linux-kernel - [PATCH v8 09/13] arm64: dts: Add board DTS for Rpi5 which includes RP1 node

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Message-ID: <c6498d8cf8dfade1980b566e99a9a91551fd8b53.1742418429.git.andrea.porta@suse.com>
Date: Wed, 19 Mar 2025 22:52:30 +0100
From: Andrea della Porta <andrea.porta@...e.com>
To: Andrea della Porta <andrea.porta@...e.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh@...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>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczynski <kw@...ux.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Derek Kiernan <derek.kiernan@....com>,
	Dragan Cvetic <dragan.cvetic@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Saravana Kannan <saravanak@...gle.com>,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Stefan Wahren <wahrenst@....net>,
	Herve Codina <herve.codina@...tlin.com>,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Andrew Lunn <andrew@...n.ch>,
	Phil Elwell <phil@...pberrypi.com>,
	Dave Stevenson <dave.stevenson@...pberrypi.com>,
	kernel-list@...pberrypi.com
Subject: [PATCH v8 09/13] arm64: dts: Add board DTS for Rpi5 which includes RP1 node

Add the board 'monolithic' DTS for RaspberryPi 5 which includes
the RP1 node definition.  The inclusion treeis as follow (the
arrow points to the includer):

rp1-common.dtsi ----> rp1-nexus.dtsi ----> bcm2712-rpi-5-b-monolithic.dts
                                               ^
                                               |
                                           bcm2712-rpi-5-b.dts

This is designed to maximize the compatibility with downstream DT
while ensuring that a fully defined DT (one which includes the RP1
node as opposed to load it from overlay at runtime) is present
since early boot stage.

Signed-off-by: Andrea della Porta <andrea.porta@...e.com>
---
Right now bcm2712-rpi-5-b.dts is the overlay-ready DT which will make
the RP1 driver to load the RP1 dtb overlay at runtime, while
bcm2712-rpi-5-b-monolithic.dts is the fully defined one (i.e. it
already contains RP1 node, so no overlay is loaded nor needed). 
Depending on which one we want to be considered the default, we can
swap the file names to align with downstream naming convention that
has only the fully defined DT called bcm2712-rpi-5-b.dts.
---
 arch/arm64/boot/dts/broadcom/Makefile                     | 1 +
 .../boot/dts/broadcom/bcm2712-rpi-5-b-monolithic.dts      | 8 ++++++++
 2 files changed, 9 insertions(+)
 create mode 100644 arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-monolithic.dts

diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
index 3d0efb93b06d..4836c6da5bee 100644
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb \
 			      bcm2711-rpi-4-b.dtb \
 			      bcm2711-rpi-cm4-io.dtb \
 			      bcm2712-rpi-5-b.dtb \
+			      bcm2712-rpi-5-b-monolithic.dtb \
 			      bcm2712-d-rpi-5-b.dtb \
 			      bcm2837-rpi-3-a-plus.dtb \
 			      bcm2837-rpi-3-b.dtb \
diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-monolithic.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-monolithic.dts
new file mode 100644
index 000000000000..3aeee678b0bc
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-monolithic.dts
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/dts-v1/;
+
+#include "bcm2712-rpi-5-b.dts"
+
+&pcie2 {
+	#include "rp1-nexus.dtsi"
+};
-- 
2.35.3