Re: [PATCH v2 24/36] dt-bindings: display: convert toppoly panels to DT Schema

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On Thu, Apr 09, 2020 at 08:21:16AM +0200, H. Nikolaus Schaller wrote:
> Hi Sam,
> 
> > Am 08.04.2020 um 21:50 schrieb Sam Ravnborg <sam@xxxxxxxxxxxx>:
> > 
> > v2:
> >  - dropped use of spi-slave.yaml (Maxime)
> >  - added unevaluatedProperties (Maxime)
> > 
> > Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> > Cc: Maxime Ripard <mripard@xxxxxxxxxx>
> > Cc: Marek Belisko <marek@xxxxxxxxxxxxx>
> > Cc: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
> > Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
> > ---
> > .../bindings/display/panel/tpo,td.yaml        | 65 +++++++++++++++++++
> > .../bindings/display/panel/tpo,td028ttec1.txt | 32 ---------
> > .../bindings/display/panel/tpo,td043mtea1.txt | 33 ----------
> > 3 files changed, 65 insertions(+), 65 deletions(-)
> > create mode 100644 Documentation/devicetree/bindings/display/panel/tpo,td.yaml
> > delete mode 100644 Documentation/devicetree/bindings/display/panel/tpo,td028ttec1.txt
> > delete mode 100644 Documentation/devicetree/bindings/display/panel/tpo,td043mtea1.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/display/panel/tpo,td.yaml b/Documentation/devicetree/bindings/display/panel/tpo,td.yaml
> > new file mode 100644
> > index 000000000000..4aa605613445
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/panel/tpo,td.yaml
> > @@ -0,0 +1,65 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/panel/tpo,td.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Toppoly TD Panels
> > +
> > +description: |
> > +  The panel must obey the rules for a SPI slave device as specified in
> > +  spi/spi-controller.yaml
> > +
> > +maintainers:
> > +  - Marek Belisko <marek@xxxxxxxxxxxxx>
> > +  - H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
> > +
> > +allOf:
> > +  - $ref: panel-common.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +        # Toppoly TD028TTEC1 Panel
> > +      - tpo,td028ttec1
> > +        # Toppoly TD043MTEA1 Panel
> > +      - tpo,td043mtea1
> > +
> > +  reg: true
> > +  label: true
> > +  reset-gpios: true
> > +  backlight: true
> > +  port: true
> > +
> > +required:
> > +  - compatible
> > +  - port
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > +  - |
> > +    spi {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        panel: panel@0 {
> > +            compatible = "tpo,td043mtea1";
> > +            reg = <0>;
> > +            spi-max-frequency = <100000>;
> > +            spi-cpol;
> > +            spi-cpha;
> > +
> > +            label = "lcd";
> > +
> > +            reset-gpios = <&gpio7 7 0>;
> > +
> > +            port {
> > +                lcd_in: endpoint {
> > +                    remote-endpoint = <&dpi_out>;
> > +                };
> > +            };
> > +        };
> > +    };
> 
> I think it is possible to add two examples (the one for tpo,td028ttec1)
> as well. The reason is that it must also have spi-cs-high; which isn't
> documented anywhere else and wasn't in tpo,td028ttec1.txt.

I don't think we need another example because examples are not a 
enumeration for what's allowed. There should be an if/then schema though 
for this. That can be a follow-up IMO.

Rob
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