linux-kernel - Re: [PATCH v6 1/2] dt-bindings: hwmon: Add Sophgo SG2042 external hardware monitor support

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Message-ID: <5a2e23f4-d54a-45ae-a09d-e557b110e017@roeck-us.net>
Date: Sat, 6 Jul 2024 09:48:58 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Inochi Amaoto <inochiama@...look.com>
Cc: Jean Delvare <jdelvare@...e.com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Jonathan Corbet <corbet@....net>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, linux-hwmon@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-riscv@...ts.infradead.org,
	Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v6 1/2] dt-bindings: hwmon: Add Sophgo SG2042 external
 hardware monitor support

On Wed, Jul 03, 2024 at 10:30:43AM +0800, Inochi Amaoto wrote:
> Due to the design, Sophgo SG2042 use an external MCU to provide
> hardware information, thermal information and reset control.
> 
> Add bindings for this monitor device.
> 
> Signed-off-by: Inochi Amaoto <inochiama@...look.com>
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>  .../hwmon/sophgo,sg2042-hwmon-mcu.yaml        | 43 +++++++++++++++++++
>  1 file changed, 43 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/sophgo,sg2042-hwmon-mcu.yaml
> 
> --
> 2.45.2
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/sophgo,sg2042-hwmon-mcu.yaml b/Documentation/devicetree/bindings/hwmon/sophgo,sg2042-hwmon-mcu.yaml
> new file mode 100644
> index 000000000000..f0667ac41d75
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/sophgo,sg2042-hwmon-mcu.yaml
> @@ -0,0 +1,43 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hwmon/sophgo,sg2042-hwmon-mcu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sophgo SG2042 onboard MCU support
> +
> +maintainers:
> +  - Inochi Amaoto <inochiama@...look.com>
> +
> +properties:
> +  compatible:
> +    const: sophgo,sg2042-hwmon-mcu

According to the other patch, this actually covers four
distinct models/devices.

static const struct sg2042_mcu_board_data sg2042_boards_data[] = {
> +	{
> +		.id = 0x80,
> +		.name = "SG2042 evb x8",
> +	},
> +	{
> +		.id = 0x81,
> +		.name = "SG2042R evb",
> +	},
> +	{
> +		.id = 0x83,
> +		.name = "SG2042 evb x4",
> +	},
> +	{
> +		.id = 0x90,
> +		.name = "Milk-V Pioneer",
> +	},
> +};
> +

Is it really appropriate to use a single compatible property for all of those ?

Guenter