linux-kernel - Re: [PATCH v4 1/7] dt-bindings: hwmon: Add nuvoton,nct6775

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Date:   Wed, 27 Apr 2022 08:04:30 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Zev Weiss <zev@...ilderbeest.net>,
        Guenter Roeck <linux@...ck-us.net>,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org
Cc:     Renze Nicolai <renze@...lus.nl>,
        Oleksandr Natalenko <oleksandr@...alenko.name>,
        openbmc@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/7] dt-bindings: hwmon: Add nuvoton,nct6775

On 27/04/2022 03:01, Zev Weiss wrote:
> These Super I/O chips have an i2c interface that some systems expose
> to a BMC; the BMC's device tree can now describe that via this
> binding.
> 
> Signed-off-by: Zev Weiss <zev@...ilderbeest.net>

I already reviewed it so I guess you did not include the tag because of
significant changes?

> ---
>  .../bindings/hwmon/nuvoton,nct6775.yaml       | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml b/Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml
> new file mode 100644
> index 000000000000..418477374fdb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +
> +$id: http://devicetree.org/schemas/hwmon/nuvoton,nct6775.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Nuvoton NCT6775 and compatible Super I/O chips
> +
> +maintainers:
> +  - Zev Weiss <zev@...ilderbeest.net>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - nuvoton,nct6106
> +      - nuvoton,nct6116
> +      - nuvoton,nct6775
> +      - nuvoton,nct6776
> +      - nuvoton,nct6779
> +      - nuvoton,nct6791
> +      - nuvoton,nct6792
> +      - nuvoton,nct6793
> +      - nuvoton,nct6795
> +      - nuvoton,nct6796
> +      - nuvoton,nct6797
> +      - nuvoton,nct6798
> +
> +  reg:
> +    maxItems: 1
> +
> +  nuvoton,tsi-channel-mask:
> +    description:
> +      Bitmask indicating which TSI temperature sensor channels are
> +      active.  LSB is TSI0, bit 1 is TSI1, etc.

Need a type/ref.

> +    maximum: 0xff
> +    default: 0

Since by default it is disabled, doesn't it make a required property?
IOW, if you add a node without this mask, will the device operate
properly and usefully?




Best regards,
Krzysztof