CONFIG_RTC_DRV_CMOS: PC-style 'CMOS'

General informations

The Linux kernel configuration item CONFIG_RTC_DRV_CMOS has multiple definitions:

PC-style 'CMOS' found in drivers/rtc/Kconfig

The configuration item CONFIG_RTC_DRV_CMOS:

• prompt: PC-style 'CMOS'
• type: tristate
• depends on: ( CONFIG_X86 || CONFIG_ARM || CONFIG_PPC || CONFIG_MIPS || CONFIG_SPARC64 ) && ( CONFIG_HAS_IOPORT || CONFIG_MACH_DECSTATION ) && ( CONFIG_X86 )
• defined in drivers/rtc/Kconfig
• found in Linux kernels: 2.6.22–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
• modules built: rtc-cmos

Help text

Say "yes" here to get direct support for the real time clock found in every PC or ACPI-based system, and some other boards. Specifically the original MC146818, compatibles like those in PC south bridges, the DS12887 or M48T86, some multifunction or LPC bus chips, and so on.

Your system will need to define the platform device used by this driver, otherwise it won't be accessible. This means you can safely enable this driver if you don't know whether or not your board has this kind of hardware.

This driver can also be built as a module. If so, the module will be called rtc-cmos.

PC-style 'CMOS' real time clock found in drivers/rtc/Kconfig

The configuration item CONFIG_RTC_DRV_CMOS:

• prompt: PC-style 'CMOS' real time clock
• type: tristate
• depends on: CONFIG_RTC_CLASS && ( CONFIG_X86 || CONFIG_ALPHA || CONFIG_ARM26 || CONFIG_ARM \
• defined in drivers/rtc/Kconfig
• found in Linux kernels: 2.6.21
• modules built: rtc-cmos

Help text

Say "yes" here to get direct support for the real time clock found in every PC or ACPI-based system, and some other boards. Specifically the original MC146818, compatibles like those in PC south bridges, the DS12887 or M48T86, some multifunction or LPC bus chips, and so on.

Your system will need to define the platform device used by this driver, otherwise it won't be accessible. This means you can safely enable this driver if you don't know whether or not your board has this kind of hardware.

This driver can also be built as a module. If so, the module will be called rtc-cmos.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module rtc-cmos CONFIG_RTC_DRV_CMOS : drivers/rtc/Kconfig : "PC-style 'CMOS'" # in 2.6.21–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
• lkddb of "" "" "motorola,mc146818" : CONFIG_RTC_DRV_CMOS CONFIG_RTC_LIB : drivers/rtc/rtc-cmos.c # in 2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
• lkddb platform "rtc_cmos" : CONFIG_RTC_DRV_CMOS CONFIG_RTC_LIB : drivers/rtc/rtc-cmos.c # in 2.6.21–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
• lkddb pnp "PNP0b00" "" "" "" "" "" "" "" "" : CONFIG_RTC_DRV_CMOS CONFIG_RTC_LIB : drivers/rtc/rtc-cmos.c # in 2.6.21–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
• lkddb pnp "PNP0b01" "" "" "" "" "" "" "" "" : CONFIG_RTC_DRV_CMOS CONFIG_RTC_LIB : drivers/rtc/rtc-cmos.c # in 2.6.21–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
• lkddb pnp "PNP0b02" "" "" "" "" "" "" "" "" : CONFIG_RTC_DRV_CMOS CONFIG_RTC_LIB : drivers/rtc/rtc-cmos.c # in 2.6.21–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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