On Thu, Sep 22, 2011 at 04:43:40PM +0530, Girish K S wrote: > This patch adds the support of the HS200 bus speed for > eMMC 4.5 devices. > The eMMC 4.5 devices have support for 200MHz bus speed. > The mmc core and host modules have been touched to add support > for this module. > It is necessary to know the card type in the sdhci.c file to > add support for eMMC tuning function. So card.h file is included > to import the card data structure. > > Signed-off-by: Girish K S <girish.shivananjappa@xxxxxxxxxx> > --- > v1: > cases which produce same result have been combined to reduce > repeated assignments. patch recreated after rebase to chris > balls mmc-next branch. Your patch does not apply to mmc-next tree... > > @@ -1661,7 +1663,10 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) > if (!tuning_loop_counter && !timeout) > break; > The sdhci_execute_tuning will not proceed here unless the ctrl register indicates the host is running at UHS_SDR104 or UHS_SDR50 with SDHCI_SDR50_NEEDS_TUNING flag set. Does your host also reflect this when running at 200Mhz bus speed? > - cmd.opcode = MMC_SEND_TUNING_BLOCK; > + if (mmc->card->type == MMC_TYPE_MMC) > + cmd.opcode = MMC_SEND_TUNING_BLOCK_HS200; > + else > + cmd.opcode = MMC_SEND_TUNING_BLOCK; > cmd.arg = 0; > cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; > cmd.retries = 0; -- 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
