Am Fri, 3 Mar 2017 08:19:58 -0800 hat Tony Lindgren tony@atomide.com geschrieben:
Interesting find. Could that have something to do with the weird hangs while booting? Depending on the power usage of the SD Card, it could be that the SD Card you're booting from simply freezes because it doesn't get enough power... so instability might be caused by that. Is that something we need to fix with software or does the hardware need to be changed as well.
Are you seeing hangs during boot on omap5-uevm also or just on pyra?
Right now, Matthijs is mostly the one working on the current-gen Pyra and we haven't tested it extensively before shipping it to him. So the instability could be a faulty hardware. I'll ship out more prototype units next week (also a new one to Matthijs), so maybe it's just that.
However, we have some weird behaviour with reboots and resets where some settings are being remembered, some aren't, etc., and we're currently investigating that.
I don't think the EVM has these issues, but we're using different hardware for the power supply and a different DT-file, so it can't really be compared.