2010/9/3 梁亦飞 <dinux...@gmail.com>: > Hi , > This might be a stupid question, in <<Physical Layer Simplified > Specification Version 2.00>>,there is a command SET_CLR_CARD_ > DETECT, as spec discribed Connect[1]/Disconnect[0] the 50 KOhm pull-up > resistor on CD/DAT3 (pin 1) of > the card. > If this command is use to switch the card beteewn the DAT[3] and > CD mode, why i don't see it's being > use in kernel. Under what circumstance we should use this command?
The pullup is disabled for SDIO part, but not for memory part. I would call it a bug. This should go to mmc_sd_setup_card() in sd.c. I'll send a fix after I get my dev machine up, unless someone beats me to it. Best Regards, Michał Mirosław -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
