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| author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-07-06 12:42:02 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-07-07 14:14:14 +0300 |
| commit | 697e5a47aa12cdab6f2a8b284cc923cdf704eafc (patch) | |
| tree | 3c2a9a02d436c6499896b7c9800a91c2e8185891 /drivers/rtc/Kconfig | |
| parent | 735ae2056b3c7296bb188d079c020f606a679c4a (diff) | |
| download | linux-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/Kconfig | 8 |
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 |