arm64: dts: renesas: ulcb: Mark SWDT as reserved

This watchdog can't be used with Linux because the firmware needs it on
ULCB boards. Sadly, it doesn't mark the node as reserved, so this is
added manually here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20250925093941.8800-23-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/ulcb.dtsi b/arch/arm64/boot/dts/renesas/ulcb.dtsi
index 8a30908992ab095f6a398b58c7dfe1bef008e472..a9e53b36f1d9cbcfa2383aa24654f5aca368424f 100644 (file)
--- a/arch/arm64/boot/dts/renesas/ulcb.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb.dtsi
@@ -495,6 +495,11 @@
        shared-pin;
 };
 
+/* Firmware should reserve it but sadly doesn't */
+&swdt {
+       status = "reserved";
+};
+
 &usb2_phy1 {
        pinctrl-0 = <&usb1_pins>;
        pinctrl-names = "default";