Is it possible to power the OpenWrt One with 12V via USB-C without power delivery handshake or do i have to feed the 12V into VDD-SYS via a diode like it is done with VDD-POE ?
Why ? I'm currently in the process of replacing all my private access points (8 ath79 in total) with OpenWrt One's and 3 of them are supplied via a 12V switching regulator from a 24V or 48V solar system.
Thx
when i read the schematics correctly, the USB-C power is directly connected to A_VBUS and A_VBUS is connected via Q4/5 to VDD-SYS as long as there is no POE. U4 (CH224K) should only communicate via USB to request 15V (56K on CFG1).
So it should work. I only what to make sure so i will not damage one of my One's.
Had an issue last week where another user needed the PD handshake, otherwise the Openwrt One would reboot when trying to activate the 5Ghz radio.
FYI, I have now 2 of my openWrtOne powered with 12V via USB-C and they are working fine. I also had a boot loop trying to power it using an USB-C power supply not supporting the requested 15V and falling back to 5V.
So to finally answer my own question: 12V via USB-C directly works fine
Another user has killed their One with a 65w gan fast charger.
Thanks for confirming 12v works.
Yep, because powering a router with usb-c is retarted and makes more problems than benefits 
yeah, deal with it.