From 0d541e41d19f17239fb03e961efa8676938294d9 Mon Sep 17 00:00:00 2001
From: Bjarki Arge Andreasen <bjarki.andreasen@nordicsemi.no>
Date: Thu, 17 Jul 2025 09:35:32 +0200
Subject: [PATCH] zephyr: boards: nrf54h20dk: disable power domains

The nrf54h20 power domains are forced on at boot, no need to
enable them or their drivers unless they are to be managed further
within the bootloader.

Signed-off-by: Bjarki Arge Andreasen <bjarki.andreasen@nordicsemi.no>
---
 .../nrf54h20dk_nrf54h20_cpuapp_iron.conf      |  4 ++
 .../nrf54h20dk_nrf54h20_cpuapp_iron.overlay   | 53 +++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.overlay

diff --git a/boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.conf b/boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.conf
index 12c96ff0f..30594ff39 100644
--- a/boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.conf
+++ b/boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.conf
@@ -7,3 +7,7 @@
 CONFIG_SPI_NOR=n
 
 CONFIG_BOOT_WATCHDOG_FEED=n
+
+# Power domains forced on by default on boot, no need
+# to manage them in bootloader.
+CONFIG_POWER_DOMAIN=n
diff --git a/boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.overlay b/boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.overlay
new file mode 100644
index 000000000..d564ed924
--- /dev/null
+++ b/boot/zephyr/boards/nrf54h20dk_nrf54h20_cpuapp_iron.overlay
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&gdpwr {
+	status = "disabled";
+};
+
+&gdpwr_fast_active_0 {
+	status = "disabled";
+};
+
+&gdpwr_fast_active_1 {
+	status = "disabled";
+};
+
+&gdpwr_fast_main {
+	status = "disabled";
+};
+
+&gdpwr_slow_active {
+	status = "disabled";
+};
+
+&gdpwr_slow_main {
+	status = "disabled";
+};
+
+&gpio_pad_group0 {
+	status = "disabled";
+};
+
+&gpio_pad_group1 {
+	status = "disabled";
+};
+
+&gpio_pad_group2 {
+	status = "disabled";
+};
+
+&gpio_pad_group6 {
+	status = "disabled";
+};
+
+&gpio_pad_group7 {
+	status = "disabled";
+};
+
+&gpio_pad_group9 {
+	status = "disabled";
+};