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Message-ID: <20200915194740.GA2385241@bogus>
Date:   Tue, 15 Sep 2020 13:47:40 -0600
From:   Rob Herring <robh@...nel.org>
To:     Nishanth Menon <nm@...com>
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        BenoƮt 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, Sep 10, 2020 at 02:13:05PM -0500, Nishanth Menon wrote:
> On 20:53-20200910, Krzysztof Kozlowski wrote:
> > 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?
> 
> Probably a nitpick.. but then,.. I have'nt seen us depend on hierarchy
> for uniqueness of naming.. we choose for example "bus" no matter where
> in the hierarchy it falls in, as long it is a bus.. etc.. same argument
> holds good for properties as well.. "gpio-hog;" is kinda redundant if
> you think of it for a compatible that is already gpio ;)..
> 
> I did'nt mean to de-rail the discussion, but was curious what the DT
> maintainers think..

Not really a fan of gpio-hog binding to have another type of hog nor can 
I imagine what that would be.

Rob

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