linux-kernel - Re: [PATCH v2 01/15] dt-bindings: gpio: convert bindings for NXP PCA953x family to dtschema

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Message-ID: <CAJKOXPdQJz7aLu4sjds46SiZwxvB-VMBR=stjpUme+8iEo+d-w@mail.gmail.com>
Date:   Thu, 10 Sep 2020 20:53:52 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Nishanth Menon <nm@...com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Russell King <linux@...linux.org.uk>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Tero Kristo <t-kristo@...com>,
        Michal Simek <michal.simek@...inx.com>,
        Guenter Roeck <linux@...ck-us.net>, devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-mediatek@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH v2 01/15] dt-bindings: gpio: convert bindings for NXP
 PCA953x family to dtschema

On Thu, 10 Sep 2020 at 20:28, Nishanth Menon <nm@...com> wrote:
>
> On 19:57-20200910, Krzysztof Kozlowski wrote:
> [...]
> > +  wakeup-source:
> > +    $ref: /schemas/types.yaml#/definitions/flag
> > +
> > +patternProperties:
> > +  "^(hog-[0-9]+|.+-hog(-[0-9]+)?)$":
>
> I wonder if "hog" is too generic and might clash with "something-hog" in
> the future?

This pattern is already used in
Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml. It will
match only children and so far it did not find any other nodes in ARM
and ARM64 dts. I don't expect clashes. Also the question is then - if
one adds a child of GPIO expander named "foobar-hog" and it is not a
GPIO hog, then what is it?

Best regards,
Krzysztof