2011/4/11 Kumar Gala <ga...@kernel.crashing.org>: > > On Apr 10, 2011, at 11:43 PM, Jason Liu wrote: > >> Hi, Kumar Gala >> >> 2011/3/22 Jason Liu <jason....@linaro.org>: >>> For freescale i.MX53 eSDHCv2, when using CMD12, cmdtype need >>> to be set to ABORT, otherwise, next read command will hang. >>> >>> This is a software Software Restrictions in i.MX53 reference manual: >>> >>> 29.7.8 Multi-block Read >>> For pre-defined multi-block read operation, that is,the number of blocks >>> to read has been defined by previous CMD23 for MMC, or pre-defined number >>> of blocks in CMD53 for SDIO/SDCombo,or whatever multi-block read without >>> abort command at card side, an abort command, either automatic or manual >>> CMD12/CMD52, is still required by ESDHC after the pre-defined number of >>> blocks are done, to drive the internal state machine to idle mode. In this >>> case, the card may not respond to this extra abort command and ESDHC will >>> get Response Timeout. It is recommended to manually send an abort command >>> with RSPTYP[1:0] both bits cleared. >>> >>> Signed-off-by: Jason Liu <jason....@linaro.org> >>> --- >>> drivers/mmc/fsl_esdhc.c | 4 ++++ >>> 1 files changed, 4 insertions(+), 0 deletions(-) >>> >>> diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c >>> index f3cccbe..5c3618b 100644 >>> --- a/drivers/mmc/fsl_esdhc.c >>> +++ b/drivers/mmc/fsl_esdhc.c >>> @@ -99,6 +99,10 @@ uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data >>> *data) >>> else if (cmd->resp_type & MMC_RSP_PRESENT) >>> xfertyp |= XFERTYP_RSPTYP_48; >>> >>> +#ifdef CONFIG_MX53 >>> + if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION) >>> + xfertyp |= XFERTYP_CMDTYP_ABORT; >>> +#endif >>> return XFERTYP_CMD(cmd->cmdidx) | xfertyp; >>> } >> >> Ping, Any comments? > > No issues as this is protected with a CONFIG_MX53 so will not impact an PPC > SoCs
Thanks. Kumar, Who will pick up this patch? Jason > > - k _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
