~hc/RK356X_SDK_RELEASE.git

..	..	@@ -33,6 +33,14 @@
33	33	Requires a separate RTC_PIE_ON call to enable the periodic
34	34	interrupts.
35	35
	36	+ * RTC_VL_READ: Read the voltage inputs status of the RTC when
	37	+ supported. The value is a bit field of RTC_VL_*, giving the
	38	+ status of the main and backup voltages.
	39	+
	40	+ * RTC_VL_CLEAR: Clear the voltage status of the RTC. Some RTCs
	41	+ need user interaction when the backup power provider is
	42	+ replaced or charged to be able to clear the status.
	43	+
36	44	The ioctl() calls supported by the older /dev/rtc interface are
37	45	also supported by the newer RTC class framework. However,
38	46	because the chips and systems are not standardized, some PC/AT