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From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
To: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <brgl@bgdev.pl>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@vger.kernel.org>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Biju Das <biju.das.jz@bp.renesas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: Re: [PATCH v7 0/5] Renesas RZ/G2L IRQC support
Date: Thu, 7 Jul 2022 18:51:37 +0100	[thread overview]
Message-ID: <CA+V-a8tKOEcBD=X4=8S=jtw53ypfnckv-4+h7Dd4R969QNNeww@mail.gmail.com> (raw)
In-Reply-To: <87h73un2pv.wl-maz@kernel.org>

Hi Marc,

On Wed, Jul 6, 2022 at 8:02 AM Marc Zyngier <maz@kernel.org> wrote:
>
> On Sun, 03 Jul 2022 20:40:15 +0100,
> Lad Prabhakar <prabhakar.csengg@gmail.com> wrote:
> >
> > Hi All,
> >
> > The RZ/G2L Interrupt Controller is a front-end for the GIC found on
> > Renesas RZ/G2L SoC's with below pins:
> > - IRQ sense select for 8 external interrupts, mapped to 8 GIC SPI
> >   interrupts
> > - GPIO pins used as external interrupt input pins out of GPIOINT0-122 a
> >   maximum of only 32 can be mapped to 32 GIC SPI interrupts,
> > - NMI edge select.
> >
> >                                                              _____________
> >                                                              |    GIC     |
> >                                                              |  ________  |
> >                                       ____________           | |        | |
> > NMI --------------------------------->|          |  SPI0-479 | | GIC-600| |
> >              _______                  |          |------------>|        | |
> >              |      |                 |          |  PPI16-31 | |        | |
> >              |      | IRQ0-IRQ7       |   IRQC   |------------>|        | |
> > P0_P48_4 --->| GPIO |---------------->|          |           | |________| |
> >              |      |GPIOINT0-122     |          |           |            |
> >              |      |---------------->| TINT0-31 |           |            |
> >              |______|                 |__________|           |____________|
> >
> > The proposed patches add hierarchical IRQ domain, one in IRQC driver and
> > another in pinctrl driver. Upon interrupt requests map the interrupt to
> > GIC. Out of GPIOINT0-122 only 32 can be mapped to GIC SPI, this mapping is
> > handled by the pinctrl and IRQC driver.
> >
> > Cheers,
> > Prabhakar
> >
> > v6->v7:
> > * Used devm_reset_control_get_exclusive() instead of
> >   devm_reset_control_get_exclusive_by_index()
> > * Included RB tag from Linus for patch 5/5
> > * Switched to newer version of populate_parent_alloc_arg() (patch depends
> >   on https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/
> >   patch/?id=178b7e21459e9a7e2a2c369711ef0cc9b1cfbcd7)
>
> Please add this patch as part of the series.
>
Sure will do.

Cheers,
Prabhakar

      reply	other threads:[~2022-07-07 17:52 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-03 19:40 [PATCH v7 0/5] Renesas RZ/G2L IRQC support Lad Prabhakar
2022-07-03 19:40 ` [PATCH v7 1/5] dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller Lad Prabhakar
2022-07-04  8:44   ` Geert Uytterhoeven
2022-07-04 11:35     ` Lad, Prabhakar
2022-07-03 19:40 ` [PATCH v7 2/5] irqchip: Add RZ/G2L IA55 Interrupt Controller driver Lad Prabhakar
2022-07-04  9:19   ` Philipp Zabel
2022-07-04 11:38     ` Lad, Prabhakar
2022-07-03 19:40 ` [PATCH v7 3/5] gpio: gpiolib: Allow free() callback to be overridden Lad Prabhakar
2022-07-04 16:15   ` Andy Shevchenko
2022-07-05  4:53     ` Lad, Prabhakar
2022-07-06  7:01       ` Marc Zyngier
2022-07-07 17:51         ` Lad, Prabhakar
2022-07-03 19:40 ` [PATCH v7 4/5] dt-bindings: pinctrl: renesas,rzg2l-pinctrl: Document the properties to handle GPIO IRQ Lad Prabhakar
2022-07-03 19:40 ` [PATCH v7 5/5] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt Lad Prabhakar
2022-07-06  7:02 ` [PATCH v7 0/5] Renesas RZ/G2L IRQC support Marc Zyngier
2022-07-07 17:51   ` Lad, Prabhakar [this message]

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