We're using the IceSTORM as an element of our system and have recently run across some Gumstix that seem to have an issue with the USB host port (which we tie via our custom carrier card to a Microchip SMSC7500 USB/Ethernet part with
great success). Some, not all, IceSTORM modules come up and don't see the USB/Ethernet. If we switch to another Gumstix, the new one might see it just fine. I have two IceSTORMs on my bench now that exhibit this issue (both GS3703WE-R3952). Oddly,
one of these two is completely missing IC1 for some reason, but neither has a functional USB/Ethernet. I happen to have an older Gumstix (GS3703W-R3950) which works great on the same carrier with same boot media.
Are there any deltas between R3950 and R3952 that may have impacted the USB pins? Inspecting the boards yields nothing obvious except the one that's missing IC1.
Your thoughts are welcome as the non-working boards are starting to pile up here and we have a large order to get out the door. Thanks.
If you have an complete image (with MLO, kernel, RFS, etc.) that I can dd to a microSD I could try it but not sure what that would tell you as the USB pins in question would not expect to see the hardware we have tied to them in our design. What would you want me to do with a plain vanilla platform booting from the microSD?
From: Andrew C. Smith [mailto:[hidden email]]
Sent: Thursday, February 02, 2017 2:18 PM
To: [hidden email] Subject: Re: [Gumstix-users] IceSTORM Revision Question
Could you please try running some of our stock software:
I wanted to add one important note to this posting - the original problem with our USB was thought to possibly be due to a revision to our IceSTORM module hardware (as noted in the original post). The revision mismatch has since proven to be a bad comparison (on my part) between revisions of a WaterSTORM and IceSTORM module (they look identical to my naked eye). Celine at Gumstix has confirmed that the IceSTORM module has not been revised since it first went into production. Meanwhile, we continue to have issues with USB pins on some modules and are investigating that here and with Gumstix.