[PATCH v2] arm64: dts: ti: Add k3-am62p-wakeup.dtsi for AM62PX efuse GP_SW1

Create k3-am62p-wakeup.dtsi which includes AM62P-specific WAKEUP
domain nodes.

In k3-am62p-wakeup.dtsi, add the efuse node for GP_SW1 register at
offset 0x230. GP_SW1 will be used to determine AM62P silicon revision.

Signed-off-by: Judith Mendez <jm@ti.com>
---
This patch adds GP_SW1 efuse node for AM62PX only now that bindings [0]
are in place.

Changes since v1:
- Move gpsw_efuse from k3-am62p-j722s-common-wakeup.dtsi to the new
  k3-am62p-wakeup.dtsi [1] since GP_SW efuse registers are marked
  reserved for J722S.

[0] https://lore.kernel.org/all/178942274041.683176.599438200260103620.b4-ty@kernel.org/ (local)
[1] https://lore.kernel.org/all/5d4742fa-e26a-4b49-8eb4-b6291c402334@ti.com/#t (local)

Link to v1:
https://lore.kernel.org/all/20260915001304.3781247-1-jm@ti.com/ (local)
---
 arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi | 25 +++++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-am62p.dtsi        |  1 +
 2 files changed, 26 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi

diff --git a/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi
new file mode 100644
index 0000000000000..c56fb3890c983
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Device Tree file for the AM62P WAKEUP domain peripherals
+ *
+ * Copyright (C) 2026 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+&wkup_conf {
+	gpsw_efuse: efuse@230 {
+		compatible = "ti,am62p-efuse", "socionext,uniphier-efuse";
+		reg = <0x230 0x10>;
+		#address-cells = <1>;
+		bootph-all;
+		#size-cells = <1>;
+
+		gpsw1: gpsw1@4 {
+			reg = <0x4 0x4>;
+		};
+	};
+};
+
+&chipid {
+	nvmem-cells = <&gpsw1>;
+	nvmem-cell-names = "gpsw1";
+};

diff --git a/arch/arm64/boot/dts/ti/k3-am62p.dtsi b/arch/arm64/boot/dts/ti/k3-am62p.dtsi
index 9d6266d6ddb82..058f264ee0646 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p.dtsi

@@ -154,3 +154,4 @@ cbass_wakeup: bus@b00000 {
 
 /* Include AM62P specific peripherals */
 #include "k3-am62p-main.dtsi"
+#include "k3-am62p-wakeup.dtsi"

-- 
2.34.1