WP Groups from SD (Secure Digital) cards

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dpsman

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Has anybody successfully used CMD28,CMD29,CMD30 command from a SD card?

I'am having trouble performing a full erase command ( I get a WP ERASE SKIP flag from status). I've tried clearing WP bits with no results,

Your help will be highly appreciated!,

Regards,

dp
 

I am writing SD driver for OMAP5912, but I found 4-bit mode is hard to debug.
So far, I am using 1bit mode.
 

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