linux-kernel - Re: [PATCH v6 02/10] dt-bindings: mfd: brcm,bcm59056: Add compatible for BCM59054

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Message-ID: <20250304141933.GA2543583-robh@kernel.org>
Date: Tue, 4 Mar 2025 08:19:33 -0600
From: Rob Herring <robh@...nel.org>
To: Artur Weber <aweber.kernel@...il.com>
Cc: Lee Jones <lee@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Stanislav Jakubek <stano.jakubek@...il.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v6 02/10] dt-bindings: mfd: brcm,bcm59056: Add compatible
 for BCM59054

On Tue, Mar 04, 2025 at 07:20:33AM +0100, Artur Weber wrote:
> The BCM59054 MFD is fairly similar to the BCM59056, and will use
> the same driver. Add compatible and specify the allowed regulator
> nodes.
> 
> Signed-off-by: Artur Weber <aweber.kernel@...il.com>
> ---
> Changes in v6:
> - Replace mfd/brcm,bcm590xx.yaml with mfd/brcm,bcm59056.yaml
> 
> Changes in v5:
> - Replace mfd/brcm,bcm59056.yaml with mfd/brcm,bcm590xx.yaml in
>   regulator bindings description
> 
> Changes in v4:
> - Fix yamllint errors (missing unevaluatedProperties)
> - Drop comment with regulator name list
> - Use full schema paths for $reg
> - Change description of regulator binding to mention BCM59054
>   explicitly
> - Drop quotes around vbus reg name
> - Change "Power Management IC" to "Power Management Unit" to match
>   official Broadcom naming
> 
> Note that I did not end up moving the regulator refs from
> allOf compatible matches; I explained my reasoning in [1].
> 
> [1] https://lore.kernel.org/lkml/ab853605-859d-44c6-8cbd-44391cd677e6@gmail.com/
> 
> Changes in v3:
> - Split regulator node into separate file
> - Removed quotes around compatible
> ---
>  .../devicetree/bindings/mfd/brcm,bcm59056.yaml     | 26 +++++++++-
>  .../bindings/regulator/brcm,bcm59054.yaml          | 56 ++++++++++++++++++++++
>  2 files changed, 80 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/brcm,bcm59056.yaml b/Documentation/devicetree/bindings/mfd/brcm,bcm59056.yaml
> index b387ef9885c3ac524e0782545dbca9c0e81a556c..b67d7a723fc242869e5bdc6b3602785f62af45bd 100644
> --- a/Documentation/devicetree/bindings/mfd/brcm,bcm59056.yaml
> +++ b/Documentation/devicetree/bindings/mfd/brcm,bcm59056.yaml
> @@ -11,7 +11,9 @@ maintainers:
>  
>  properties:
>    compatible:
> -    const: brcm,bcm59056
> +    enum:
> +      - brcm,bcm59054
> +      - brcm,bcm59056
>  
>    reg:
>      maxItems: 1
> @@ -21,7 +23,6 @@ properties:
>  
>    regulators:
>      type: object
> -    $ref: /schemas/regulator/brcm,bcm59056.yaml#

Just do:

additionalProperties: true
properties:
  compatible:
    contains:
      enum:
        - brcm,bcm59056
        - brcm,bcm59054

(This patch should just add the last line)

And drop the allOf below.

>  
>  required:
>    - compatible
> @@ -30,6 +31,27 @@ required:
>  
>  additionalProperties: false
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: brcm,bcm59054
> +    then:
> +      properties:
> +        regulators:
> +          $ref: /schemas/regulator/brcm,bcm59054.yaml#
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: brcm,bcm59056
> +    then:
> +      properties:
> +        regulators:
> +          $ref: /schemas/regulator/brcm,bcm59056.yaml#
> +
>  examples:
>    - |
>      #include <dt-bindings/interrupt-controller/arm-gic.h>