Date:   Tue, 30 Nov 2021 18:36:59 +0000
Message-ID: <87bl21mqwk.wl-maz@kernel.org>
From:   Marc Zyngier <maz@kernel.org>
To:     "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Cc:     Rob Herring <robh@kernel.org>,
        Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "kernel-team@android.com" <kernel-team@android.com>,
        John Crispin <john@phrozen.org>, Biwen Li <biwen.li@nxp.com>,
        Chris Brandt <Chris.Brandt@renesas.com>,
        "linux-renesas-soc@vger.kernel.org" 
        <linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH] of/irq: Add a quirk for controllers with their own definition of interrupt-map
In-Reply-To: <CA+V-a8sVS_1hUWJ3uM+VffGyMtdnctBOJTyHTQAoJZGOh0a1Tw@mail.gmail.com>
References: <20211122103032.517923-1-maz@kernel.org>
        <CAMuHMdX2ZRvDYA3idmw3nBcP6CO=2od6ZU-UeJo9vYsuB=fQNQ@mail.gmail.com>
        <8735no70tt.wl-maz@kernel.org>
        <CAMuHMdVS67BLP2XEdD6ZvVBVE2x11gKnQa1TqG659HXPM5scqQ@mail.gmail.com>
        <CAMuHMdWJhnXabKGpW7k944dzQHtwQtxw-yb2bRBsoaMw6N6nuA@mail.gmail.com>
        <87tug3clvc.wl-maz@kernel.org>
        <CAMuHMdWGb2xik+94RVwtq8E6+9eN=HfQLX3a4sTjKQXR96Udkw@mail.gmail.com>
        <87r1b7ck40.wl-maz@kernel.org>
        <OSZPR01MB7019E7DD7119EFF9C994AA62AA649@OSZPR01MB7019.jpnprd01.prod.outlook.com>
        <87tufvmes9.wl-maz@kernel.org>
        <CA+V-a8siHRjF+bJu88QFwz0a_MZ+kiJEwmER58_feyr8O+WNGA@mail.gmail.com>
        <CAL_JsqK+GcnChx3i9fsYnw+FzZgON4PtKB=CzYLUj6sXtxX6fQ@mail.gmail.com>
        <CA+V-a8sVS_1hUWJ3uM+VffGyMtdnctBOJTyHTQAoJZGOh0a1Tw@mail.gmail.com>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue)
 FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1
 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO)
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset=US-ASCII
Precedence: bulk

On Tue, 30 Nov 2021 12:52:21 +0000,
"Lad, Prabhakar" <prabhakar.csengg@gmail.com> wrote:
> 
> On Mon, Nov 29, 2021 at 6:33 PM Rob Herring <robh@kernel.org> wrote:
> >
> > interrupts would work just fine here:
> >
> > interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
> >   <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
> >   <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> >   <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
> >   <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> >   <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
> >   <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
> >   <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
> >
> > We don't need a different solution for N:1 interrupts from N:M. Sure,
> > that could become unweldy if there are a lot of interrupts (just like
> > interrupt-map), but is that an immediate problem?
> >
> It's just that with this approach the driver will have to index the
> interrupts instead of reading from DT.
> 
> Marc - is it OK with the above approach?

Anything that uses standard properties in a standard way works for me.

	M.

-- 
Without deviation from the norm, progress is not possible.