Re: [PATCH v2 1/5] dt-bindings: display: sitronix,st7735r: Convert to DT schema

[Geert Uytterhoeven]

Hi Sam,

On Wed, Jan 15, 2020 at 10:01 PM Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:
> On Wed, Jan 15, 2020 at 01:45:44PM +0100, Geert Uytterhoeven wrote:
> > Convert the DT binding documentation for Sitronix ST7735R displays to DT
> > schema.
> >
> > Add a reference to the Adafruit 1.8" LCD while at it.
> >
> > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> > ---
>
> > diff --git a/Documentation/devicetree/bindings/display/sitronix,st7735r.yaml b/Documentation/devicetree/bindings/display/sitronix,st7735r.yaml
> > new file mode 100644
> > index 0000000000000000..21bccc91f74255e1
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/sitronix,st7735r.yaml
> > @@ -0,0 +1,65 @@
> > +# SPDX-License-Identifier: GPL-2.0-only
> Use (GPL-2.0-only OR BSD-2-Clause) for new binding files.

I used GPL-2.0-only, as this is a conversion of an existing binding file,
covered by the default GPL-2.0-only of the Linux kernel source tree.

> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/sitronix,st7735r.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Sitronix ST7735R Display Panels Device Tree Bindings
> > +
> > +maintainers:
> > +  - David Lechner <david@xxxxxxxxxxxxxx>
> > +
> > +description:
> > +  This binding is for display panels using a Sitronix ST7735R controller in
> > +  SPI mode.
> > +
> > +allOf:
> > +  - $ref: panel/panel-common.yaml#
>
> I am no binding expert so I do not know how to add it.
> But the old binding described that this MUST be a child of spi.
> This is missing here.
>
> Other panels using spi does not have it - so it is probarly OK.

Yeah, I couldn't find any examples of expressing that requirement in yaml.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds