On Mon, Oct 03, 2005 at 04:54:45PM +0300, Jarkko Lavinen wrote:
> So far, the problem occured only on ATP and Transcend cards when the card
> have already been detected and then mmc_detect_change() is called to
> check if any new cards have been inserted. After CMD2 the next card
> select command CMD7 fails due to illegal command error.
I'm not surprised. CMD2 is part way through the initialisation
sequence, so no one should be sending a CMD7.
After a CMD2, the next expected command is a CMD3 for MMC cards (maybe
not SD cards).
Given the code, I don't see how you can possibly be sending a CMD7
before the initialisation has completed. You need to find out why
a CMD7 is being sent after CMD2.
> I got rid of the problem by simply adding call to mmc_check_cards()
> at and of mmc_setup() function, which is perhaps an overkill. One could do
> it also in mmc_rescan() after switching back to higher clock.
This is not a fix.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
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