Hi Askarus,
Am 01.10.2018 um 19:45 schrieb Nino Bock askarus@openpandora.org:
Hello everyone,
in the forums EvilDragon said: "4GB RAM boards were working with only 2GB RAM enabled (as far as I remember - as that was the reason I ordered the RAM modules back then!)"
Did anyone with a 4GB Pyra try running it with only 2GB enabled?
Yes. We did that several times. Sometimes even unplanned (copying a non-LPAE kernel to the SD card).
Might it work if we only populate it with half the amount of RAM chips?
Unlikely. There are two separate busses from OMAP5 to 2 RAM chips each. So if one bus makes trouble it still will do if the other one is not used.
The only differences may be power demand and cross-talk.
These are important questions. If one of these options does actually work it will be fine for the first batch.
Of course it's better to fix things but we are at a state where we should start production as soon as possible. Either of these possibilities would bring some Pyras to life and be of no additional cost.
Maybe that's silly but if there is a chance that EvilDragon's memories are true, then for me it's obvious what to do.
BR, Nikolaus