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Message-ID: <20240610213735.GA3112053-robh@kernel.org>
Date: Mon, 10 Jun 2024 15:37:35 -0600
From: Rob Herring <robh@...nel.org>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: Herve Codina <herve.codina@...tlin.com>,
	Simon Horman <horms@...nel.org>,
	Sai Krishna Gajula <saikrishnag@...vell.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Lee Jones <lee@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Horatiu Vultur <horatiu.vultur@...rochip.com>,
	UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Saravana Kannan <saravanak@...gle.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Lars Povlsen <lars.povlsen@...rochip.com>,
	Steen Hegelund <Steen.Hegelund@...rochip.com>,
	Daniel Machon <daniel.machon@...rochip.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	netdev@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Allan Nielsen <allan.nielsen@...rochip.com>,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v2 17/19] PCI: of_property: Add interrupt-controller
 property in PCI device nodes

On Thu, Jun 06, 2024 at 02:26:12PM -0500, Bjorn Helgaas wrote:
> On Mon, May 27, 2024 at 06:14:44PM +0200, Herve Codina wrote:
> > PCI devices and bridges DT nodes created during the PCI scan are created
> > with the interrupt-map property set to handle interrupts.
> > 
> > In order to set this interrupt-map property at a specific level, a
> > phandle to the parent interrupt controller is needed. On systems that
> > are not fully described by a device-tree, the parent interrupt
> > controller may be unavailable (i.e. not described by the device-tree).
> > 
> > As mentioned in the [1], avoiding the use of the interrupt-map property
> > and considering a PCI device as an interrupt controller itself avoid the
> > use of a parent interrupt phandle.
> > 
> > In that case, the PCI device itself as an interrupt controller is
> > responsible for routing the interrupts described in the device-tree
> > world (DT overlay) to the PCI interrupts.
> > 
> > Add the 'interrupt-controller' property in the PCI device DT node.
> > 
> > [1]: https://lore.kernel.org/lkml/CAL_Jsq+je7+9ATR=B6jXHjEJHjn24vQFs4Tvi9=vhDeK9n42Aw@mail.gmail.com/
> > 
> > Signed-off-by: Herve Codina <herve.codina@...tlin.com>
> 
> No objection from me, but I'd like an ack/review from Rob.

Given it is more DT patches in the series, how about I take them and 
this one with your ack instead?

Rob

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