On Mon, Dec 14, 2015 at 10:24 AM, Yang, York <weijuny@xxxxxxxxxxxxxxxx> wrote: > Hi, Carlo > > I don't think so. You may check the 9faac7b95, there are two changes in sd.c and sdhc.c. > Surely the change in sdhc.c will not affect ASUS X205TA (bcm43341) since it is a SDIO device. > Actually the calling sequence is this: mmc_sd_init_uhs_card() calls sdhci_execute_tuning(). In 9faac7b95, I enabled tuning for DDR50 in these two functions. > If your function calling sequence is mmc_sdio_init_uhs_card()->sdhci_execute_tuning(), the tuning will not carried out, since you didn't enable tuning for DDR50 in mmc_sdio_init_uhs_card(). > Unless you call sdhci_execute_tuning directly, the tuning command may go through be sent out. Hi Yang, On the unmodified master what I see is: - mmc_sdio_init_uhs_card() is called - card->sw_caps.sd3_bus_mode is 0x14 - card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50 is actually verified (even though the tuning for DDR50 is not enabled) - mmc_execute_tuning() is actually called -- Carlo Caione -- 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
