linux-kernel - Re: [PATCH v6 00/10] Add support for RaspberryPi RP1 PCI device using a DT overlay

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Message-ID: <821d4c74-09b0-4c1b-b8ef-f8c08d0f6b5b@lunn.ch>
Date: Thu, 13 Feb 2025 18:45:31 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Phil Elwell <phil@...pberrypi.com>
Cc: Herve Codina <herve.codina@...tlin.com>,
	Andrea della Porta <andrea.porta@...e.com>,
	Arnd Bergmann <arnd@...db.de>,
	"maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" <bcm-kernel-feedback-list@...adcom.com>,
	bhelgaas@...gle.com, brgl@...ev.pl,
	Catalin Marinas <catalin.marinas@....com>,
	Conor Dooley <conor+dt@...nel.org>, derek.kiernan@....com,
	devicetree@...r.kernel.org, dragan.cvetic@....com,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, krzk+dt@...nel.org,
	kw@...ux.com, Linus Walleij <linus.walleij@...aro.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-clk@...r.kernel.org, linux-gpio@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	"open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS" <linux-pci@...r.kernel.org>,
	"moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" <linux-rpi-kernel@...ts.infradead.org>,
	lpieralisi@...nel.org, luca.ceresoli@...tlin.com,
	manivannan.sadhasivam@...aro.org, masahiroy@...nel.org,
	Michael Turquette <mturquette@...libre.com>,
	Rob Herring <robh@...nel.org>, saravanak@...gle.com,
	Stephen Boyd <sboyd@...nel.org>, thomas.petazzoni@...tlin.com,
	Stefan Wahren <wahrenst@....net>, Will Deacon <will@...nel.org>,
	Dave Stevenson <dave.stevenson@...pberrypi.com>
Subject: Re: [PATCH v6 00/10] Add support for RaspberryPi RP1 PCI device
 using a DT overlay

> > Or do you mean a custom board, which has a CPU, RP1 and the button and
> > fan are directly on this custom board? You then want a board DTS which
> > includes all these pieces?
> 
> That depends on whether you count the Raspberry Pi 5 as a custom board.

So you mean the Pi 5 board would itself make use of the resources the
RP1 device has? They are not simply connected to headers for plugin
boards, but used by the main board? Hence you want to describe them in
the board .DTS file.

	Andrew