linux-kernel - Re: [PATCH v1 1/2] dt-bindings: hwmon: Add lltc ltc4286 driver bindings

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Message-ID: <321a84c6-6d74-4042-a6ce-6229073c8d30@roeck-us.net>
Date:   Mon, 24 Apr 2023 06:49:31 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
Cc:     patrick@...cx.xyz, Jean Delvare <jdelvare@...e.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-i2c@...r.kernel.org, linux-hwmon@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] dt-bindings: hwmon: Add lltc ltc4286 driver
 bindings

On Mon, Apr 24, 2023 at 06:13:49PM +0800, Delphine CC Chiu wrote:
> Add a device tree bindings for ltc4286 driver.
> 
> Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
> ---
>  .../bindings/hwmon/lltc,ltc4286.yaml          | 47 +++++++++++++++++++
>  MAINTAINERS                                   |  9 ++++
>  2 files changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml b/Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml
> new file mode 100644
> index 000000000000..c1c8e310f9c4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml
> @@ -0,0 +1,47 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hwmon/lltc,ltc4286.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: LTC4286 power monitors
> +
> +maintainers:
> +  - Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - lltc,ltc4286
> +      - lltc,ltc4287

There is no LTC4287, at least according to the Analog website.

> +
> +  reg:
> +    maxItems: 1
> +
> +  vrange_select_25p6:
> +    description:
> +      This property is a bool parameter to represent the
> +      voltage range is 25.6 or not for this chip.

Existing attributes are adi,vrange-high-enable, ti,extended-range-enable,
ti,bus-range-microvolt, adi,range-double. I would suggest to use
adi,vrange-high-enable.

> +
> +  rsense-micro-ohms:
> +    description:
> +      Resistor value in micro-Ohm

I would suggest either shunt-resistor-micro-ohms or
sense-resistor-micro-ohms as used by other bindings.

> +
> +required:
> +  - compatible
> +  - reg
> +  - rsense-micro-ohms
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +        status = "okay";
> +        ltc4286@40 {
> +            compatible = "lltc,ltc4286";
> +            reg = <0x40>;
> +            vrange_select_25p6;
> +            rsense-micro-ohms = <300>;
> +        };
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index c6545eb54104..930bdba0f73c 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -12183,6 +12183,15 @@ S:	Maintained
>  F:	Documentation/hwmon/ltc4261.rst
>  F:	drivers/hwmon/ltc4261.c
>  
> +LTC4286 HARDWARE MONITOR DRIVER
> +M:	Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
> +L:	linux-i2c@...r.kernel.org
> +S:	Maintained
> +F:	Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml
> +F:	drivers/hwmon/pmbus/Kconfig
> +F:	drivers/hwmon/pmbus/Makefile
> +F:	drivers/hwmon/pmbus/ltc4286.c
> +
>  LTC4306 I2C MULTIPLEXER DRIVER
>  M:	Michael Hennerich <michael.hennerich@...log.com>
>  L:	linux-i2c@...r.kernel.org
> -- 
> 2.17.1
>