linux-kernel - [PATCH 19/19] arm64: dts: renesas: renesas-smarc2: Enable rsci{2,4,9} nodes

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Message-ID: <20251027154615.115759-20-biju.das.jz@bp.renesas.com>
Date: Mon, 27 Oct 2025 15:46:06 +0000
From: Biju Das <biju.das.jz@...renesas.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
	Biju Das <biju.das.au@...il.com>
Subject: [PATCH 19/19] arm64: dts: renesas: renesas-smarc2: Enable rsci{2,4,9} nodes

Enable device rsci{2,4,9} nodes for the RZ SMARC Carrier-II Board.

Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
---
 .../boot/dts/renesas/r9a09g047e57-smarc.dts   | 40 +++++++++++++++++++
 .../boot/dts/renesas/renesas-smarc2.dtsi      | 12 ++++++
 2 files changed, 52 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
index 12cd488f5dfa..301eb6d47861 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
@@ -38,6 +38,9 @@ / {
 
 	aliases {
 		i2c0 = &i2c0;
+		serial0 = &rsci4;
+		serial1 = &rsci9;
+		serial2 = &rsci2;
 		serial3 = &scif0;
 		mmc1 = &sdhi1;
 	};
@@ -141,6 +144,26 @@ nmi_pins: nmi {
 		input-schmitt-enable;
 	};
 
+	rsci2_pins: rsci2 {
+		pinmux = <RZG3E_PORT_PINMUX(1, 1, 1)>, /* SER2_TX */
+			 <RZG3E_PORT_PINMUX(1, 0, 1)>, /* SER2_RX */
+			 <RZG3E_PORT_PINMUX(1, 2, 6)>, /* SER2_CTS# */
+			 <RZG3E_PORT_PINMUX(1, 3, 1)>; /* SER2_RTS# */
+		bias-pull-up;
+	};
+
+	rsci4_pins: rsci4 {
+		pinmux = <RZG3E_PORT_PINMUX(7, 7, 5)>, /* SER0_TX */
+			 <RZG3E_PORT_PINMUX(7, 6, 5)>; /* SER0_RX */
+		bias-pull-up;
+	};
+
+	rsci9_pins: rsci9 {
+		pinmux = <RZG3E_PORT_PINMUX(8, 3, 5)>, /* SER1_TX */
+			 <RZG3E_PORT_PINMUX(8, 2, 5)>; /* SER1_RX */
+		bias-pull-up;
+	};
+
 	scif_pins: scif {
 		pins = "SCIF_TXD", "SCIF_RXD";
 		renesas,output-impedance = <1>;
@@ -172,6 +195,23 @@ sd1-data {
 	};
 };
 
+&rsci2 {
+	pinctrl-0 = <&rsci2_pins>;
+	pinctrl-names = "default";
+
+	uart-has-rtscts;
+};
+
+&rsci4 {
+	pinctrl-0 = <&rsci4_pins>;
+	pinctrl-names = "default";
+};
+
+&rsci9 {
+	pinctrl-0 = <&rsci9_pins>;
+	pinctrl-names = "default";
+};
+
 &scif0 {
 	pinctrl-0 = <&scif_pins>;
 	pinctrl-names = "default";
diff --git a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
index a296c2c1c7ab..305215cdaeb3 100644
--- a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
+++ b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
@@ -89,6 +89,18 @@ &i2c0 {
 	clock-frequency = <400000>;
 };
 
+&rsci2 {
+	status = "okay";
+};
+
+&rsci4 {
+	status = "okay";
+};
+
+&rsci9 {
+	status = "okay";
+};
+
 &scif0 {
 	status = "okay";
 };
-- 
2.43.0