Re: [PATCH v1 1/4] dt-bindings: mfd: Add DT bindings for TI TPS6594 PMIC

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On 16/02/2023 12:44, Julien Panis wrote:
> TPS6594 is a Power Management IC which provides regulators and others

Subject: drop second/last, redundant "DT bindings for". The
"dt-bindings" prefix is already stating that these are bindings.


> features like GPIOs, RTC, watchdog, ESMs (Error Signal Monitor), and
> PFSM (Pre-configurable Finite State Machine) managing the state of the
> device.
> TPS6594 is the super-set device while TPS6593 and LP8764X are derivatives.
> 
> Signed-off-by: Julien Panis <jpanis@xxxxxxxxxxxx>
> ---
>  .../devicetree/bindings/mfd/ti,tps6594.yaml   | 164 ++++++++++++++++++
>  1 file changed, 164 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml b/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
> new file mode 100644
> index 000000000000..37968d6c0420
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
> @@ -0,0 +1,164 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/ti,tps6594.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TI TPS6594 Power Management Integrated Circuit
> +
> +maintainers:
> +  - Julien Panis <jpanis@xxxxxxxxxxxx>
> +
> +description: |
> +  TPS6594 is a Power Management IC which provides regulators and others
> +  features like GPIOs, RTC, watchdog, ESMs (Error Signal Monitor), and
> +  PFSM (Pre-configurable Finite State Machine) managing the state of the device.
> +  TPS6594 is the super-set device while TPS6593 and LP8764X are derivatives.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,tps6594
> +      - ti,tps6593
> +      - ti,lp8764x

Any particular choice of ordering (different than alphabetical)?

> +
> +  reg:
> +    description: I2C slave address or SPI chip select number.
> +    maxItems: 1
> +
> +  ti,use-crc:
> +    type: boolean
> +    description: If true, use CRC for I2C and SPI interface protocols.

Hm, why different boards would like to enable or disable it? Why this
suits DT?

> +
> +  system-power-controller: true
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  ti,multi-phase-id:
> +    description: |
> +      Describes buck multi-phase configuration, if any. For instance, XY id means
> +      that outputs of buck converters X and Y are combined in multi-phase mode.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [12, 34, 123, 1234]
> +
> +patternProperties:
> +  "^buck([1-5]|12|34|123|1234)-supply$":
> +    description: Input supply phandle for each buck.
> +
> +  "^ldo[1-4]-supply$":
> +    description: Input supply phandle for each ldo.
> +
> +  regulators:

This should go to properties, not patternProperties.

> +    type: object
> +    description: List of regulators provided by this controller.
> +
> +    patternProperties:
> +      "^buck([1-5]|12|34|123|1234)$":
> +        type: object
> +        $ref: /schemas/regulator/regulator.yaml#
> +
> +        unevaluatedProperties: false
> +
> +      "^ldo[1-4]$":
> +        type: object
> +        $ref: /schemas/regulator/regulator.yaml#
> +
> +        unevaluatedProperties: false
> +

You could add here - on this level - of indentation allOf:if for
excluding setups

if:
  required:
    - buck12
then:
  properties:
    buck123: false
    buck1234: false

Or, if you want to require regulator then:
oneOf:
  - required:
      - buck12
  - required:
      - buck123
  - required:
      - buck1234

and anyway exclude buck34 with two above.

> +    additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false



Best regards,
Krzysztof




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