linux-kernel - Re: [PATCH v3 8/8] ARM: dts: r9a06g032: Add support for GPIO interrupts

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Message-ID: <20250919191211.0ed4c976@bootlin.com>
Date: Fri, 19 Sep 2025 19:12:11 +0200
From: Herve Codina <herve.codina@...tlin.com>
To: Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Hoan Tran
 <hoan@...amperecomputing.com>, Linus Walleij <linus.walleij@...aro.org>,
 Bartosz Golaszewski <brgl@...ev.pl>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Geert Uytterhoeven <geert+renesas@...der.be>, Magnus
 Damm <magnus.damm@...il.com>, Saravana Kannan <saravanak@...gle.com>, Serge
 Semin <fancer.lancer@...il.com>, Phil Edworthy <phil.edworthy@...esas.com>,
 linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org, Pascal
 Eberhard <pascal.eberhard@...com>, Miquel Raynal
 <miquel.raynal@...tlin.com>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v3 8/8] ARM: dts: r9a06g032: Add support for GPIO
 interrupts

On Fri, 19 Sep 2025 16:41:05 +0200
Wolfram Sang <wsa+renesas@...g-engineering.com> wrote:

> > 'interrupt-map' is a required property. If the board doesn't use any interrupt
> > GPIO, its dts has no reason to set the interrupt-map.  
> 
> Why is 'interrupt-map' then a required property? Can we drop it from the
> requirements?
> 

I need to check in details but 'interrupt-map' should be kept required.
Indeed, irq-mux needs this property to work. It is not an optional one.

I need to look at the 'make CHECK_DTBS=y' behavior when required property is
missing in a not enabled node (node with status = "disabled").

Also, got some:
   Warning (interrupts_property): /soc/interrupt-controller@...00480: Missing interrupt-controller or interrupt-map property

This could be due to the presence of #interrupt-cells or the node name (not
sure). As I need to rename the node (Conor's comment), I will see if the
warning disappear. If the warning is due to #interrupt-cells, I don't think
that removing #interrupt-cells is the right solution to avoid the warning.

That's said, I need to perform some local tries. I will keep you informed.

Best regards
Hervé