From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:13:47 +0200
Subject: Adding upstream version 2.8.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 plat/mediatek/mt8173/drivers/rtc/rtc.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 plat/mediatek/mt8173/drivers/rtc/rtc.c

(limited to 'plat/mediatek/mt8173/drivers/rtc/rtc.c')

diff --git a/plat/mediatek/mt8173/drivers/rtc/rtc.c b/plat/mediatek/mt8173/drivers/rtc/rtc.c
new file mode 100644
index 0000000..587886c
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/rtc/rtc.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <common/debug.h>
+
+#include <mt8173_def.h>
+#include <rtc.h>
+
+void rtc_bbpu_power_down(void)
+{
+	uint16_t bbpu;
+
+	/* pull PWRBB low */
+	bbpu = RTC_BBPU_KEY | RTC_BBPU_AUTO | RTC_BBPU_PWREN;
+	if (Writeif_unlock()) {
+		RTC_Write(RTC_BBPU, bbpu);
+		if (!RTC_Write_Trigger())
+			assert(0);
+	} else {
+		assert(0);
+	}
+}
-- 
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