1 files changed, 41 insertions, 4 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 484de8e4c5ae..6402d699072b 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -469,10 +469,47 @@ config RTC_DRV_AT32AP700X
           AT32AP700x family processors.
 
 config RTC_DRV_AT91RM9200
-        tristate "AT91RM9200"
-        depends on ARCH_AT91RM9200
-        help
-          Driver for the Atmel AT91RM9200's internal RTC (Realtime Clock).
+        tristate "AT91RM9200 or AT91SAM9RL"
+        depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL
+        help
+          Driver for the internal RTC (Realtime Clock) module found on
+          Atmel AT91RM9200's and AT91SAM9RL chips.  On SAM9RL chips
+          this is powered by the backup power supply.
+
+config RTC_DRV_AT91SAM9
+        tristate "AT91SAM9x"
+        depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
+        help
+          RTC driver for the Atmel AT91SAM9x 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 chips you probably want to use the dedicated RTC
+          module and leave the RTT available for other uses.)
+
+config RTC_DRV_AT91SAM9_RTT
+        int
+        range 0 1
+        default 0
+        prompt "RTT module Number" if ARCH_AT91SAM9263
+        depends on RTC_DRV_AT91SAM9
+        help
+          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.
+
+config RTC_DRV_AT91SAM9_GPBR
+        int
+        range 0 3 if !ARCH_AT91SAM9263
+        range 0 15 if ARCH_AT91SAM9263
+        default 0
+        prompt "Backup Register Number"
+        depends on RTC_DRV_AT91SAM9
+        help
+          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
+          on some systems other software needs to use that register.
 
 config RTC_DRV_BFIN
         tristate "Blackfin On-Chip RTC"