linux-kernel - Re: [PATCH 2/2] dt-bindings: regulator: pca9450: add restart handler priority

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Date: Mon, 22 Apr 2024 10:24:45 +0200
From: Holger Assmann <h.assmann@...gutronix.de>
To: Krzysztof Kozlowski <krzk@...nel.org>, lgirdwood@...il.com,
 broonie@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, yibin.gong@....com
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: Re: [PATCH 2/2] dt-bindings: regulator: pca9450: add restart handler
 priority

Hello Krzysztof,

also thanks for the feedback on this one.

Am 19.04.24 um 15:39 schrieb Krzysztof Kozlowski:
> 
> Please use subject prefixes matching the subsystem. You can get them for
> example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
> your patch is touching.

Short note: I did that prior submitting, but I did it directly for the
yaml-file and not for the directory - Those do not look the same
regarding their prefix scheme.

I will change it for my v2 and use a subject like for the directory.


> 
>> ---
>>  .../devicetree/bindings/regulator/nxp,pca9450-regulator.yaml   | 3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml b/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml
>> index 3d469b8e97748..7cc2d6636cf52 100644
>> --- a/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml
>> +++ b/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml
>> @@ -35,6 +35,9 @@ properties:
>>    interrupts:
>>      maxItems: 1
>>  
>> +  priority:
>> +    $ref: /schemas/power/reset/restart-handler.yaml#
> 
> You defined object, which is not explained in commit msg. This code does
> not look correct or it does not implement what you said.
> 
> Please look at existing code - do you see anything like this? No, there
> is no such code and this should raise question.

I am a bit lost on that one to be honest.

The only other instances where a "priority" for restart handling is
described are "gpio-poweroff.yaml" and "syscon-reboot.yaml". These files
are dedicated documentation for the reset bindings, so I tried to
transfer the respective entry over for my commit.

Do you suggest I should replace

+  priority:
+    $ref: /schemas/power/reset/restart-handler.yaml#

with

+allOf:
+  - $ref: /schemas/power/reset/restart-handler.yaml#

in order to properly include the context for the restart handling?
Running dt_binding_check does not indicate an issue with any of those two.


> 
> You probably want to annotate that device is a restart handler?

You mean by adding to the "description" part of the file?


Kind regards,
Holger

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