[PATCH v2 9/9] arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC sub board support

[Ayman Chaudhry]

The HiHope RZ/G2M sub board sits below the HiHope RZ/G2M v3.0
(a.k.a. R8A774A3) SoC main board.

The RZ/G2M v3.0 SoC sub board is similar to the RZ/G2M v1.3 SoC sub
board, so there are already DTSI files available in the kernel. These
DTSI files will be included once additional support (e.g. CAN, PCIe
and ethernet) is added for the RZ/G2M v3.0 SoC.

Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@xxxxxxxxxxx>
---
v1->v2:
- Corrected indentation
- Updated licensing to "GPL-2.0-only OR BSD-2-Clause"

 arch/arm64/boot/dts/renesas/Makefile               |  1 +
 .../boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts  | 14 ++++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 9817f3ada6f9..10a138216221 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -9,6 +9,7 @@ dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex-idk-1110wr.dtb
 
 dtb-$(CONFIG_ARCH_R8A774A3) += r8a774a3-hihope-rzg2m.dtb
+dtb-$(CONFIG_ARCH_R8A774A3) += r8a774a3-hihope-rzg2m-ex.dtb
 
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-beacon-rzg2n-kit.dtb
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-hihope-rzg2n.dtb
diff --git a/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts
new file mode 100644
index 000000000000..d346a4009ec8
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+/*
+ * Device Tree Source for the HiHope RZ/G2M v3.0 SoC sub board
+ *
+ * Copyright (C) 2026 Renesas Electronics Corp.
+ */
+
+#include "r8a774a3-hihope-rzg2m.dts"
+
+/ {
+	model = "HopeRun HiHope RZ/G2M v3.0 with sub board";
+	compatible = "hoperun,hihope-rzg2-ex", "hoperun,hihope-rzg2m",
+		     "renesas,r8a774a3";
+};
-- 
2.34.1