rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

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