1 files changed, 22 insertions, 0 deletions
diff --git a/board/herobrine_npcx9/power.c b/board/herobrine_npcx9/power.c
new file mode 100644
index 0000000000..0a55b49d3d
--- /dev/null
+++ b/board/herobrine_npcx9/power.c
@@ -0,0 +1,22 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gpio.h"
+#include "hooks.h"
+
+void board_chipset_pre_init(void)
+{
+	/* Turn on the 3.3V rail */
+	gpio_set_level(GPIO_EN_PP3300_A, 1);
+}
+DECLARE_HOOK(HOOK_CHIPSET_PRE_INIT, board_chipset_pre_init, HOOK_PRIO_DEFAULT);
+
+void board_chipset_shutdown_complete(void)
+{
+	/* Turn off the 3.3V and 5V rails. */
+	gpio_set_level(GPIO_EN_PP3300_A, 0);
+}
+DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN_COMPLETE, board_chipset_shutdown_complete,
+		HOOK_PRIO_DEFAULT);