linux-kernel - [PATCH 3/3] arm64: boot: dts: ti: k3-am62l3-evm: enable WKUP UART wakeup from LPM

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Message-ID: <20251230-wkup-uart-wakeup-v1-3-cd6e15f8d956@ti.com>
Date: Tue, 30 Dec 2025 20:51:42 -0600
From: Kendall Willis <k-willis@...com>
To: Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>, "Tero
 Kristo" <kristo@...nel.org>, Rob Herring <robh@...nel.org>, "Krzysztof
 Kozlowski" <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, "Dhruva
 Gole" <d-gole@...com>, Bryan Brattlof <bb@...com>
CC: <vishalm@...com>, <sebin.francis@...com>, <msp@...libre.com>,
	<khilman@...libre.com>, <a-kaur@...com>, <s-kochidanadu@...com>,
	<linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Kendall Willis <k-willis@...com>
Subject: [PATCH 3/3] arm64: boot: dts: ti: k3-am62l3-evm: enable WKUP UART
 wakeup from LPM

Change the status of the wkup_uart0_interconnect node to enabled. The
target-module node sets the UART SYSC and SYSS registers to allow wakeup
from WKUP UART in DeepSleep low power mode.

Signed-off-by: Kendall Willis <k-willis@...com>
---
 arch/arm64/boot/dts/ti/k3-am62l3-evm.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
index cae04cce337366b50928d39b0c888550b14e43d3..02b1a1c76b2ee05d49cd69d199a6aacdb1973fa0 100644
--- a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
@@ -359,3 +359,7 @@ &usb1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&usb1_default_pins>;
 };
+
+&wkup_uart0_interconnect {
+	status = "okay";
+};

-- 
2.34.1