On Mon 02 January 2017 21:01:01 Pali Rohár wrote: > On Monday 02 January 2017 19:49:45 Aaro Koskinen wrote: > > The schematic shows ECI(5:0), but only 3 are connected/used. There > > were 3 other GPIOs reserved but not used in the final product. > > Are you sure that this is truth (maybe you have some information)? Or > you just looked at schematic and deduced this observation (as other > people too)? > > Joerg already told us that RX51 schematic does not 100% match production > N900 and e.g. there is missing UART3 pins... We found this, see https://irclog.whitequark.org/neo900/2017-01-01 (has a lot of possibly useful references/links) The question is if pin AA3 aka GPIO_178 is actually NotConnected in N900 or it's just an omission in schematics and there's actually some more 'stealth hardware' in N900 that doesn't show up in docs, just like the testpoint UART console http://wiki.maemo.org/N900_Hardware_Hacking#Debug_ports which also are missing in schematics. > What we know that gpio 178 is *already* controlled and changed by > production Nokia kernel running on production N900 devices (as I wrote > in first email). I could use one of the unpopulated N900 PCB and solder a wire to the OMAP AA3 pad, then try to make sure it's not connected to anything, or if it is then find out about the details of this. But I'm reluctant to do this, since it's an error prone and (in case of N/C) not verifiable procedure, so I'd appreciate any further info, whether from historical anecdote or from sourcecode review and conclusions, regarding that. cheers jOERG -- () ascii ribbon campaign /\ against html e-mail - against proprietary attachments http://www.georgedillon.com/web/html_email_is_evil.shtml http://www.nonhtmlmail.org/campaign.html http://www.georgedillon.com/web/html_email_is_evil_still.shtml http://www.gerstbach.at/2004/ascii/ (German)
Attachment:
signature.asc
Description: This is a digitally signed message part.
