Re: [PATCH v2 2/3] dt-bindings: display: panel: add TDO tl070wsh30 DSI panel bindings

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Hi Neil.

On Mon, Sep 07, 2020 at 03:24:47PM +0200, Neil Armstrong wrote:
> Hi,
> 
> On 07/09/2020 13:45, Sam Ravnborg wrote:
> > Hi Neil.
> > 
> > On Mon, Sep 07, 2020 at 01:10:26PM +0200, Neil Armstrong wrote:
> >> This add the bindings for the 1024*600 tl070wsh30 DSI panel.
> > 
> > The binding looks like a panel-simple-dsi.yaml candidate.
> > Only differen is enable-gpios versus reset-gpios
> 
> This is the only difference, the panel only has a reset signal and no
> enable signal.
> 
> But I can add a reset-gpios to panel-simple-dsi.yaml, would it be ok ?

Yes, that would be fine as long as it is not a required property.
It was a mistake we did not add it from the beginning.

There has been patches floating to add reset-gpios to panle.simple.c
that I rejected - this was also wrong.
Really simple and dumb panels has no reset but dsi panels that
panel-simple supports too has a reset.

	Sam


> 
> Neil
> 
> > 
> > Could you check if we can use panel-simple-dsi-yaml.
> > 
> > 	Sam
> > 
> >>
> >> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> >> ---
> >>  .../display/panel/tdo,tl070wsh30.yaml         | 58 +++++++++++++++++++
> >>  1 file changed, 58 insertions(+)
> >>  create mode 100644 Documentation/devicetree/bindings/display/panel/tdo,tl070wsh30.yaml
> >>
> >> diff --git a/Documentation/devicetree/bindings/display/panel/tdo,tl070wsh30.yaml b/Documentation/devicetree/bindings/display/panel/tdo,tl070wsh30.yaml
> >> new file mode 100644
> >> index 000000000000..20f4fdedfcb0
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/display/panel/tdo,tl070wsh30.yaml
> >> @@ -0,0 +1,58 @@
> >> +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> >> +# Copyright 2020 BayLibre, SAS
> >> +%YAML 1.2
> >> +---
> >> +$id: http://devicetree.org/schemas/display/panel/tdo,tl070wsh30.yaml#
> >> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >> +
> >> +title: TDO TL070WSH30 DSI panel
> >> +
> >> +maintainers:
> >> +  - Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> >> +
> >> +allOf:
> >> +  - $ref: panel-common.yaml#
> >> +
> >> +properties:
> >> +
> >> +  compatible:
> >> +    enum:
> >> +      - tdo,tl070wsh30
> >> +
> >> +  reg:
> >> +    maxItems: 1
> >> +    description: DSI virtual channel
> >> +
> >> +  backlight: true
> >> +  reset-gpios: true
> >> +  port: true
> >> +  power-supply: true
> >> +
> >> +additionalProperties: false
> >> +
> >> +required:
> >> +  - compatible
> >> +  - power-supply
> >> +  - reset-gpios
> >> +  - port
> >> +  - reg
> >> +
> >> +examples:
> >> +  - |
> >> +    dsi {
> >> +      #address-cells = <1>;
> >> +      #size-cells = <0>;
> >> +      panel@0 {
> >> +        compatible = "tdo,tl070wsh30";
> >> +        reg = <0>;
> >> +        power-supply = <&vcc_lcd_reg>;
> >> +        backlight = <&panel_backlight>;
> >> +        reset-gpios = <&gpio_reset>;
> >> +
> >> +        port {
> >> +          panel: endpoint {
> >> +            remote-endpoint = <&mipi_dsi_out>;
> >> +          };
> >> +        };
> >> +      };
> >> +    };
> >> -- 
> >> 2.22.0
> 
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