summaryrefslogtreecommitdiff
path: root/drivers/rtc/Kconfig
diff options
context:
space:
mode:
authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-07-06 12:42:02 +0300
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-07-07 14:14:14 +0300
commit697e5a47aa12cdab6f2a8b284cc923cdf704eafc (patch)
tree3c2a9a02d436c6499896b7c9800a91c2e8185891 /drivers/rtc/Kconfig
parent735ae2056b3c7296bb188d079c020f606a679c4a (diff)
downloadlinux-697e5a47aa12cdab6f2a8b284cc923cdf704eafc.tar.xz
rtc: add generic nvmem support
Many RTCs have an on board non volatile storage. It can be battery backed RAM or an EEPROM. Use the nvmem subsystem to export it to both userspace and in-kernel consumers. This stays compatible with the previous (non documented) ABI that was using /sys/class/rtc/rtcx/device/nvram to export that memory. But will warn about the deprecation. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/Kconfig')
-rw-r--r--drivers/rtc/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index d0e4b4a1c2a1..72419ac2c52a 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -77,6 +77,14 @@ config RTC_DEBUG
Say yes here to enable debugging support in the RTC framework
and individual RTC drivers.
+config RTC_NVMEM
+ bool "RTC non volatile storage support"
+ select NVMEM
+ default RTC_CLASS
+ help
+ Say yes here to add support for the non volatile (often battery
+ backed) storage present on RTCs.
+
comment "RTC interfaces"
config RTC_INTF_SYSFS