Hi, These are the version 4 patches to implement eMMC4.4 HW reset feature. Host controller can use this feature by trigger RST_n signal. To enable this, byte 162 of EXT_CSD register should be set. HW reset is implemented in mmc core layer and sdhci host layer, and it will be used after each reading/writing/erasing timeout error occures. change-log: This version change the way to detect timeout error conditions. Added a new routine mmc_handle_timeout_error to do this instead to do this in mmc_wait_for_req. Each timeout read/write/erase command can use this routine to do HW reset. patch1: enable HW reset capability if card support. patch2: add two new callback to implement HW reset in mmc core layer. In this patch, routine mmc_handle_timeout_error was added. patch3: implement hardware_reset callback for sdhci host. A new callback reset_emmc was defined which will be each sdhci host controller to implement separately. patch4: did a HW reset after each read/write/erase command. Thanks Chuanxiao -- 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
