linux-kernel - Re: [PATCH 0/2] OF phandle nexus support + GPIO nexus

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Date:   Thu, 24 Nov 2016 16:27:05 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Stephen Boyd <stephen.boyd@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 0/2] OF phandle nexus support + GPIO nexus

On Thu, Nov 24, 2016 at 11:25 AM, Stephen Boyd <stephen.boyd@...aro.org> wrote:

> This is one small chunk of work related to DT overlays for expansion
> boards. It would be good to have a way to expose #<list>-cells types of
> providers through a connector in a standard way. So we introduce a way
> to make "nexus" nodes for these types of properties to remap the consumer
> number space to the other side of the connector's number space. It's
> basically a copy of the interrupt nexus implementation, but without
> the address space matching design and interrupt-parent walking.
>
> The first patch implements a generic method to do this, and the second patch
> adds a unit test for it. The third patch is more of an example than anything
> else. It shows how we would modify frameworks to use the new API.
>
> Stephen Boyd (3):
>   of: Support parsing phandle argument lists through a nexus node
>   of: unittest: Add phandle remapping test
>   gpio: Support gpio nexus dt bindings

Looks perfectly reasonable to me. But it's mainly for the DT people to review
I guess.

I have no idea about the eventual merge path though, I guess it needs to
go through the OF tree with my ACK.

Yours,
Linus Walleij