linux-kernel - Re: [PATCH 1/2] dt-bindings: watchdog: Add NXP Software Watchdog Timer

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Message-ID: <0638eb8c-d87f-44aa-9f1c-eee529b1e1a1@linaro.org>
Date: Mon, 31 Mar 2025 09:57:47 +0200
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>, wim@...ux-watchdog.org
Cc: linux@...ck-us.net, linux-watchdog@...r.kernel.org,
 linux-kernel@...r.kernel.org, S32@....com,
 Ghennadi Procopciuc <ghennadi.procopciuc@....com>,
 Thomas Fossati <thomas.fossati@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>,
 "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
 <devicetree@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt-bindings: watchdog: Add NXP Software Watchdog
 Timer

On 29/03/2025 06:04, Krzysztof Kozlowski wrote:
> On 28/03/2025 16:15, Daniel Lezcano wrote:
>> +description:
>> +  The System Timer Module supports commonly required system and
>> +  application software timing functions. STM includes a 32-bit
>> +  count-up timer and four 32-bit compare channels with a separate
>> +  interrupt source for each channel. The timer is driven by the STM
>> +
>> +allOf:
>> +  - $ref: watchdog.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - nxp,s32g-wdt
> This wasn't tested, so limited review - this also has wrong compatible,
> There is no such soc as s32g in the kernel. If that's a new soc, come
> with proper top-level bindings and some explanation, because I am sure
> previously we talked with NXP that this is not s32g but something else.

If I refer to Documentation/devicetree/bindings/arm/fsl.yaml

We found the entries:

       - description: S32G2 based Boards
         items:
           - enum:
               - nxp,s32g274a-evb
               - nxp,s32g274a-rdb2
           - const: nxp,s32g2

       - description: S32G3 based Boards
         items:
           - enum:
               - nxp,s32g399a-rdb3
           - const: nxp,s32g3

I guess it should nxp,s32g2-wdt and nxp,s32g3-wdt

Right ?


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