Hello, I have a Beaglebone black on which I am running latest Debian image.
root@beaglebone:~# cat /etc/os-release PRETTY_NAME="Debian GNU/Linux 9 (stretch)" NAME="Debian GNU/Linux" VERSION_ID="9" VERSION="9 (stretch)" ID=debian HOME_URL="https://www.debian.org/"; SUPPORT_URL="https://www.debian.org/support"; BUG_REPORT_URL="https://bugs.debian.org/"; root@beaglebone:~# uname -a Linux beaglebone 4.4.91-ti-r133 #1 SMP Tue Oct 10 05:18:08 UTC 2017 armv7l GNU/Linux I got the Linux source from here to modify the device trees. https://github.com/beagleboard/linux.git diff --git a/arch/arm/boot/dts/am335x-boneblack-custom.dts b/arch/arm/boot/dts/am335x-boneblack-custom.dts index 0c68a88..a85990d 100644 --- a/arch/arm/boot/dts/am335x-boneblack-custom.dts +++ b/arch/arm/boot/dts/am335x-boneblack-custom.dts @@ -10,10 +10,49 @@ #include "am33xx.dtsi" #include "am335x-bone-common-no-capemgr.dtsi" #include <dt-bindings/board/am335x-bbw-bbb-base.h> +#include <dt-bindings/input/input.h> / { model = "TI AM335x BeagleBone Black"; compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx"; + + gpio-keys { + compatible = "gpio-keys"; + pinctrl-names = "default"; + pinctrl-0 = <&wakeup_gpio_pins>; + + power1 { + label = "CAN1_WakeB"; + gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>; + linux,code = <KEY_WAKEUP>; + debounce-interval = <10>; + wakeup-source; + }; + + power2 { + label = "CAN1_WakeA"; + gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>; + linux,code = <KEY_WAKEUP>; + debounce-interval = <10>; + wakeup-source; + }; + + power3 { + label = "CAN0_WakeB"; + gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>; + linux,code = <KEY_WAKEUP>; + debounce-interval = <10>; + wakeup-source; + }; + + power4 { + label = "CAN0_WakeA"; + gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>; + linux,code = <KEY_WAKEUP>; + debounce-interval = <10>; + wakeup-source; + }; + }; }; &ldo3_reg { @@ -52,6 +91,15 @@ BONE_P9_17 (SLEWCTRL_SLOW | PIN_INPUT_PULLUP | MUX_MODE3) >; }; + + wakeup_gpio_pins: pinmux_wakeup { + pinctrl-single,pins = < + BONE_P8_07 (SLEWCTRL_SLOW | PIN_INPUT_PULLUP | MUX_MODE7) + BONE_P8_11 (SLEWCTRL_SLOW | PIN_INPUT_PULLUP | MUX_MODE7) + BONE_P8_15 (SLEWCTRL_SLOW | PIN_INPUT_PULLUP | MUX_MODE7) + BONE_P8_27 (SLEWCTRL_SLOW | PIN_INPUT_PULLUP | MUX_MODE7) + >; + }; }; After compiling copied it to /boot/dtbs/4.4.91-ti-r133 and added "dtb=am335x-boneblack-custom.dtb". Wake up events seem to be generated which I tested with "evtest" but after initiating suspend with "echo mem > /sys/power/state", wakeup does not happen on any activity on the pin. root@beaglebone:~# evtest No device specified, trying to scan all of /dev/input/event* Available devices: /dev/input/event0: tps65217_pwr_but /dev/input/event1: gpio-keys Select the device event number [0-1]: 1 Input driver version is 1.0.1 Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100 Input device name: "gpio-keys" Supported events: Event type 0 (EV_SYN) Event type 1 (EV_KEY) Event code 143 (KEY_WAKEUP) Properties: Testing ... (interrupt to exit) Event: time 1517912798.523455, type 1 (EV_KEY), code 143 (KEY_WAKEUP), value 0 Event: time 1517912798.523455, -------------- SYN_REPORT ------------ Event: time 1517912799.801348, type 1 (EV_KEY), code 143 (KEY_WAKEUP), value 1 Event: time 1517912799.801348, -------------- SYN_REPORT ------------ Event: time 1517912799.884218, type 1 (EV_KEY), code 143 (KEY_WAKEUP), value 0 Event: time 1517912799.884218, -------------- SYN_REPORT ------------ root@beaglebone:~# echo mem > /sys/power/state [ 2109.821542] PM: Syncing filesystems ... done. [ 2114.060031] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 2114.068922] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 2114.200500] PM: suspend of devices complete after 121.160 msecs [ 2114.210744] PM: late suspend of devices complete after 4.001 msecs [ 2114.221114] PM: noirq suspend of devices complete after 3.858 msecs [ 2114.227715] Disabling non-boot CPUs ... No wakeup here upon any activity on the wakeup pins. Does anyone have an idea? Thanks & Regards, Sanchayan Maity. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/2301cd69-f8bf-4ba2-a268-c2990db85f71%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
