From a92008c17d13a902705da8caf787f9e9deb5ed26 Mon Sep 17 00:00:00 2001
From: Richard Wheatley <richard.wheatley@ambiq.com>
Date: Tue, 5 Sep 2023 09:54:39 -0500
Subject: [PATCH] soc: arm: ambiq: apollo4: add simobuck init to apollo4 init

Adds comments and simobuck init function for low power.

Signed-off-by: Richard Wheatley <richard.wheatley@ambiq.com>
---
 soc/arm/ambiq/apollo4x/soc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/soc/arm/ambiq/apollo4x/soc.c b/soc/arm/ambiq/apollo4x/soc.c
index 30288ad12c3..225f5013441 100644
--- a/soc/arm/ambiq/apollo4x/soc.c
+++ b/soc/arm/ambiq/apollo4x/soc.c
@@ -10,7 +10,14 @@
 
 static int arm_apollo4_init(void)
 {
+
+	/* Initialize for low power in the power control block */
 	am_hal_pwrctrl_low_power_init();
+
+	/* Enable SIMOBUCK for the Apollo4 Family */
+	am_hal_pwrctrl_control(AM_HAL_PWRCTRL_CONTROL_SIMOBUCK_INIT, 0);
+
+	/* Disable the RTC. */
 	am_hal_rtc_osc_disable();
 
 	return 0;