shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-09 04:10:18 +09:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
[ Upstream commit ca244a83ec ]

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.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marcin Niestroj
2016-12-09 12:33:27 +01:00
committed by Greg Kroah-Hartman
parent bc9ad17c7a
commit 484e3e7934
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/arm/boot/dts/am335x-chilisom.dtsi
View File

@@ -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 */