On Mon, Oct 27, 2014 at 09:09:28AM +0100, Johan Hovold wrote: > Add new property "ti,system-power-controller" to register the RTC as a > power-off handler. > > Some RTC IP revisions can control an external PMIC via the pmic_power_en > pin, which can be configured to transition to OFF on ALARM2 events and > back to ON on subsequent ALARM (wakealarm) events. > > This is based on earlier work by Colin Foe-Parker and AnilKumar Ch. [1] > > [1] https://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg82127.html > > Tested-by: Felipe Balbi <balbi@xxxxxx> > Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> > --- > > Changes since v2: > - add two-second delay to allow alarm to trigger before returning > > Andrew, can you replace just this patch in the series that you already > have in your tree, or do you prefer I resend the whole series (with > Felipe's Tested-by tags)? > > Thanks, > Johan > > > Documentation/devicetree/bindings/rtc/rtc-omap.txt | 9 +- > drivers/rtc/rtc-omap.c | 95 ++++++++++++++++++++++ > 2 files changed, 103 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt > index 5a0f02d34d95..750efd40c72e 100644 > --- a/Documentation/devicetree/bindings/rtc/rtc-omap.txt > +++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt > @@ -5,11 +5,17 @@ Required properties: > - "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. > + Wakeup generation for event Alarm. It can also be > + used to control an external PMIC via the > + pmic_power_en pin. > - reg: Address range of rtc register set > - interrupts: rtc timer, alarm interrupts in order > - interrupt-parent: phandle for the interrupt controller > > +Optional properties: > +- ti,system-power-controller: whether the rtc is controlling the system power isn't there a discussion going on to drop the vendor prefix ? I wonder if we should just use the final binding to avoid supporting this for rtc-omap too. OTOH, all of that can be hidden under of_is_system_power_controller() itself. -- balbi
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