On Saturday 12 February 2011 07:22:20 Chuanxiao Dong wrote: > SDHCI host controller has TRIM/ERASE capability, enable these caps for erasing > purpose. > > ERASE command needs R1B response. So for such command with busy signal, before > sending command, SDHCI host driver will simply set a maximum value for timeout > control register which is safe to use. > > Signed-off-by: Chuanxiao Dong <chuanxiao.dong@xxxxxxxxx> Great stuff! I needed this for a project of mine, but couldn't get it to work reliably without knowing about the timeout logic. I think, almost no mmc controllers advertice MMC_CAP_ERASE today, which is a real shame, given that it's extremely useful for performance. Arnd -- 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
