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The Linux kernel configuration item CONFIG_RTC_DRV_PCF2127
:
CONFIG_RTC_I2C_AND_SPI
rtc-pcf2127
If you say yes here you get support for the NXP PCF2127/29/31 RTC chips with integrated quartz crystal for industrial applications. These 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.
Raw data from LKDDb:
lkddb i2c "pca2129" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 5.9–5.19, 6.0–6.12
lkddb i2c "pcf2127" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 3.11–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
lkddb i2c "pcf2129" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 4.6–4.20, 5.0–5.19, 6.0–6.12
lkddb i2c "pcf2131" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 6.6–6.12
lkddb module rtc-pcf2127 CONFIG_RTC_DRV_PCF2127 : drivers/rtc/Kconfig : "NXP PCF2127" # in 3.11–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
lkddb of "" "" "nxp,pca2129" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 5.9–5.19, 6.0–6.12
lkddb of "" "" "nxp,pcf2127" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 3.11–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
lkddb of "" "" "nxp,pcf2129" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 4.6–4.20, 5.0–5.19, 6.0–6.12
lkddb of "" "" "nxp,pcf2131" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 6.6–6.12
lkddb spi "pca2129" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 5.9–5.19, 6.0–6.12
lkddb spi "pcf2127" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 4.6–4.20, 5.0–5.19, 6.0–6.12
lkddb spi "pcf2129" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 4.6–4.20, 5.0–5.19, 6.0–6.12
lkddb spi "pcf2131" : CONFIG_RTC_DRV_PCF2127 CONFIG_RTC_LIB : drivers/rtc/rtc-pcf2127.c # in 6.6–6.12
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Automatically generated (in year 2024). See also LKDDb sources on GitLab