[PATCH 3/9] MXS/i.MX28: prepare different clocking of the built-in RTC
Steffen Trumtrar
s.trumtrar at pengutronix.de
Mon Mar 4 09:05:42 EST 2013
From: Juergen Beisert <jbe at pengutronix.de>
Signed-off-by: Juergen Beisert <jbe at pengutronix.de>
---
drivers/rtc/rtc-stmp3xxx.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 98f0d3c..7311292 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -53,18 +53,26 @@
#define STMP3XXX_RTC_PERSISTENT0 0x60
#define STMP3XXX_RTC_PERSISTENT0_SET 0x64
#define STMP3XXX_RTC_PERSISTENT0_CLR 0x68
+#define STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE (1 << 0)
#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN 0x00000002
#define STMP3XXX_RTC_PERSISTENT0_ALARM_EN 0x00000004
+#define STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP (1 << 4)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP (1 << 5)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ (1 << 6)
+
#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE 0x00000080
#define STMP3XXX_RTC_PERSISTENT1 0x70
/* missing bitmask in headers */
#define STMP3XXX_RTC_PERSISTENT1_FORCE_UPDATER 0x80000000
+enum clock_source { MXS_UNKNOWN, MXS_OSC_24M, MXS_OSC_32K, MXS_OSC_32K768 };
+
struct stmp3xxx_rtc_data {
struct rtc_device *rtc;
void __iomem *io;
int irq_alarm;
+ enum clock_source clk_src;
};
#if IS_ENABLED(CONFIG_STMP3XXX_RTC_WATCHDOG)
--
1.7.10.4
More information about the linux-arm-kernel
mailing list