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| author | Marcin Niestroj <m.niestroj@grinn-global.com> | 2016-12-09 12:33:27 +0100 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2017-01-05 08:53:29 -0800 |
| commit | ca244a83ecc7f0a9242ee2116e622cb6d7ec2a90 (patch) | |
| tree | 5d17d6b909423dee6dba60bf7265afbdf92d5d54 /arch/arm/boot/dts/am335x-chilisom.dtsi | |
| parent | f585a15cb094606f0bdfb8926826e0ca27f64af6 (diff) | |
| download | lwn-ca244a83ecc7f0a9242ee2116e622cb6d7ec2a90.tar.gz lwn-ca244a83ecc7f0a9242ee2116e622cb6d7ec2a90.zip | |
ARM: dts: am335x-chilisom: Wakeup from RTC-only state by power on event
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>
Diffstat (limited to 'arch/arm/boot/dts/am335x-chilisom.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/am335x-chilisom.dtsi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/am335x-chilisom.dtsi b/arch/arm/boot/dts/am335x-chilisom.dtsi index f9ee5859c154..1b43ebd08b38 100644 --- a/arch/arm/boot/dts/am335x-chilisom.dtsi +++ b/arch/arm/boot/dts/am335x-chilisom.dtsi @@ -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 */ |