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From: Marc Zyngier <marc.zyngier@arm.com>
To: Rob Herring <robh@kernel.org>,
	Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Jason Cooper <jason@lakedaemon.net>,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	Pawel Moll <pawel.moll@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Kumar Gala <galak@codeaurora.org>, Andrew Lunn <andrew@lunn.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Gregory Clement <gregory.clement@free-electrons.com>,
	Nadav Haklai <nadavh@marvell.com>,
	Hanna Hawa <hannah@marvell.com>,
	Yehuda Yitschak <yehuday@marvell.com>,
	Antoine Tenart <antoine.tenart@free-electrons.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/6] dt-bindings: interrupt-controller: add DT binding for the Marvell GICP
Date: Thu, 8 Jun 2017 13:07:59 +0100	[thread overview]
Message-ID: <aee1c1d9-eb59-b17f-27b8-e0529d69945f@arm.com> (raw)
In-Reply-To: <20170607222420.perbnsnmizhyl42f@rob-hp-laptop>

On 07/06/17 23:24, Rob Herring wrote:
> On Fri, Jun 02, 2017 at 12:06:52PM +0200, Thomas Petazzoni wrote:
>> This commit adds the Device Tree binding documentation for the Marvell
>> GICP, an extension to the GIC that allows to trigger GIC SPI interrupts
>> using memory transactions. It is used by the ICU unit in the Marvell
>> CP110 block to turn wired interrupts inside the CP into SPI interrupts
>> at the GIC level in the AP.
> 
> Sounds like an MSI block?

Almost. It also allows to deal with level interrupts, which a classic
MSI controller cannot manage. This looks like it has been lifted from
the GICv3 spec, which offers the exact same mechanism for SPIs.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

  reply	other threads:[~2017-06-08 12:08 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-02 10:06 [PATCH v2 0/6] Add support for the ICU unit in Marvell Armada 7K/8K Thomas Petazzoni
2017-06-02 10:06 ` [PATCH v2 1/6] dt-bindings: interrupt-controller: add DT binding for the Marvell GICP Thomas Petazzoni
2017-06-07 22:24   ` Rob Herring
2017-06-08 12:07     ` Marc Zyngier [this message]
2017-06-08 12:10     ` Thomas Petazzoni
2017-06-08 21:53       ` Rob Herring
2017-06-02 10:06 ` [PATCH v2 2/6] dt-bindings: interrupt-controller: add DT binding for the Marvell ICU Thomas Petazzoni
2017-06-07 22:33   ` Rob Herring
2017-06-08 12:12     ` Thomas Petazzoni
2017-06-08 21:56       ` Rob Herring
2017-06-02 10:06 ` [PATCH v2 3/6] irqchip: irq-mvebu-gicp: new driver for Marvell GICP Thomas Petazzoni
2017-06-08 15:07   ` Marc Zyngier
2017-06-02 10:06 ` [PATCH v2 4/6] irqchip: irq-mvebu-icu: new driver for Marvell ICU Thomas Petazzoni
2017-06-02 10:06 ` [PATCH v2 5/6] arm64: marvell: enable ICU and GICP drivers Thomas Petazzoni
2017-06-02 10:06 ` [PATCH v2 6/6] arm64: dts: marvell: enable GICP and ICU on Armada 7K/8K Thomas Petazzoni
2017-06-06 16:28 ` [PATCH v2 0/6] Add support for the ICU unit in Marvell " Gregory CLEMENT

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