linux-kernel - Re: [PATCH v4 8/8] ARM: dts: r9a06g032: Add support for GPIO interrupts

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Message-ID: <aNRnOFTvaThW-CJE@shikoro>
Date: Wed, 24 Sep 2025 23:48:40 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: "Herve Codina (Schneider Electric)" <herve.codina@...tlin.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 v4 8/8] ARM: dts: r9a06g032: Add support for GPIO
 interrupts


> +			/*
> +			 * interrupt-map has to be updated according to GPIO
> +			 * usage. The src irq (0 field) has to be updated with
> +			 * the needed GPIO interrupt number.
> +			 * More items can be added (up to 8). Those items must
> +			 * define one GIC interrupt line among 103 to 110.
> +			 */
> +			interrupt-map = <0 &gic GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;

Okay, so my main concern here was that we setup some "random" default
mapping for each board. Which is not true because this node is disabled
by default. So, maybe we could rephrase the paragraph like

/*
 * Example mapping entry. Board DTs need to overwrite 'interrupt-map'
 * with their specific mapping. Check the irqmux binding documentation
 * for details.
 */

? I will see if I can provide a useful board addition for the DB400
boards...


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