17d116dccSCC Ma /* 27d116dccSCC Ma * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. 37d116dccSCC Ma * 482cb2c1aSdp-arm * SPDX-License-Identifier: BSD-3-Clause 57d116dccSCC Ma */ 609d40e0eSAntonio Nino Diaz 77d116dccSCC Ma #include <assert.h> 809d40e0eSAntonio Nino Diaz #include <common/debug.h> 909d40e0eSAntonio Nino Diaz 107d116dccSCC Ma #include <mt8173_def.h> 117d116dccSCC Ma #include <rtc.h> 127d116dccSCC Ma 137d116dccSCC Ma void rtc_bbpu_power_down(void) 147d116dccSCC Ma { 157d116dccSCC Ma uint16_t bbpu; 167d116dccSCC Ma 177d116dccSCC Ma /* pull PWRBB low */ 187d116dccSCC Ma bbpu = RTC_BBPU_KEY | RTC_BBPU_AUTO | RTC_BBPU_PWREN; 197d116dccSCC Ma if (Writeif_unlock()) { 207d116dccSCC Ma RTC_Write(RTC_BBPU, bbpu); 21*f389d0e9Skenny liang if (!RTC_Write_Trigger()) 22b99d961cSJimmy Huang assert(0); 237d116dccSCC Ma } else { 24b99d961cSJimmy Huang assert(0); 257d116dccSCC Ma } 267d116dccSCC Ma } 27