netdev - Re: [PATCH 08/11] misc: rp1: RaspberryPi RP1 misc driver

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Message-ID: <ZtWGiXUsWZOVAXRv@apocalypse>
Date: Mon, 2 Sep 2024 11:34:01 +0200
From: Andrea della Porta <andrea.porta@...e.com>
To: Rob Herring <robh@...nel.org>
Cc: Stefan Wahren <wahrenst@....net>,
	Andrea della Porta <andrea.porta@...e.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Derek Kiernan <derek.kiernan@....com>,
	Dragan Cvetic <dragan.cvetic@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Claudiu Beznea <claudiu.beznea@...on.dev>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Saravana Kannan <saravanak@...gle.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>, linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org, netdev@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-arch@...r.kernel.org,
	Lee Jones <lee@...nel.org>, Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH 08/11] misc: rp1: RaspberryPi RP1 misc driver

Hi Rob,

On 13:27 Fri 30 Aug     , Rob Herring wrote:
> On Fri, Aug 23, 2024 at 11:31 AM Andrea della Porta
> <andrea.porta@...e.com> wrote:
> >
...
> >
> > Since u-boot is lacking support for RP1 we cannot really produce some test
> > results to check the compatibility versus kernel dtb overlay but we can
> > speculate a little bit about it. AFAIK u-boot would probably place the rp1
> > node directly under its pcie@...00 node in DT while the dtb overlay will use
> > dynamically created PCI endpoint node (dev@0) as parent for rp1 node.
> 
> u-boot could do that and it would not be following the 25+ year old
> PCI bus bindings. Some things may be argued about as "Linux bindings",
> but that isn't one of them.

Indeed. It was just speculation, not something I would bet on.

Regards,
Andrea

> 
> Rob