diff options
Diffstat (limited to 'drivers/mmc/core/sdio.c')
| -rw-r--r-- | drivers/mmc/core/sdio.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 6889a821c1da..444668c210b2 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -563,10 +563,18 @@ static int mmc_sdio_init_uhs_card(struct mmc_card *card) if (err) goto out; - /* Initialize and start re-tuning timer */ - if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) + /* + * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and + * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. + */ + if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning && + ((card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50) || + (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104))) { + mmc_host_clk_hold(card->host); err = card->host->ops->execute_tuning(card->host, MMC_SEND_TUNING_BLOCK); + mmc_host_clk_release(card->host); + } out: |
