PaulMorrison

Hi, Im trying to modify the configuration of AXP209 in the A20-SOM204 to change the behavior of long and short press time to make a long press shutdown the board and a short press wake up, following the datasheet: http://dl.linux-sunxi.org/AXP/AXP209_Datasheet_v1.0en.pdf and trying with the register: https://linux-sunxi.org/AXP209#REG_36H:_PEK_key_parameter_settings but with not success. To wake up the board from standby we are simulating a POWER press as a response to an external signal rise up, but we need to NOT shutdown the board when it is already ON when this signal rise up, but after trying to change the AXP209 parameters, still, any instant press of POWER shutdown the board. Is this possible with some tweak in the AXP209 configuration? If not... there is some other way to prevent armbian to shutdown at power press?

This is what I was looking for, thanks. I really need to implement this for mainline, has anyone any clue, advice/tip ? Any alternative to wake up from suspend/hibernate would be usefull as well

I'm using Armbian_5.41_Olimex-som-a20_Debian_stretch_next_4.14.40 i will post armbianmonitor -u later, need to fix something first but I can try attach armhwinfo.log if that helps standby ok, but i was able to do it in legacy without implementing anything

I am making some testing over A20-SOM from Olimex. I have a signal connected to NMI_N pin and with a legacy distribution, with power_start=0 on FEX, I am able to poweroff the board from command line (while the board is still powered) and then poweron/weakup the board raising up the signal on NMI_N. However, I need to do this on an armbian mainline distribution. I poweroff the board from command line (but keep the board powered), the PWR_LED keeps turn on and the board should wakeup when I turn on the signal on NMI_N and it does on my legacy distribution but not in armbian. Has anyone any clue, advice/tip to make this work in armbian? I really don't know where to start. if this helps, here are the docs of A20-SOM and AXP209: http://dl.linux-sunxi.org/AXP/AXP209_Datasheet_v1.0en.pdf https://www.olimex.com/Products/SOM/A20/A20-SOM/resources/A20-SOM-user-manual.pdf Many thanks for considering my request!