linux-kernel - Re: [PATCH v2 1/5] media: dt-bindings: ov5645: Convert OV5645 binding to a schema

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Message-ID: <CAL_JsqKC_BJDJLLFck_0CbQ-0rZ0oVWMAdiwwGep23nh2pP19g@mail.gmail.com>
Date:   Fri, 14 Oct 2022 16:05:45 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Prabhakar <prabhakar.csengg@...il.com>
Cc:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        Shawn Tu <shawnx.tu@...el.com>,
        Jacopo Mondi <jacopo@...ndi.org>, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2 1/5] media: dt-bindings: ov5645: Convert OV5645 binding
 to a schema

On Fri, Oct 14, 2022 at 1:35 PM Prabhakar <prabhakar.csengg@...il.com> wrote:
>
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> Convert the simple OV5645 Device Tree binding to json-schema.
>
> The previous binding marked the below properties as required which was a
> driver requirement and not the device requirement so just drop them from
> the required list during the conversion.
> - clock-frequency
> - enable-gpios
> - reset-gpios
>
> Also drop the "clock-names" property as we have a single clock source for
> the sensor and the driver has been updated to drop the clk referencing by
> name.

Driver requirements are the ABI!

This breaks a kernel without the driver change and a DTB that has
dropped the properties.

Also, with 'clock-names' dropped, you've just introduced a bunch of
warnings on other people's platforms. Are you going to 'fix' all of
them?

Rob