[PATCH] dt-bindings: display: Add SPI peripheral schema to SPI based displays

[Sam Ravnborg]

On Tue, Dec 21, 2021 at 08:52:09AM -0400, Rob Herring wrote:
> With 'unevaluatedProperties' support enabled, several SPI based display
> binding examples have warnings:
> 
> Documentation/devicetree/bindings/display/panel/samsung,ld9040.example.dt.yaml: lcd at 0: Unevaluated properties are not allowed ('#address-cells', '#size-cells', 'spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)
> Documentation/devicetree/bindings/display/panel/kingdisplay,kd035g6-54nt.example.dt.yaml: panel at 0: Unevaluated properties are not allowed ('spi-max-frequency', 'spi-3wire' were unexpected)
> Documentation/devicetree/bindings/display/panel/ilitek,ili9322.example.dt.yaml: display at 0: Unevaluated properties are not allowed ('reg' was unexpected)
> Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.example.dt.yaml: display at 0: Unevaluated properties are not allowed ('spi-max-frequency' was unexpected)
> Documentation/devicetree/bindings/display/panel/abt,y030xx067a.example.dt.yaml: panel at 0: Unevaluated properties are not allowed ('spi-max-frequency' was unexpected)
> Documentation/devicetree/bindings/display/panel/sony,acx565akm.example.dt.yaml: panel at 2: Unevaluated properties are not allowed ('spi-max-frequency', 'reg' were unexpected)
> Documentation/devicetree/bindings/display/panel/tpo,td.example.dt.yaml: panel at 0: Unevaluated properties are not allowed ('spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)
> Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.example.dt.yaml: panel at 0: Unevaluated properties are not allowed ('reg', 'spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)
> Documentation/devicetree/bindings/display/panel/innolux,ej030na.example.dt.yaml: panel at 0: Unevaluated properties are not allowed ('spi-max-frequency' was unexpected)
> Documentation/devicetree/bindings/display/panel/sitronix,st7789v.example.dt.yaml: panel at 0: Unevaluated properties are not allowed ('spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)
> 
> Fix all of these by adding a reference to spi-peripheral-props.yaml.
> With this, the description that the binding must follow
> spi-controller.yaml is both a bit out of date and redundant, so remove
> it.
> 
> Signed-off-by: Rob Herring <robh at kernel.org>
Acked-by: Sam Ravnborg <sam at ravnborg.org>