linux-kernel - Re: [PATCH v3 1/5] dt-bindings: gpio: Add HPE GXP GPIO

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Date:   Tue, 6 Jun 2023 11:30:03 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     nick.hawkins@....com, verdun@....com, linus.walleij@...aro.org,
        brgl@...ev.pl, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, jdelvare@...e.com,
        linux@...ck-us.net, andy.shevchenko@...il.com,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org
Subject: Re: [PATCH v3 1/5] dt-bindings: gpio: Add HPE GXP GPIO

On 06/06/2023 03:42, nick.hawkins@....com wrote:
> From: Nick Hawkins <nick.hawkins@....com>
> 
> Provide access to the register regions and interrupt for GPIO. There
> will be two drivers available. The first driver under the hpe,gxp-gpio
> binding will provide GPIO information for the VUHC, CSM, and FN2
> host interfaces. The second driver under the hpe,gxp-gpio-pl will
> provide GPIO information from the CPLD interface. The main difference
> and need for two separate bindings is they have different interrupt
> parents. The other is hpe,gxp-gpio is a combination of physical
> and virtual GPIOs where as hpe,gxp-gpio-pl are all physical
> GPIOs from the CPLD.
> 
> Signed-off-by: Nick Hawkins <nick.hawkins@....com>

Thank you for your patch. There is something to discuss/improve.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - hpe,gxp-gpio
> +      - hpe,gxp-gpio-pl
> +
> +  reg:
> +    minItems: 2
> +    maxItems: 6

Why 6? You have 4 items in allOf:if:then.

> +
> +  reg-names:
> +    minItems: 2
> +    maxItems: 6
> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +  gpio-line-names:
> +    minItems: 80
> +    maxItems: 300
> +
> +  interrupts:
> +    maxItems: 1
> +

Best regards,
Krzysztof