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Message-ID: <20200917111227.GG3306@latitude>
Date:   Thu, 17 Sep 2020 13:12:27 +0200
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     Rob Herring <robh@...nel.org>
Cc:     Jonathan Neuschäfer <j.neuschaefer@....net>,
        linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Sam Ravnborg <sam@...nborg.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>,
        Stephan Gerhold <stephan@...hold.net>,
        Lubomir Rintel <lkundrak@...sk>,
        Mark Brown <broonie@...nel.org>, allen <allen.chen@....com.tw>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        devicetree@...r.kernel.org, linux-pwm@...r.kernel.org,
        linux-rtc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Heiko Stuebner <heiko@...ech.de>,
        Josua Mayer <josua.mayer@....eu>,
        Andreas Kemnade <andreas@...nade.info>,
        Arnd Bergmann <arnd@...db.de>, Daniel Palmer <daniel@...f.com>
Subject: Re: [PATCH v2 02/10] dt-bindings: mfd: Add binding for Netronix's
 embedded controller

On Mon, Sep 14, 2020 at 06:50:34PM -0600, Rob Herring wrote:
> On Sat, Sep 05, 2020 at 03:32:22PM +0200, Jonathan Neuschäfer wrote:
> > This EC is found in e-book readers of multiple brands (e.g. Kobo,
> > Tolino), and is typically implemented as a TI MSP430 microcontroller.
[...]

> > +required:
> > +  - compatible
> > +  - reg
> 
> additionalProperties: false

Ok, I'll add that.

> > +                    interrupt-controller;
> > +                    #interrupt-cells = <1>;
> 
> These need to be documented too.

Interrupt support is something I haven't really worked out yet for this
(set of) binding(s). My idea here was to have the embedded-controller
node act as an interrupt controller, and the subnodes use specific
interrupts that are relevant for their functionality.

I think I'll rather omit the interrupt-controller and #interrupt-cells
properties now, and add them later if they become necessary. If the pwm
and rtc nodes are merged into the main node, I don't think they will
become necessary.


Thanks,
Jonathan Neuschäfer

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