From 2b26ab132d1b33b91c84c6d732456200e8c5ee77 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 24 Nov 2023 08:39:05 +0000
Subject: [PATCH] add support 4g -- >ppp

---
 kernel/drivers/rtc/rtc-rk808.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/kernel/drivers/rtc/rtc-rk808.c b/kernel/drivers/rtc/rtc-rk808.c
index 67e5a94..142118d 100644
--- a/kernel/drivers/rtc/rtc-rk808.c
+++ b/kernel/drivers/rtc/rtc-rk808.c
@@ -36,6 +36,7 @@
 #define BIT_RTC_CTRL_REG_RTC_READSEL_M		BIT(7)
 #define BIT_RTC_INTERRUPTS_REG_IT_ALARM_M	BIT(3)
 #define RTC_STATUS_MASK		0xFE
+#define RTC_ALARM_STATUS			BIT(6)
 
 #define SECONDS_REG_MSK		0x7F
 #define MINUTES_REG_MAK		0x7F
@@ -258,6 +259,12 @@
 	ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->int_reg,
 				 BIT_RTC_INTERRUPTS_REG_IT_ALARM_M, 0);
 
+	/*
+	 * The rtc alarm status(BIT(6)) must be cleared after alarm 1s or
+	 * after the alarm is disabled.
+	 */
+	ret = regmap_write(rk808->regmap, rk808_rtc->creg->status_reg,
+			   RTC_ALARM_STATUS);
 	return ret;
 }
 

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