More Shenzhou board logic

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5111 42af7a65-404d-4744-a932-0658087f49c3

drivers/Kconfig

@@ -126,6 +126,59 @@ config SPI_CMDDATA
 
 endif
 
+config RTC
+	bool "RTC support"
+	default n
+	---help---
+		This selection enables configuration of a real time clock (RTCdriver.
+		See include/nuttx/rtc.h for further watchdog timer driver information.
+		Most RTC drivers are MCU specific and may require other specific settings.
+
+config RTC_DATETIME
+	bool "Date/Time RTC support"
+	default n
+	depends on RTC
+	---help---
+		There are two general types of RTC:  (1) A simple battery backed counter
+		that keeps the time when power is down, and (2) a full date / time RTC the
+		provides the date and time information, often in BCD format.  If
+		RTC_DATETIME is selected, it specifies this second kind of RTC. In this
+		case, the RTC is used to "seed" the normal NuttX timer and the NuttX system
+		timer provides for higher resolution time.
+
+config RTC_HIRES
+	bool "Hi-Res RTC support"
+	default n
+	depends on RTC && !RTC_DATETIME
+	---help---
+		If RTC_DATETIME not selected, then the simple, battery backed counter is
+		used.  There are two different implementations of such simple counters
+		based on the time resolution of the counter: The typical RTC keeps time
+		to resolution of 1 second, usually supporting a 32-bit time_t value.  In
+		this case, the RTC is used to "seed" the normal NuttX timer and the NuttX
+		timer provides for higherresoution time.
+
+		If RTC_HIRES is enabled in the NuttX configuration, then the RTC provides
+		higher resolution time and completely replaces the system timer for purpose
+		of date and time.
+
+config RTC_FREQUENCY
+	int "Hi-Res RTC frequency"
+	default 1
+	depends on RTC && !RTC_DATETIME && RTC_HIRES
+	---help---
+		If RTC_HIRES is defined, then the frequency of the high resolution RTC
+		must be provided.  If RTC_HIRES is not defined, RTC_FREQUENCY is assumed
+		to be one Hz.
+
+config RTC_ALARM 
+	bool "RTC alarm support"
+	default n
+	depends on RTC
+	---help---
+		Enable if the RTC hardware supports setting of an alarm.  A callback
+		function will be executed when the alarm goes off.
+
 config WATCHDOG
 	bool "Watchdog timer support"
 	default n

drivers/mmcsd/Kconfig

@@ -40,7 +40,7 @@ config MMCSD_HAVECARDDETECT
 config MMCSD_SPI
 	bool "MMC/SD spi transfer support"
 	default y
-	
+
 config MMCSD_SPICLOCK
 	int "MMC/SD maximum SPI clock"
 	default 20000000