linux-kernel - Re: [PATCH v2 1/6] Documentation: tps6594x: Add DT bindings for the TPS6594x PMIC

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Message-ID: <20220816172049.GA2399563-robh@kernel.org>
Date:   Tue, 16 Aug 2022 11:20:49 -0600
From:   Rob Herring <robh@...nel.org>
To:     Matt Ranostay <mranostay@...com>
Cc:     nm@...com, j-keerthy@...com, lee@...nel.org,
        linux-kernel@...r.kernel.org, linux-rtc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 1/6] Documentation: tps6594x: Add DT bindings for the
 TPS6594x PMIC

On Thu, Aug 11, 2022 at 08:22:37PM -0700, Matt Ranostay wrote:
> Signed-off-by: Matt Ranostay <mranostay@...com>

Commit message? Use a subject prefix appropriate for the subsystem.

> ---
>  .../devicetree/bindings/mfd/ti,tps6594x.yaml  | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/ti,tps6594x.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mfd/ti,tps6594x.yaml b/Documentation/devicetree/bindings/mfd/ti,tps6594x.yaml
> new file mode 100644
> index 000000000000..9b5e17f63709
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/ti,tps6594x.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/ti,tps6594x.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TPS6594x Power Management Integrated Circuit (PMIC)
> +
> +maintainers:
> +  - Keerthy <j-keerthy@...com>
> +
> +properties:
> +  compatible:
> +    contains:

No, this means '"foo", "ti,tps6594x", "bar"' is valid.

> +      enum:

Use 'const' if only 1 entry.

> +        - ti,tps6594x

Don't use wildcards in compatible strings.

> +
> +  reg:
> +    const: 0x48
> +    description: I2C slave address
> +
> +  ti,system-power-controller:
> +    type: boolean
> +    description: PMIC is controlling the system power.
> +
> +  rtc:

Why do you need a sub-node here? Is the RTC a separate block with its 
own resources?

> +    type: object
> +    $ref: /schemas/rtc/rtc.yaml#
> +    unevaluatedProperties: false
> +    properties:
> +      compatible:
> +        const: ti,tps6594x-rtc
> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    i2c0 {

i2c {

> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        pmic: pmic@48 {
> +            compatible = "ti,tps6594x";
> +            reg = <0x48>;
> +
> +            rtc {
> +                compatible = "ti,tps6594x-rtc";
> +            };
> +        };
> +    };
> +
> +...
> -- 
> 2.36.1
> 
>