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Commit 152f05c7 authored by Dong Aisheng's avatar Dong Aisheng Committed by Ulf Hansson
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doc: dt: fsl-imx-esdhc: add set tuning start point binding 



add tuning start point binding

Signed-off-by: default avatarDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent d87fc966

Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt

+2 −0
Original line number Diff line number Diff line
@@ -28,6 +28,8 @@ 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-start-tap: Specify the start dealy cell point when send first CMD19

  in tuning procedure.

- 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