Re: [PATCH 2/3] dt-bindings: Add Mantix MLAF057WE51-X panel bindings

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Hi Guido.

On Sat, Aug 15, 2020 at 06:47:37PM +0200, Guido Günther wrote:
> Hi Sam,
> On Sat, Aug 15, 2020 at 10:39:17AM +0200, Sam Ravnborg wrote:
> > Hi Guido.
> > 
> > On Fri, Aug 14, 2020 at 03:36:22PM +0200, Guido Günther wrote:
> > > The panel uses a Focaltech FT8006p, the touch part is handled by the
> > > already existing edt-ft5x06.
> > > 
> > > Signed-off-by: Guido Günther <agx@xxxxxxxxxxx>
> > 
> > A few trivialities.
> 
> Thanks for having a look. One remark inline:
> 
> > 
> > > ---
> > >  .../display/panel/mantix,mlaf057we51-x.yaml   | 73 +++++++++++++++++++
> > >  1 file changed, 73 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
> > > 
> > > diff --git a/Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml b/Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
> > > new file mode 100644
> > > index 0000000000000..349f3380ac940
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
> > > @@ -0,0 +1,73 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/display/panel/mantix,mlaf057we51-x.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Mantix MLAF057WE51-X 5.7" 720x1440 TFT LCD panel
> > > +
> > > +maintainers:
> > > +  - Guido Günther <agx@xxxxxxxxxxx>
> > > +
> > > +description: |
> > > +             Mantix MLAF057WE51 X is a 720x1440 TFT LCD panel
> > > +             connected using a MIPI-DSI video interface.
> > Indent text with two spaces only.
> > And I have learned that '|' is only needed to preserve formatting - so
> > it can be dropped.
> > 
> > > +
> > > +allOf:
> > > +  - $ref: panel-common.yaml#
> > > +
> > > +properties:
> > > +  compatible:
> > > +    enum:
> > > +      - mantix,mlaf057we51-x
> > This is a list - so needs an extra 2 spaces indent.
> > See https://lore.kernel.org/linux-devicetree/f1963eb9-283f-e903-2a3a-4f324d71d418@xxxxxxxxxxxxxxxx/T/#m65900317fb948f6c40e8fb521f2201fba3c301a7
> > for examples where Rob fixes this.
> 
> Doesn't this only apply if the 'outer element' is a list too so e.g.:
> 
>    - enum
>      - foo
> 
> trips up yamllint but
> 
>    enum
>      - foo
> 
> doesn't. Since yamllint was happy i kept it as is (looking at your
> reference suggests that too).

You are right, I missed that this was not a list (no '-' in front of
enum).
I would not be able to do this right without tool assistance.

	Sam

> 
> All the rest made sense and i fixed that for the upcoming v2.
> Thanks for having a look!
>  -- Guido
> 
> > 
> > > +
> > > +  port: true
> > > +  reg:
> > > +    maxItems: 1
> > > +    description: DSI virtual channel
> > > +
> > > +  avdd-supply:
> > > +    description: Positive analog power supply
> > > +
> > > +  avee-supply:
> > > +    description: Negative analog power supply
> > > +
> > > +  vddi-supply:
> > > +    description: 1.8V I/O voltage supply
> > > +
> > > +  reset-gpios:
> > > +    description: GPIO used for the reset pin
> > > +    maxItems: 1
> > Use reset-gpios: true as we already have it in panel-common.yaml
> > 
> > > +
> > > +  backlight:
> > > +    description: Backlight used by the panel
> > > +    $ref: "/schemas/types.yaml#/definitions/phandle"
> > Use backlight from panel-common.yaml.
> > 
> > > +
> > > +required:
> > > +  - compatible
> > > +  - reg
> > > +  - avdd-supply
> > > +  - avee-supply
> > > +  - vddi-supply
> > > +  - reset-gpios
> > > +
> > > +additionalProperties: false
> > > +
> > > +examples:
> > > +  - |
> > > +    #include <dt-bindings/gpio/gpio.h>
> > > +
> > > +    dsi {
> > My personal preference is indent with 4 spaces in examples but there are
> > no rules so feel free to ignore.
> > > +      #address-cells = <1>;
> > > +      #size-cells = <0>;
> > > +      panel@0 {
> > > +        compatible = "mantix,mlaf057we51-x";
> > > +        reg = <0>;
> > > +        avdd-supply = <&reg_avdd>;
> > > +        avee-supply = <&reg_avee>;
> > > +        vddi-supply = <&reg_1v8_p>;
> > > +        reset-gpios = <&gpio1 29 GPIO_ACTIVE_LOW>;
> > > +        backlight = <&backlight>;
> > > +      };
> > > +    };
> > I think we need an ampty line here.
> > > +...
> > > -- 
> > > 2.26.2
> > > 
> > > _______________________________________________
> > > dri-devel mailing list
> > > dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
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