diff options
| author | Haibo Chen <haibo.chen@freescale.com> | 2015-08-11 19:38:28 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@nxp.com> | 2016-01-14 11:00:17 -0600 |
| commit | c3407769031b3be0a85de586dc52ce72cf955311 (patch) | |
| tree | b529d1ded314a8f5427dd4a55ea7aea1a3356872 /Documentation/devicetree | |
| parent | ba0942fef235b922cc4e41c216ec0c0c0ceb1077 (diff) | |
mmc: sdhci-esdhc-imx: Document new DT bindings for imx7d support
Add a required property "fsl,imx7d-usdhc" in binding doc.
Add an optional property "fsl,tuning-step" in binding doc.
Signed-off-by: Haibo Chen <haibo.chen@freescale.com>
Acked-by: Dong Aisheng <aisheng.dong@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
(cherry picked from commit 2a2a7ea7c0126d388c14c28927cdba429b4858dd)
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt index 211e7785f4d2..dca56d6248f5 100644 --- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt +++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt @@ -15,6 +15,7 @@ Required properties: "fsl,imx6q-usdhc" "fsl,imx6sl-usdhc" "fsl,imx6sx-usdhc" + "fsl,imx7d-usdhc" Optional properties: - fsl,wp-controller : Indicate to use controller internal write protection @@ -27,6 +28,11 @@ Optional properties: transparent level shifters on the outputs of the controller. Two cells are required, first cell specifies minimum slot voltage (mV), second cell specifies maximum slot voltage (mV). Several ranges could be specified. +- fsl,tuning-step: Specify the increasing delay cell steps in tuning procedure. + The uSDHC use one delay cell as default increasing step to do tuning process. + This property allows user to change the tuning step to more than one delay + cells which is useful for some special boards or cards when the default + tuning step can't find the proper delay window within limited tuning retries. Examples: |