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Diffstat (limited to 'plat/mediatek/mt8173/drivers/rtc/rtc.c')
-rw-r--r--plat/mediatek/mt8173/drivers/rtc/rtc.c26
1 files changed, 26 insertions, 0 deletions
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);
+ }
+}