Patch "ARM: dts: am335x-chilisom: Wakeup from RTC-only state by power on event" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

ARM: dts: am335x-chilisom: Wakeup from RTC-only state by power on event

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
arm-dts-am335x-chilisom-wakeup-from-rtc-only-state-by-power-on-event.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Marcin Niestroj <[email protected]>
Date: Fri, 9 Dec 2016 12:33:27 +0100
Subject: ARM: dts: am335x-chilisom: Wakeup from RTC-only state by power on event

From: Marcin Niestroj <[email protected]>

[ Upstream commit ca244a83ecc7f0a9242ee2116e622cb6d7ec2a90 ]

On chiliSOM TPS65217 nWAKEUP pin is connected to AM335x internal RTC EXT_WAKEUP input. In RTC-only state TPS65217 is notifying about power on events (such as power buton presses) by setting nWAKEUP output low. After that it waits 5s for proper device boot. Currently it doesn't happen, as the processor doesn't listen for such events. Consequently TPS65217 changes state from SLEEP (RTC-only state) to OFF.

Enable EXT_WAKEUP input of AM335x's RTC, so the processor can properly detect power on events and recover immediately from RTC-only states, without powering off RTC and losing time.

---
 arch/arm/boot/dts/am335x-chilisom.dtsi |    8 ++++++++
 1 file changed, 8 insertions(+)

@@ -124,6 +124,14 @@
 
 &rtc {
 	system-power-controller;
+
+	pinctrl-0 = <&ext_wakeup>;
+	pinctrl-names = "default";
+
+	ext_wakeup: ext-wakeup {
+		pins = "ext_wakeup0";
+		input-enable;
+	};
 };
 
 /* NAND Flash */

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/arm-dts-am335x-chilisom-wakeup-from-rtc-only-state-by-power-on-event.patch