linux-kernel - Re: [PATCH 1/2] dt-bindings: thermal: convert st,stih407-thermal to DT schema

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Date: Fri, 1 Mar 2024 17:55:56 +0100
From: Raphaël Gallais-Pou <rgallaispou@...il.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>,
 Lukasz Luba <lukasz.luba@....com>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Patrice Chotard <patrice.chotard@...s.st.com>, Lee Jones <lee@...nel.org>
Cc: linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] dt-bindings: thermal: convert st,stih407-thermal to
 DT schema

Hi Krzysztof,

Le 29/02/2024 à 20:15, Krzysztof Kozlowski a écrit :
> On 26/02/2024 08:48, Raphael Gallais-Pou wrote:
>> Converts st,stih407-thermal binding to DT schema format and cleans
> 
> Please use imperative for your future patches.
> https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95
> 
>> unused property "st,passive_cooling_temp" which does not appear in the
>> device-tree.
>>
>> Signed-off-by: Raphael Gallais-Pou <rgallaispou@...il.com>
>> ---
>>   .../bindings/thermal/st,stih407-thermal.yaml       | 61 ++++++++++++++++++++++
>>   .../devicetree/bindings/thermal/st-thermal.txt     | 32 ------------
>>   2 files changed, 61 insertions(+), 32 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/thermal/st,stih407-thermal.yaml b/Documentation/devicetree/bindings/thermal/st,stih407-thermal.yaml
>> new file mode 100644
>> index 000000000000..807f8d77edf5
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/thermal/st,stih407-thermal.yaml
>> @@ -0,0 +1,61 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/thermal/st,stih407-thermal.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: STMicroelectronics STi digital thermal sensor (DTS)
>> +
>> +maintainers:
>> +  - Patrice Chotard <patrice.chotard@...s.st.com>
>> +  - Lee Jones <lee@...nel.org>
>> +
>> +description:
>> +  Binding for Thermal Sensor device for STMicroelectronics STi SoCs series.
> 
> Drop "Binding for" and describe the hardware. If you repeat the title,
> then the description is not really needed.
> 
>> +
>> +allOf:
>> +  - $ref: thermal-sensor.yaml
>> +
>> +properties:
>> +  compatible:
>> +    const: st,stih407-thermal
>> +
>> +  clocks:
>> +    maxItems: 1
>> +    description: Phandle of the clock used by the thermal sensor.
> 
> Drop description, it's obvious.
> 
>> +
>> +  clock-names:
>> +    items:
>> +      - const: thermal
>> +
>> +  reg:
>> +    description:
>> +      For non-sysconf based sensors, this should be the physical base
>> +      address and length of the sensor's registers.
> 
> That's odd, probably old binding was incomplete. You have only one
> device described here, so I expect this to be always present (thus
> description is obvious).

It is indeed missing in the old file.
> 
>> +
>> +  interrupts:
>> +    description: |
> 
> Do not need '|' unless you need to preserve formatting.
> 
>> +      Standard way to define interrupt number.
> 
> ???
> 
>> +      For thermal sensor's for which no interrupt has been
>> +      defined, a polling delay of 1000ms will be used to read the
>> +      temperature from device.
> 
> Missing thermal-sensor-cells.
> 
>> +
>> +required:
>> +  - compatible
>> +  - clocks
>> +  - clock-names
> 
> Missing reg and please mention the change from pure conversion in commit
> msg.
> 
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    temp0@...0000 {
> 
> Node names should be generic. See also an explanation and list of
> examples (not exhaustive) in DT specification:
> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> 
> 
>> +        compatible = "st,stih407-thermal";
>> +        reg = <0x91a0000 0x28>;
>> +        clock-names = "thermal";
>> +        clocks = <&CLK_SYSIN>;
>> +        interrupts = <GIC_SPI 205 IRQ_TYPE_EDGE_RISING>;
>> +        #thermal-sensor-cells = <0>;
>> +    };
> 
> 
> 
Thanks for your review. I will send a v2 with the changes your mentioned 
above.

Regards,
Raphaël

> Best regards,
> Krzysztof
>