SD corruption(no suspend and sd_max_clk tested)

Andy Green andy at openmoko.com
Fri Sep 19 12:09:27 CEST 2008


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Somebody in the thread at some point said:

|> How did you do this, from kernel commandline or by changing module
|> parameter after boot completed?

| echo
| cd /sys/module/glamo_mci/parameters
| echo 10000000 > sd_max_clk

I don't think this is enough, the "damage" with not recognizing the card
at boot is done by then.

If you can amend the kernel commandline in U-Boot to have

~ glamo_mci.sd_max_clk=10000000

then the change will have effect from the first time the card is looked
at in Linux and I guess it will work around it.

I just ordered a bunch of 8GB cards to see if I can reproduce this and
finally solve it.

- -Andy
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