCI only.

Yours,
Linus Walleij

\
 
 \ /
  Last update: 2019-04-17 16:37    [W:0.134 / U:2.328 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site