linux-kernel - Re: [PATCH] ARM: dts: sun8i-v3s: Add CSI0 MCLK pin definition

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Date:   Mon, 18 Jan 2021 14:25:42 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Paul Kocialkowski <contact@...lk.fr>
Cc:     devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>
Subject: Re: [PATCH] ARM: dts: sun8i-v3s: Add CSI0 MCLK pin definition

On Wed, Dec 30, 2020 at 11:29 AM Chen-Yu Tsai <wens@...e.org> wrote:
>
> On Tue, Dec 22, 2020 at 4:17 PM Jernej Škrabec <jernej.skrabec@...l.net> wrote:
> >
> > Hi!
> >
> > Dne petek, 18. december 2020 ob 20:50:33 CET je Paul Kocialkowski napisal(a):
> > > This adds a device-tree definition for the CSI0 MCLK pin,
> > > which can be used for feeding MIPI CSI-2 sensors.
> > >
> > > Signed-off-by: Paul Kocialkowski <contact@...lk.fr>
> >
> > Is this used anywhere? Current policy is to add pin definitions only if any
> > user exists.
>
> IIRC we sort of loosened that requirement with the use of /omit-if-no-ref/.
> The A20 dtsi file has a whole bunch of pins defined that are not directly
> used but are available for users to reference, especially in overlays.
> The "-@" parameter for the device tree compiler, used to build overlay
> compatible DTBs, makes the compiler ignore /omit-if-no-ref/ and include
> all the nodes.

I've queued up this patch for 5.12.

ChenYu