1 files changed, 0 insertions, 73 deletions
diff --git a/target/linux/mvebu/patches-4.14/421-rtc-armada38x-reset-after-rtc-power-loss.patch b/target/linux/mvebu/patches-4.14/421-rtc-armada38x-reset-after-rtc-power-loss.patch
deleted file mode 100644
index 885e3d7c5e..0000000000
--- a/target/linux/mvebu/patches-4.14/421-rtc-armada38x-reset-after-rtc-power-loss.patch
+++ /dev/null
@@ -1,73 +0,0 @@
-From 1a990fefb641398fb580a0ea0be99b0ff27cbb9b Mon Sep 17 00:00:00 2001
-From: Baruch Siach <baruch@tkos.co.il>
-Date: Thu, 21 Jun 2018 20:40:23 +0300
-Subject: [PATCH] rtc: armada38x: reset after rtc power loss
-
-When the RTC block looses power it needs a reset sequence to make it
-usable again. Otherwise, writes to the time register have no effect.
-
-This reset sequence combines information from the mvebu_rtc driver in
-the Marvell provided U-Boot, and the SolidRun provided U-Boot repo.
-
-Tested on the Armada 388 based SolidRun Clearfog Base.
-
-Signed-off-by: Baruch Siach <baruch@tkos.co.il>
-Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
-Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
----
- drivers/rtc/rtc-armada38x.c | 23 +++++++++++++++++++++++
- 1 file changed, 23 insertions(+)
-
---- a/drivers/rtc/rtc-armada38x.c
-+++ b/drivers/rtc/rtc-armada38x.c
-@@ -30,6 +30,8 @@
- #define RTC_IRQ_FREQ_1HZ	    BIT(2)
- #define RTC_CCR		    0x18
- #define RTC_CCR_MODE		    BIT(15)
-+#define RTC_CONF_TEST	    0x1C
-+#define RTC_NOMINAL_TIMING	    BIT(13)
- 
- #define RTC_TIME	    0xC
- #define RTC_ALARM1	    0x10
-@@ -75,6 +77,7 @@ struct armada38x_rtc {
- 	void __iomem	    *regs_soc;
- 	spinlock_t	    lock;
- 	int		    irq;
-+	bool		    initialized;
- 	struct value_to_freq *val_to_freq;
- 	struct armada38x_rtc_data *data;
- };
-@@ -226,6 +229,23 @@ static int armada38x_rtc_read_time(struc
- 	return 0;
- }
- 
-+static void armada38x_rtc_reset(struct armada38x_rtc *rtc)
-+{
-+	u32 reg;
-+
-+	reg = rtc->data->read_rtc_reg(rtc, RTC_CONF_TEST);
-+	/* If bits [7:0] are non-zero, assume RTC was uninitialized */
-+	if (reg & 0xff) {
-+		rtc_delayed_write(0, rtc, RTC_CONF_TEST);
-+		msleep(500); /* Oscillator startup time */
-+		rtc_delayed_write(0, rtc, RTC_TIME);
-+		rtc_delayed_write(SOC_RTC_ALARM1 | SOC_RTC_ALARM2, rtc,
-+				  RTC_STATUS);
-+		rtc_delayed_write(RTC_NOMINAL_TIMING, rtc, RTC_CCR);
-+	}
-+	rtc->initialized = true;
-+}
-+
- static int armada38x_rtc_set_time(struct device *dev, struct rtc_time *tm)
- {
- 	struct armada38x_rtc *rtc = dev_get_drvdata(dev);
-@@ -237,6 +257,9 @@ static int armada38x_rtc_set_time(struct
- 	if (ret)
- 		goto out;
- 
-+	if (!rtc->initialized)
-+		armada38x_rtc_reset(rtc);
-+
- 	spin_lock_irqsave(&rtc->lock, flags);
- 	rtc_delayed_write(time, rtc, RTC_TIME);
- 	spin_unlock_irqrestore(&rtc->lock, flags);