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authorFaiz Abbas <faiz_abbas@ti.com>2019-04-01 15:58:04 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2019-04-15 12:55:54 +0300
commite374e87538f4c7cd364bce6b9048ad5829ccc604 (patch)
treea0004296e8224632bf68fc376b527b05ff9f980f /drivers/mmc/host/Kconfig
parent3b407b4f3a9273467a6b3d6a640948a739794950 (diff)
downloadlinux-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/Kconfig1
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