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-rw-r--r--drivers/rtc/Kconfig7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 63bd72a96210..758f7a417470 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -888,7 +888,12 @@ config RTC_DRV_PCF2127
depends on RTC_I2C_AND_SPI
help
If you say yes here you get support for the NXP PCF2127/29 RTC
- chips.
+ chips with integrated quartz crystal for industrial applications.
+ Both chips also have watchdog timer and tamper switch detection
+ features.
+
+ PCF2127 has an additional feature of 512 bytes battery backed
+ memory that's accessible using nvmem interface.
This driver can also be built as a module. If so, the module
will be called rtc-pcf2127.