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drivers/rtc/rtc-omap.c: add rtc wakeup support to alarm events

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On some platforms (like AM33xx), a special register (RTC_IRQWAKEEN) is
available to enable Alarm Wakeup feature.  This register needs to be
properly handled for the rtcwake to work properly.

Platforms using such IP should set "ti,am3352-rtc" in rtc device dt
compatibility node.

Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hebbar Gururaja 2013-09-11 14:24:18 -07:00 • committed by Linus Torvalds
parent 453b4c6db5
commit 8af750e3f5
2 changed files with 57 additions and 9 deletions
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6
Documentation/devicetree/bindings/rtc/rtc-omap.txt
View file

@ -1,7 +1,11 @@
TI Real Time Clock
Required properties:
- compatible: "ti,da830-rtc"
- compatible:
- "ti,da830-rtc" - for RTC IP used similar to that on DA8xx SoC family.
- "ti,am3352-rtc" - for RTC IP used similar to that on AM335x SoC family.
This RTC IP has special WAKE-EN Register to enable
Wakeup generation for event Alarm.
- reg: Address range of rtc register set
- interrupts: rtc timer, alarm interrupts in order
- interrupt-parent: phandle for the interrupt controller