diff options
| author | Ryan QIAN <b32804@freescale.com> | 2012-02-21 09:28:50 +0800 |
|---|---|---|
| committer | Ryan QIAN <b32804@freescale.com> | 2012-02-21 09:31:06 +0800 |
| commit | a434c32db29bc69075f397df85a3346ccef0e3c9 (patch) | |
| tree | 7a3cdd4fb175e2a1393b2744c4a36d45a743a449 /drivers/mmc | |
| parent | 25d284df3e005d3b318aae5d3181eb2147992d68 (diff) | |
ENGR00174892 [MX6]MMC: support SD3.0 UHS-I DDR50 mode.
- align UHS-I trial sequence with community that first DDR50
then SDR50.
- escape DDR50 from tuning procedure, only SDR104 will be tuned
so far.
Signed-off-by: Ryan QIAN <b32804@freescale.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/sd.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 52b3171746a5..8fddc550a3c3 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -477,17 +477,17 @@ static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) bus_speed = UHS_SDR104_BUS_SPEED; timing = MMC_TIMING_UHS_SDR104; card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; + } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && + (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { + bus_speed = UHS_DDR50_BUS_SPEED; + timing = MMC_TIMING_UHS_DDR50; + card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50)) { bus_speed = UHS_SDR50_BUS_SPEED; timing = MMC_TIMING_UHS_SDR50; card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; - } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && - (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { - bus_speed = UHS_DDR50_BUS_SPEED; - timing = MMC_TIMING_UHS_DDR50; - card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { @@ -625,7 +625,8 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card) /* SPI mode doesn't define CMD19 */ #ifdef CONFIG_MMC_SDHCI_ESDHC_IMX - if (!mmc_host_is_spi(card->host)) { + if (!mmc_host_is_spi(card->host) && + (card->sd_bus_speed == UHS_SDR104_BUS_SPEED)) { int min, max, avg; min = card->host->tuning_min; |