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All devices on i2c on the AM335 SOM
Added by Joseph Orender over 8 years ago
Hello,
I am writing some diagnostic software for our device to run through and make sure everything seems to be present and working on the carrier board. Is there a document on the wiki somewhere that details all the devices on the i2c bus so that I can tickle them while I'm checking the other devices on our carrier as well? I'd like to gather as much info in our health monitoring/diagnostic software as possible and figured it couldnt hurt to make sure everything on the SOM seemed happy.
-Joe
Attached is a dump from i2cdetect on all three buses. 9 and 47 are on our carrier.
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Replies (3)
RE: All devices on i2c on the AM335 SOM - Added by Jonathan Cormier over 8 years ago
I created a wiki page for this information. Let me know if it answers your question.
RE: All devices on i2c on the AM335 SOM - Added by Joseph Orender over 8 years ago
Is there any way I can read the factory config eeprom and use that data to verify the correct SOMs are installed or use the data to compare mac address for example?
-Joe
RE: All devices on i2c on the AM335 SOM - Added by Jonathan Cormier over 8 years ago
The factory config definition can be found here:
http://support.criticallink.com/gitweb/?p=linux-mityarm-335x.git;a=blob;f=arch/arm/mach-omap2/mityarm335x.h;h=5b75f982a46a56056ce71cc0aab38ccb09ee2a28;hb=HEAD
Note: Although we provide a mac address field, the mac address is actually built into the 335x processor so we do not use the field.
You can view the factory config:
root@mitysom-335x ~ $ mount -t debugfs debugfs /sys/kernel/debug/
root@mitysom-335x ~ $ cat /sys/kernel/debug/mitysom335x/module/config
MitySOM-335x: Part Number = 3354-HX-X38-RC
: Serial Num = 137410
: Found MAC = 00:00:00:00:00:00
