linux-kernel - [PATCH] arm64: dts: ti: k3-j722s-evm: Enable main

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Date: Tue, 28 May 2024 15:09:11 +0530
From: Bhavya Kapoor <b-kapoor@...com>
To: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <conor+dt@...nel.org>,
        <krzk+dt@...nel.org>, <robh@...nel.org>, <kristo@...nel.org>,
        <b-kapoor@...com>, <vigneshr@...com>, <nm@...com>
Subject: [PATCH] arm64: dts: ti: k3-j722s-evm: Enable main_uart5

main_uart5 node defined in the SoC dtsi file is incomplete
and will not be functional unless it is extended with pinmux
information at board integration level.

Thus, add pinmux for main_uart5 in the board dts file and
enable it to make it functional.

Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
---
 arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index bf3c246d13d1..e3892a6f2fab 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -18,6 +18,7 @@ / {
 	aliases {
 		serial0 = &wkup_uart0;
 		serial2 = &main_uart0;
+		serial3 = &main_uart5;
 		mmc0 = &sdhci0;
 		mmc1 = &sdhci1;
 	};
@@ -142,6 +143,14 @@ J722S_IOPAD(0x01cc, PIN_OUTPUT, 0)	/* (B22) UART0_TXD */
 		bootph-all;
 	};
 
+	main_uart5_pins_default: main-uart5-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x0108, PIN_INPUT, 3)	/* (J27) UART5_RXD */
+			J722S_IOPAD(0x010c, PIN_OUTPUT, 3)	/* (H27) UART5_TXD */
+		>;
+		bootph-all;
+	};
+
 	vdd_sd_dv_pins_default: vdd-sd-dv-default-pins {
 		pinctrl-single,pins = <
 			J722S_IOPAD(0x0120, PIN_INPUT, 7) /* (F27) MMC2_CMD.GPIO0_70 */
@@ -240,6 +249,13 @@ &main_uart0 {
 	bootph-all;
 };
 
+&main_uart5 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_uart5_pins_default>;
+	status = "okay";
+	bootph-all;
+};
+
 &mcu_pmx0 {
 
 	wkup_uart0_pins_default: wkup-uart0-default-pins {
-- 
2.34.1