We are working on an application where low power is critical. By turning of display (/sys/class/graphics/fb0/blank) and a bunch of other settings we are able to bring down the idle power consumption on Ixora (without the CAN trancivers) to something around 148mA at 12V.
Once is this state, we successfully put the TK1 into LP1. And after a few second woke it up using a Wake-on-LAN.
The interesting thing we found is that the current draw goes back to up 168mA instead of 148mA once the TK1 was woken up. It almost feels like some peripheral ends up in a different state after waking up from LP1. Any ideas what could be drawing the extra 20mA?
Here is a kernel log (taken from UART1) during a LP1/Wakeup sequence using RTC interrupt.