openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Boris BREZILLON 2014-09-23 13:16:05 +02:00 committed by Nicolas Ferre
parent 43e112bb3d
commit 3969eb48ad
1 changed files with 15 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/rtc/Kconfig
View File

@ -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