Linux/AM5706: wakeup from GPIO

Michael Shklyarman

Part Number: AM5706

Tool/software: Linux

Champs,

the wiki article explains how to wake up the CPU from UART: http://processors.wiki.ti.com/index.php/Linux_Core_Power_Management_User%27s_Guide_(v4.4)#Idle_Power_Management

over 8 years ago

0 Michael Shklyarman over 8 years ago

TI__Genius 12760 points

... customer needs to be able to wake up the CPU from GPIO. I believe silicon supports it, the question is if it is supported in Linux and if yes how to do it.
thanks
Michael

0 Rogerio Almeida over 8 years ago in reply to Michael Shklyarman

TI__Mastermind 26215 points

Michael, team will reply here...

0 Pavel Botev over 8 years ago in reply to Michael Shklyarman

TI__Guru**** 170625 points

Michael,

You should use "gpio-key,wakeup" entry in DTS. See the below pointers for more info:

e2e.ti.com/.../572939
e2e.ti.com/.../2013983

linux-4.4.41/drivers/input/keyboard/gpio_keys.c
linux-4.4.41/drivers/input/keyboard/gpio_keys_polled.c

linux-4.4.41/Documentation/gpio/drivers-on-gpio.txt
linux-4.4.41/Documentation/devicetree/bindings/input/gpio-keys-polled.txt
linux-4.4.41/Documentation/devicetree/bindings/input/gpio-keys.txt
linux-4.4.41/Documentation/devicetree/bindings/power/wakeup-source.txt

linux-4.4.41/arch/arm/boot/dts/am335x-evm.dts

Regards,
Pavel

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Linux/AM5706: wakeup from GPIO