linux-kernel - Re: [PATCH v1 1/2] dt-bindings: hwmon: Add Eswin EIC7700 PVT sensor

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Message-ID: <20260111-messy-raven-of-efficiency-fbce9f@quoll>
Date: Sun, 11 Jan 2026 11:30:48 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: hehuan1@...incomputing.com
Cc: linux@...ck-us.net, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, p.zabel@...gutronix.de, ningyu@...incomputing.com, 
	linmin@...incomputing.com, pinkesh.vaghela@...fochips.com, luyulin@...incomputing.com, 
	weishangjuan@...incomputing.com
Subject: Re: [PATCH v1 1/2] dt-bindings: hwmon: Add Eswin EIC7700 PVT sensor

On Fri, Jan 09, 2026 at 05:08:36PM +0800, hehuan1@...incomputing.com wrote:
> From: Huan He <hehuan1@...incomputing.com>
> 
> Add device tree binding documentation for ESWIN EIC7700 Process, Voltage
> and Temperature sensor.
> 
> The EIC7700 SoC integrates two PVT instances for monitoring SoC and DDR
> power domains respectively.
> 
> Signed-off-by: Yulin Lu <luyulin@...incomputing.com>
> Signed-off-by: Huan He <hehuan1@...incomputing.com>
> ---
>  .../bindings/hwmon/eswin,eic7700-pvt.yaml     | 92 +++++++++++++++++++
>  1 file changed, 92 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/eswin,eic7700-pvt.yaml
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/eswin,eic7700-pvt.yaml b/Documentation/devicetree/bindings/hwmon/eswin,eic7700-pvt.yaml
> new file mode 100644
> index 000000000000..72693828a461
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/eswin,eic7700-pvt.yaml
> @@ -0,0 +1,92 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hwmon/eswin,eic7700-pvt.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ESWIN EIC7700 PVT Sensor
> +
> +maintainers:
> +  - Yulin Lu <luyulin@...incomputing.com>
> +  - Huan He <hehuan1@...incomputing.com>
> +
> +description:
> +  ESWIN EIC7700 SoC integrates embedded process, voltage and temperature
> +  sensors to monitor the internal SoC environment. The system includes two
> +  PVT sensor instances. The PVT0 monitors the main SoC power domain. The
> +  PVT1 sensor monitors the DDR core power domain.
> +

You miss ref to hwmon-common

> +properties:
> +  compatible:
> +    const: eswin,eic7700-pvt
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    items:
> +      - const: clk

Drop clock-names, useless. There is little sense in calling a clock
"clock".

> +
> +  interrupts:
> +    maxItems: 1
> +
> +  label:
> +    description:
> +      Human readable identifier used to distinguish between different PVT
> +      instances and generate descriptive sensor labels. Typically "pvt0"
> +      for SoC PVT sensor and "pvt1" for DDR core PVT sensor.
> +
> +  resets:
> +    maxItems: 1
> +
> +  reset-names:
> +    items:
> +      - const: rst

Same problem.


> +
> +  '#thermal-sensor-cells':
> +    description: Thermal sensor cells if used for thermal sensoring.
> +    const: 0
> +
> +additionalProperties: false

This goes after required block.

> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - interrupts
> +  - label
> +  - resets
> +  - reset-names
> +
> +examples:
> +  - |
> +    pvt@...00000 {
> +      compatible = "eswin,eic7700-pvt";
> +      reg = <0x50b00000 0x10000>;
> +      clocks = <&clocks 244>;
> +      clock-names = "clk";
> +      interrupts = <349>;
> +      interrupt-parent = <&plic>;
> +      label = "pvt0";
> +      resets = <&reset 111>;
> +      reset-names = "rst";
> +      #thermal-sensor-cells = <0>;
> +    };
> +
> +    pvt@...60000 {
> +      compatible = "eswin,eic7700-pvt";

Drop entire node, one example is enough. Do not grow your binding with
redundant data. We are not accepting commits based on number of lines.

Best regards,
Krzysztof