diff options
| author | Faiz Abbas <faiz_abbas@ti.com> | 2019-04-01 15:58:04 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-04-15 12:55:54 +0300 |
| commit | e374e87538f4c7cd364bce6b9048ad5829ccc604 (patch) | |
| tree | a0004296e8224632bf68fc376b527b05ff9f980f /drivers/mmc/host/Kconfig | |
| parent | 3b407b4f3a9273467a6b3d6a640948a739794950 (diff) | |
| download | linux-e374e87538f4c7cd364bce6b9048ad5829ccc604.tar.xz | |
mmc: sdhci_am654: Clear HISPD_ENA in some lower speed modes
According to the AM654x Data Manual[1], the setup timing in lower speed
modes can only be met if the controller uses a falling edge data launch.
To ensure this, the HIGH_SPEED_ENA (HOST_CONTROL[2]) bit should be
cleared in default speed, SD high speed, MMC high speed, SDR12 and SDR25
speed modes.
Use the sdhci writeb callback to implement this condition.
[1] http://www.ti.com/lit/gpn/am6546 Section 5.10.5.16.1
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/Kconfig')
| -rw-r--r-- | drivers/mmc/host/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index de7a38dab2aa..9c01310a0d2e 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -994,6 +994,7 @@ config MMC_SDHCI_OMAP config MMC_SDHCI_AM654 tristate "Support for the SDHCI Controller in TI's AM654 SOCs" depends on MMC_SDHCI_PLTFM && OF + select MMC_SDHCI_IO_ACCESSORS help This selects the Secure Digital Host Controller Interface (SDHCI) support present in TI's AM654 SOCs. The controller supports |