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

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Message-ID:
 <TY3PR01MB11346D2377E6F3D5B9B60B3F28697A@TY3PR01MB11346.jpnprd01.prod.outlook.com>
Date: Thu, 22 Jan 2026 09:26:00 +0000
From: Biju Das <biju.das.jz@...renesas.com>
To: "Lad, Prabhakar" <prabhakar.csengg@...il.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 Prabhakar,

> -----Original Message-----
> From: Lad, Prabhakar <prabhakar.csengg@...il.com>
> Sent: 22 January 2026 09:19
> 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.

Thanks for clarification.

Cheers,
Biju