diff options
Diffstat (limited to 'drivers/rtc/Kconfig')
| -rw-r--r-- | drivers/rtc/Kconfig | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index d06d272e14..cad667a404 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -68,11 +68,14 @@ config RTC_EMULATION 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. + used. The initial time may be provided via the environment variable + 'rtc_emul_epoch' as a decimal string indicating seconds since + 1970-01-01. If the environment variable is missing, the build time is + used to initialize the RTC. The time can be adjusted manually via the + 'date' command or the 'sntp' command can be used 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" |