Hi all, I have a question about latency and SDIO, since many laptops don't have a 'gameport' anymore and I want to do realtime IO, I was thinking of making a SDIO GPIO card. I know USB is a no go, if not using buffers for outgoing data ... so SDIO is a desperate mans hope. i need a refresh rate of 10 kHz to 100kHz approximately. Do you think it could handle the latency ? and how much latency would be expected ? Also would it be possible to do sensible interrupts ? I was planning on running in spi mode, basicly registering it as SDIO and then sending spi to and from some chips with spi support. I gather this would need a driver, but does this all sound feasible ? I gather I would try a simple GPIO interface for starters. Ie. interface some SPI controlled chips through SDIO ? and getting low latency. Please CC me as I am not on the list ( yet ) ... I have looked whats in the kernel tree, but it seem's my purpose is a bit different. / best regards, Lars Segerlund. -- 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
