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

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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).

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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