linux-kernel - Re: [PATCH v2 01/11] dt-bindings: clock: mobileye,eyeq5-clk: drop bindings

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Date: Thu, 20 Jun 2024 19:39:03 +0200
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: "Krzysztof Kozlowski" <krzysztof.kozlowski@...aro.org>, "Rob Herring"
 <robh@...nel.org>, "Krzysztof Kozlowski"
 <krzysztof.kozlowski+dt@...aro.org>, "Conor Dooley" <conor+dt@...nel.org>,
 "Michael Turquette" <mturquette@...libre.com>, "Stephen Boyd"
 <sboyd@...nel.org>, "Philipp Zabel" <p.zabel@...gutronix.de>, "Linus
 Walleij" <linus.walleij@...aro.org>, "Greg Kroah-Hartman"
 <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>, "Lee
 Jones" <lee@...nel.org>, "Thomas Bogendoerfer" <tsbogend@...ha.franken.de>
Cc: <linux-mips@...r.kernel.org>, <devicetree@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>,
 <linux-gpio@...r.kernel.org>, "Vladimir Kondratiev"
 <vladimir.kondratiev@...ileye.com>, "Gregory CLEMENT"
 <gregory.clement@...tlin.com>, "Thomas Petazzoni"
 <thomas.petazzoni@...tlin.com>, "Tawfik Bayouk"
 <tawfik.bayouk@...ileye.com>
Subject: Re: [PATCH v2 01/11] dt-bindings: clock: mobileye,eyeq5-clk: drop
 bindings

Hello Krzysztof,

On Tue May 7, 2024 at 5:34 PM CEST, Krzysztof Kozlowski wrote:
> On 07/05/2024 17:07, Théo Lebrun wrote:
> > Proposal from Stephen Boyd of using auxiliary devices makes sense, that
> > could be the future direction of this series. It won't change the
> > dt-bindings aspect of it, only the driver implementations.
> > 
> > [0]: https://lore.kernel.org/lkml/daa732cb31d947c308513b535930c729.sboyd@kernel.org/
> > [1]: https://lore.kernel.org/lkml/20240124151405.GA930997-robh@kernel.org/
>
> So after Robs comment above, you still pushed the wrong approach and now
> you revert it?

Yes. The gist of it is that I had misunderstood the messages. Mostly, I
did not understand how to implement separate Linux driver with the
desired devicetree structure (no subnode on the syscon for each
feature). I was missing knowledge about Linux infrastructure allowing
for that. MFD and auxdevs are two approaches, with auxdevs being
preferred.

The latest revision finally takes those comments into account.

Thanks Krzysztof,

--
Théo Lebrun, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com