1 /*
2  * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <assert.h>
8 #include <common/debug.h>
9 
10 #include <mt8173_def.h>
11 #include <rtc.h>
12 
rtc_bbpu_power_down(void)13 void rtc_bbpu_power_down(void)
14 {
15 	uint16_t bbpu;
16 
17 	/* pull PWRBB low */
18 	bbpu = RTC_BBPU_KEY | RTC_BBPU_AUTO | RTC_BBPU_PWREN;
19 	if (Writeif_unlock()) {
20 		RTC_Write(RTC_BBPU, bbpu);
21 		if (!RTC_Write_Trigger())
22 			assert(0);
23 	} else {
24 		assert(0);
25 	}
26 }
27