Define the RP1 node in an overlay. The inclusion tree is
as follow (the arrow points to the includer):

                      rp1.dtso
                          ^
                          |
rp1-common.dtsi ----> rp1-nexus.dtsi

Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
---
 arch/arm64/boot/dts/broadcom/Makefile |  3 ++-
 arch/arm64/boot/dts/broadcom/rp1.dtso | 11 +++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/broadcom/rp1.dtso

diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
index 031875a277d7..83d45afc6588 100644
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile

@@ -14,7 +14,8 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb \
 			      bcm2837-rpi-3-b.dtb \
 			      bcm2837-rpi-3-b-plus.dtb \
 			      bcm2837-rpi-cm3-io3.dtb \
-			      bcm2837-rpi-zero-2-w.dtb
+			      bcm2837-rpi-zero-2-w.dtb \
+			      rp1.dtbo
 
 subdir-y	+= bcmbca
 subdir-y	+= northstar2

diff --git a/arch/arm64/boot/dts/broadcom/rp1.dtso b/arch/arm64/boot/dts/broadcom/rp1.dtso
new file mode 100644
index 000000000000..ab4f146d22c0
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/rp1.dtso

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+/dts-v1/;
+/plugin/;
+
+&pcie2 {
+	#address-cells = <3>;
+	#size-cells = <2>;
+
+	#include "rp1-nexus.dtsi"
+};

-- 
2.35.3