linux-kernel - Re: [PATCH 5/6] irqchip/renesas-rzv2h: Handle ICU error IRQ and add SWPE trigger

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Message-ID: <CA+V-a8vGJeoeDig+7FARuzF=qczFRE4TNMHqtW0ia3wzRWrmQA@mail.gmail.com>
Date: Thu, 22 Jan 2026 09:18:52 +0000
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: Biju Das <biju.das.jz@...renesas.com>
Cc: Thomas Gleixner <tglx@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>, 
	Geert Uytterhoeven <geert+renesas@...der.be>, "magnus.damm" <magnus.damm@...il.com>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, 
	"linux-renesas-soc@...r.kernel.org" <linux-renesas-soc@...r.kernel.org>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH 5/6] irqchip/renesas-rzv2h: Handle ICU error IRQ and add
 SWPE trigger

Hi Biju,

On Thu, Jan 22, 2026 at 8:20 AM Biju Das <biju.das.jz@...renesas.com> wrote:
>
> Hi Prabhakar,
>
> > -----Original Message-----
> > From: Prabhakar <prabhakar.csengg@...il.com>
> > Sent: 21 January 2026 15:02
> > Subject: [PATCH 5/6] irqchip/renesas-rzv2h: Handle ICU error IRQ and add SWPE trigger
> >
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> >
> > Handle the RZ/V2H ICU error interrupt to help diagnose latched bus, ECC RAM, and CA55/IP error
> > conditions during bring-up and debugging.
>
>
> Just a question,
> If the irq handler is meant for debugging/bring-up, can this irq handler activated only for debug session
> instead of unconditionally enabling it?
>
The IRQ handler is registered only when `irq_renesas_rzv2h.debug=1` is
present in the bootargs.

Cheers,
Prabhakar