Re: [PATCH] dt-bindings: Clean-up regulator '-supply' schemas

[Jonathan Cameron]

On Fri, 11 Oct 2019 14:02:31 -0500
Rob Herring <robh@xxxxxxxxxx> wrote:

> Regulator '*-supply' properties are always a single phandle, so
> 'maxItems: 1' or a $ref is not necessary. All that's needed is either
> 'true' or an optional 'description'. Following this clean-up, the
> meta-schema will enforce this pattern.
> 
> There's one case in tree with 'innolux,n156bge-l21' having 2 phandles.
> This appears to be a mistake or abuse of simple-panel as it's 2 different
> voltage rails connected to 'power-supply'.

Nice to centralise bits of schema like this, though perhaps it does
make everything feel a bit unpredictable as not obvious to someone writing
a binding that a particular corner has been centralized but others haven't.

Oh well, I guess they should look at the relevant docs for each bit.

Acked-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> # for iio

Thanks,

Jonathan

> 
> Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> Cc: Kevin Hilman <khilman@xxxxxxxxxxxx>
> Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
> Cc: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> Cc: Kishon Vijay Abraham I <kishon@xxxxxx>
> Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
> Cc: Mark Brown <broonie@xxxxxxxxxx>
> Cc: linux-iio@xxxxxxxxxxxxxxx
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
>  .../devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml   | 2 --
>  Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml  | 3 +--
>  Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml  | 3 +--
>  Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml   | 3 +--
>  Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml    | 3 ---
>  Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml    | 5 +----
>  Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml    | 1 -
>  Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml    | 1 -
>  .../devicetree/bindings/iio/adc/samsung,exynos-adc.yaml      | 4 +---
>  .../devicetree/bindings/iio/chemical/plantower,pms7003.yaml  | 1 -
>  Documentation/devicetree/bindings/iio/pressure/bmp085.yaml   | 2 --
>  .../devicetree/bindings/phy/amlogic,meson-g12a-usb2-phy.yaml | 1 -
>  .../devicetree/bindings/regulator/fixed-regulator.yaml       | 1 -
>  13 files changed, 5 insertions(+), 25 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml
> index fb747682006d..0da42ab8fd3a 100644
> --- a/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml
> +++ b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml
> @@ -79,8 +79,6 @@ properties:
>  
>    hdmi-supply:
>      description: phandle to an external 5V regulator to power the HDMI logic
> -    allOf:
> -      - $ref: /schemas/types.yaml#/definitions/phandle
>  
>    port@0:
>      type: object
> diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
> index 5f1fd6d7ee0f..e50a0cc78fff 100644
> --- a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
> +++ b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
> @@ -37,8 +37,7 @@ properties:
>    clocks:
>      maxItems: 1
>  
> -  mali-supply:
> -    maxItems: 1
> +  mali-supply: true
>  
>    operating-points-v2: true
>  
> diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
> index 47bc1ac36426..5c576e5019c6 100644
> --- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
> +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
> @@ -69,8 +69,7 @@ properties:
>        - const: core
>        - const: bus
>  
> -  mali-supply:
> -    maxItems: 1
> +  mali-supply: true
>  
>    resets:
>      minItems: 1
> diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml
> index c5d93c5839d3..afde81be3c29 100644
> --- a/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml
> +++ b/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml
> @@ -97,8 +97,7 @@ properties:
>  
>    memory-region: true
>  
> -  mali-supply:
> -    maxItems: 1
> +  mali-supply: true
>  
>    power-domains:
>      maxItems: 1
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml
> index 9692b7f719f5..e932d5aed02f 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml
> @@ -45,15 +45,12 @@ properties:
>  
>    refin1-supply:
>      description: refin1 supply can be used as reference for conversion.
> -    maxItems: 1
>  
>    refin2-supply:
>      description: refin2 supply can be used as reference for conversion.
> -    maxItems: 1
>  
>    avdd-supply:
>      description: avdd supply can be used as reference for conversion.
> -    maxItems: 1
>  
>  required:
>    - compatible
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> index cc544fdc38be..6eb33207a167 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> @@ -31,10 +31,7 @@ properties:
>  
>    spi-cpha: true
>  
> -  avcc-supply:
> -    description:
> -      Phandle to the Avcc power supply
> -    maxItems: 1
> +  avcc-supply: true
>  
>    interrupts:
>      maxItems: 1
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml
> index d1109416963c..9acde6d2e2d9 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml
> @@ -39,7 +39,6 @@ properties:
>    avdd-supply:
>      description:
>        The regulator supply for the ADC reference voltage.
> -    maxItems: 1
>  
>    powerdown-gpios:
>      description:
> diff --git a/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml b/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml
> index d76ece97c76c..91ab9c842273 100644
> --- a/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml
> @@ -41,7 +41,6 @@ properties:
>    avdd-supply:
>      description:
>        Definition of the regulator used as analog supply
> -    maxItems: 1
>  
>    clock-frequency:
>      minimum: 20000
> diff --git a/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml b/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml
> index b4c6c26681d9..9218b2efa62f 100644
> --- a/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml
> @@ -46,9 +46,7 @@ properties:
>    "#io-channel-cells":
>      const: 1
>  
> -  vdd-supply:
> -    description: VDD input supply
> -    maxItems: 1
> +  vdd-supply: true
>  
>    samsung,syscon-phandle:
>      $ref: '/schemas/types.yaml#/definitions/phandle'
> diff --git a/Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml b/Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
> index a551d3101f93..19e53930ebf6 100644
> --- a/Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
> +++ b/Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
> @@ -25,7 +25,6 @@ properties:
>  
>    vcc-supply:
>      description: regulator that provides power to the sensor
> -    maxItems: 1
>  
>    plantower,set-gpios:
>      description: GPIO connected to the SET line
> diff --git a/Documentation/devicetree/bindings/iio/pressure/bmp085.yaml b/Documentation/devicetree/bindings/iio/pressure/bmp085.yaml
> index c6721a7e8938..519137e5c170 100644
> --- a/Documentation/devicetree/bindings/iio/pressure/bmp085.yaml
> +++ b/Documentation/devicetree/bindings/iio/pressure/bmp085.yaml
> @@ -28,12 +28,10 @@ properties:
>    vddd-supply:
>      description:
>        digital voltage regulator (see regulator/regulator.txt)
> -    maxItems: 1
>  
>    vdda-supply:
>      description:
>        analog voltage regulator (see regulator/regulator.txt)
> -    maxItems: 1
>  
>    reset-gpios:
>      description:
> diff --git a/Documentation/devicetree/bindings/phy/amlogic,meson-g12a-usb2-phy.yaml b/Documentation/devicetree/bindings/phy/amlogic,meson-g12a-usb2-phy.yaml
> index 51254b4e65dd..57d8603076bd 100644
> --- a/Documentation/devicetree/bindings/phy/amlogic,meson-g12a-usb2-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/amlogic,meson-g12a-usb2-phy.yaml
> @@ -36,7 +36,6 @@ properties:
>      const: 0
>  
>    phy-supply:
> -     maxItems: 1
>       description:
>         Phandle to a regulator that provides power to the PHY. This
>         regulator will be managed during the PHY power on/off sequence.
> diff --git a/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml b/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
> index a78150c47aa2..e56d97b233f4 100644
> --- a/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
> +++ b/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
> @@ -64,7 +64,6 @@ properties:
>  
>    vin-supply:
>      description: Input supply phandle.
> -    $ref: /schemas/types.yaml#/definitions/phandle
>  
>  required:
>    - compatible