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| author | Hugo Villeneuve <hvilleneuve@dimonoff.com> | 2023-06-22 10:57:54 -0400 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-07-27 22:54:52 +0200 |
| commit | afc505bf9039caf5a377d8b9705ef42f6d4ac7d4 (patch) | |
| tree | f2fcb1b729e57bb927867db603c7598890c4e937 /drivers/rtc/Kconfig | |
| parent | 420cc9e850dbc8e6ea7dd1e53d62d64cd8766354 (diff) | |
| download | lwn-afc505bf9039caf5a377d8b9705ef42f6d4ac7d4.tar.gz lwn-afc505bf9039caf5a377d8b9705ef42f6d4ac7d4.zip | |
rtc: pcf2127: add support for PCF2131 RTC
This RTC is very similar in functionality to the PCF2127/29.
Basically it:
-supports two new control registers at offsets 4 and 5
-supports a new reset register (not implemented in this driver)
-supports 4 tamper detection functions instead of 1
-has no nvmem (like the PCF2129)
-has two output interrupt pins
Because of that, most of the register addresses are very different,
although they still follow the same layout. For example, the tamper
registers have a different base address, but the offsets are all the same.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20230622145800.2442116-12-hugo@hugovil.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/Kconfig')
| -rw-r--r-- | drivers/rtc/Kconfig | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 05f4b2d66290..e8bad8c93ba9 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -904,9 +904,9 @@ config RTC_DRV_PCF2127 select REGMAP_SPI if SPI_MASTER select WATCHDOG_CORE if WATCHDOG help - If you say yes here you get support for the NXP PCF2127/29 RTC + If you say yes here you get support for the NXP PCF2127/29/31 RTC chips with integrated quartz crystal for industrial applications. - Both chips also have watchdog timer and tamper switch detection + These chips also have watchdog timer and tamper switch detection features. PCF2127 has an additional feature of 512 bytes battery backed |