I've got several Summit+Overo(water) combinations, and I've run into two
instances of the same Summit failure which seem quite odd, and I'd like
some dialog on this.
The two Summit's in question are allowing the Overo to boot completely
if I boot from NAND. However, my intention is to boot only from MMC.
When I try to boot from MMC, I can see it loading UBoot without problem;
I see it loading the compressed Linux kernel, and I see the
decompression process complete. At the end of decompression I see the
message "done, booting the kernel.", but where a regular boot has this
followed up with kernel log spew, the two bad Summits do not seem to go
any further when booting from MMC.
I've swapped out the various components: Summit, Overo, and MMC card,
and the problem always stays with the Summit.
Do you have an idea of what I might be doing to cause this? In each
case, the Summit has previously worked fine for MMC based booting. I'm
using a number of pins from the 40 pin header, and I've been able to use
them flawlessly, so I'm not sure what I may be upsetting. [The pins I'm
using from the header: 1, 2, 9 and 10 for a UART, using a brainstem
RS-232 module; 3, 5, 6 for SPI1 access, 24, 29 and 30 for GPIO access,
and 15 and 16 to power up my 1.8v sensor.]
Is it possible that there's a power draw problem that could lead to
minor damage on the Summit, when my hardware is attached? Can you
recommend measurement steps to determine what to replace on the Summit
to fix this?
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