linux-kernel - Re: [PATCH v1 1/4] tps6105x: add optional devicetree support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 18 Nov 2019 17:45:50 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Sven Van Asbroeck <thesven73@...il.com>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>, Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Grigoryev Denis <grigoryev@...twel.ru>,
        Axel Lin <axel.lin@...ics.com>, Dan Murphy <dmurphy@...com>,
        Mark Rutland <mark.rutland@....com>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-leds@...r.kernel.org
Subject: Re: [PATCH v1 1/4] tps6105x: add optional devicetree support

On Mon, Nov 18, 2019 at 12:17:50PM -0500, Sven Van Asbroeck wrote:
> On Mon, Nov 18, 2019 at 12:01 PM Mark Brown <broonie@...nel.org> wrote:

> > We shouldn't need a compatible here, the MFD should just instantiate any
> > children it has.

> If the child node doesn't have a compatible, how would the driver be
> able to work
> out the operational mode? The chip can only be in a single operational mode
> at a time. So the child node has 'led' or 'regulator' compatible.

> Or is there a more elegant method I've overlooked?

So this is one device that has two separate modes?  This sounds like you
need a property specifying how the device is wired up, or possibly just
different compatibles at the root of the device though that's not quite
idiomatic.  Splitting this up with different devices is a bit of a Linux
specific implementation detail.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)