rtc: provide an emulated RTC
On a board without hardware clock this software real time clock can be
used. The build time is used to initialize the RTC. So you will have
to adjust the time either manually using the 'date' command or use
the 'sntp' to update the RTC with the time from a network time server.
See CONFIG_CMD_SNTP and CONFIG_BOOTP_NTPSERVER. The RTC time is
advanced according to CPU ticks.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 6366200..d06d272 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -63,6 +63,17 @@
Support for Dallas Semiconductor (now Maxim) DS3232 compatible
Real Time Clock devices.
+config RTC_EMULATION
+ bool "Enable emulated RTC"
+ depends on DM_RTC
+ help
+ On a board without hardware clock this software real time clock can be
+ used. The build time is used to initialize the RTC. So you will have
+ to adjust the time either manually using the 'date' command or use
+ the 'sntp' to update the RTC with the time from a network time server.
+ See CONFIG_CMD_SNTP and CONFIG_BOOTP_NTPSERVER. The RTC time is
+ advanced according to CPU ticks.
+
config RTC_ISL1208
bool "Enable ISL1208 driver"
depends on DM_RTC