Hi, (cc'ing Steve, Richard, Anand) On Thu, 18 Feb 2010, Madhusudhan wrote: > Not to add further confusion but as far as I understand SDIO should be > able to asynchronously wakeup OMAP regardless of MMC clocks being OFF . > As per the SDIO spec DAT1 line is used for signaling the card interrupt > to the host. The TRM clearly shows a GPIO connected to DAT1 line for > wakeup through the SDIO interrupt. Wouldn't this help? Is the integration code in arch/arm/*omap* set to enable wakeup on the DAT1 ball on the OMAP? I don't see any trace of that in the code. That would surely prevent wakeup from succeeding on an off-mode enabled kernel. Sounds like there may be other problems. Why not give it a try with an SDIO card and see if you can get it to work? > Definitely these are good features that are being added. Just that there > are confusions around and not everyone has a setup to validate these > features. Hopefully someone inside TI is validating SDIO wakeup on Linux? > If I look in the mainline kernel today there is only one SDIO card > driver " sdio_uart.c". [paul@twilight current]$ find . -name "*sdio*c" -print | fgrep -v /core/ ./drivers/ssb/sdio.c ./drivers/bluetooth/btsdio.c ./drivers/bluetooth/btmrvl_sdio.c ./drivers/mmc/host/mvsdio.c ./drivers/net/wimax/i2400m/sdio-rx.c ./drivers/net/wimax/i2400m/sdio-tx.c ./drivers/net/wimax/i2400m/sdio.c ./drivers/net/wimax/i2400m/sdio-fw.c ./drivers/net/wireless/iwmc3200wifi/sdio.c ./drivers/net/wireless/libertas/if_sdio.c ./drivers/net/wireless/wl12xx/wl1251_sdio.c ./drivers/net/wireless/b43/sdio.c ./drivers/media/dvb/siano/smssdio.c [paul@twilight current]$ There appear to be least seven SDIO card drivers in 2.6.34-rc7. At least one of these is for a TI chip - the wl1251. I think some of the Gumstix Overo OMAP3 boards are using an SDIO-connected Marvell Libertas: http://www.gumstix.com/store/catalog/product_info.php?products_id=252 David is probably testing with a Bluetooth card - maybe he can comment further. > And at least I don't see a way I can test any of these features myself. Could you clarify? - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
