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authorDaniel González Cabanelas <dgcbueu@gmail.com>2020-11-24 16:06:52 +0100
committerPetr Štetiar <ynezz@true.cz>2020-12-22 18:59:10 +0100
commitb8362c20e7a7e83707a39f84689ec4180a4b53fb (patch)
tree19dd59272557f7bc382d68281ed45bbeb6634559 /target
parent8336b0df5d6de83c9f44bef470a37a93b472773a (diff)
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mvebu: LS421DE: use the RTC as a wakeup source
The Buffalo Linkstation LS421DE comes with a Ricoh RS5C372A real time clock. This RTC has the INTRA pin connected to the power management circuit, allowing to wake up the device from the power off state when an alarm is scheduled. Add the "wakeup-source" property in the RTC dts node to allow the use of the alarm. Example of use, the device is powered off and it comes to life after 5 minutes: echo $(expr $(date '+%s') + 60 * 5) > /sys/class/rtc/rtc0/wakealarm poweroff This feature isn't available in the stock firmware. Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
Diffstat (limited to 'target')
-rw-r--r--target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts1
1 files changed, 1 insertions, 0 deletions
diff --git a/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts b/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts
index 2a76649ec4..dee271541e 100644
--- a/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts
+++ b/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts
@@ -230,6 +230,7 @@
rs5c372a: rs5c372a@32 {
compatible = "ricoh,rs5c372a";
reg = <0x32>;
+ wakeup-source;
};
};