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Commit 3969eb48 authored by Boris Brezillon's avatar Boris Brezillon Committed by Nicolas Ferre
Browse files

rtc: at91sam9: rework the Kconfig description 



Remove all references to AT91CAP9 SoC which has been removed.
Rework help message to remove any specific references to AT91SAM9 SoCs.
State that RTC_DRV_AT91SAM9_RTT and RTC_DRV_AT91SAM9_GPBR options are only
used when booting non DT boards.

Signed-off-by: default avatarBoris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: default avatarJohan Hovold <johan@kernel.org>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
parent 43e112bb

drivers/rtc/Kconfig

+15 −8
Original line number Diff line number Diff line
@@ -1109,17 +1109,18 @@ config RTC_DRV_AT91RM9200 
	  this is powered by the backup power supply.



config RTC_DRV_AT91SAM9

	tristate "AT91SAM9x/AT91CAP9 RTT as RTC"

	tristate "AT91SAM9 RTT as RTC"

	depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)

	select MFD_SYSCON

	help

	  RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT

	  (Real Time Timer). These timers are powered by the backup power

	  supply (such as a small coin cell battery), but do not need to

	  be used as RTCs.



	  (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the

	  dedicated RTC module and leave the RTT available for other uses.)

	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which

	  can be used as an RTC thanks to the backup power supply (e.g. a

	  small coin cell battery) which keeps this block and the GPBR

	  (General Purpose Backup Registers) block powered when the device

	  is shutdown.

	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd

	  probably want to use the real RTC block instead of the "RTT as an

	  RTC" driver.



config RTC_DRV_AT91SAM9_RTT

	int
@@ -1128,6 +1129,9 @@ config RTC_DRV_AT91SAM9_RTT 
	prompt "RTT module Number" if ARCH_AT91SAM9263

	depends on RTC_DRV_AT91SAM9

	help

	  This option is only relevant for legacy board support and

	  won't be used when booting a DT board.



	  More than one RTT module is available. You can choose which

	  one will be used as an RTC. The default of zero is normally

	  OK to use, though some systems use that for non-RTC purposes.
@@ -1140,6 +1144,9 @@ config RTC_DRV_AT91SAM9_GPBR 
	prompt "Backup Register Number"

	depends on RTC_DRV_AT91SAM9

	help

	  This option is only relevant for legacy board support and

	  won't be used when booting a DT board.



	  The RTC driver needs to use one of the General Purpose Backup

	  Registers (GPBRs) as well as the RTT. You can choose which one

	  will be used. The default of zero is normally OK to use, but