From: Paul Barker <paul.barker.ct@bp.renesas.com>

The RZ/T2H EVK and RZ/N2H EVK are very similar boards. As there is so
much overlap between these parts, common device tree entries are moved
to the new file rzt2h-evk-common.dtsi.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v1->v2:
- Renamed the file to `rzt2h-n2h-evk-common.dtsi` to better reflect its
  purpose.
---
 .../dts/renesas/r9a09g077m44-rzt2h-evk.dts    | 17 +------------
 .../dts/renesas/rzt2h-n2h-evk-common.dtsi     | 24 +++++++++++++++++++
 2 files changed, 25 insertions(+), 16 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi

diff --git a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
index 752d4c9f2cae..486584fefead 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
@@ -8,24 +8,9 @@
 /dts-v1/;
 
 #include "r9a09g077m44.dtsi"
+#include "rzt2h-n2h-evk-common.dtsi"
 
 / {
 	model = "Renesas RZ/T2H EVK Board based on r9a09g077m44";
 	compatible = "renesas,rzt2h-evk", "renesas,r9a09g077m44", "renesas,r9a09g077";
-
-	aliases {
-		serial0 = &sci0;
-	};
-
-	chosen {
-		stdout-path = "serial0:115200n8";
-	};
-};
-
-&extal_clk {
-	clock-frequency = <25000000>;
-};
-
-&sci0 {
-	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
new file mode 100644
index 000000000000..5f17996bcd6b
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Common Device Tree Source for the RZ/T2H and RZ/N2H EVK boards.
+ *
+ * Copyright (C) 2025 Renesas Electronics Corp.
+ */
+
+/ {
+	aliases {
+		serial0 = &sci0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&extal_clk {
+	clock-frequency = <25000000>;
+};
+
+&sci0 {
+	status = "okay";
+};
-- 
2.49.0

On Tue, 17 Jun 2025 at 19:20, Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Paul Barker <paul.barker.ct@bp.renesas.com>
>
> The RZ/T2H EVK and RZ/N2H EVK are very similar boards. As there is so
> much overlap between these parts, common device tree entries are moved
> to the new file rzt2h-evk-common.dtsi.
>
> Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
> v1->v2:
> - Renamed the file to `rzt2h-n2h-evk-common.dtsi` to better reflect its
>   purpose.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds