[PATCH v3 01/13] dt-bindings: display: Convert common panel bindings to DT schema

Geert Uytterhoeven geert at linux-m68k.org
Fri Oct 25 13:07:04 UTC 2019

Hi Rob,

On Fri, Jul 5, 2019 at 6:46 PM Rob Herring <robh at kernel.org> wrote:
> Convert the common panel bindings to DT schema consolidating scattered
> definitions to a single schema file.
> The 'simple-panel' binding just a collection of properties and not a
> complete binding itself. All of the 'simple-panel' properties are
> covered by the panel-common.txt binding with the exception of the
> 'no-hpd' property, so add that to the schema.
> As there are lots of references to simple-panel.txt, just keep the file
> with a reference to common.yaml for now until all the bindings are
> converted.
> Cc: Thierry Reding <thierry.reding at gmail.com>
> Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> Cc: dri-devel at lists.freedesktop.org
> Acked-by: Sam Ravnborg <sam at ravnborg.org>
> Reviewed-by: Maxime Ripard <maxime.ripard at bootlin.com>
> Reviewed-by: Thierry Reding <treding at nvidia.com>
> Signed-off-by: Rob Herring <robh at kernel.org>

This is now commit 821a1f7171aeea5e ("dt-bindings: display: Convert
common panel bindings to DT schema").

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml

> +  backlight:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      For panels whose backlight is controlled by an external backlight
> +      controller, this property contains a phandle that references the
> +      controller.

This paragraph seems to apply to all nodes named "backlight", causing
e.g. (for ARCH=arm mach_shmobile_defconfig) "make dtbs_check
to start complaining:

    arch/arm/boot/dts/r8a7740-armadillo800eva.dt.yaml: backlight:
{'compatible': ['pwm-backlight'], 'pwms': [[40, 2, 33333, 1]],
'brightness-levels': [[0, 1, 2, 4, 8, 16, 32, 64, 128, 255]],
'default-brightness-level': [[9]], 'pinctrl-0': [[41]],
'pinctrl-names': ['default'], 'power-supply': [[42]], 'enable-gpios':
[[15, 61, 0]]} is not of type 'array'
    arch/arm/boot/dts/r8a7740-armadillo800eva.dt.yaml: backlight:
{'groups': ['tpu0_to2_1'], 'function': ['tpu0'], 'phandle': [[41]]} is
not of type 'array'

Do you know what's wrong?




Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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