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Commit fca0c330 authored by Shawn Lin's avatar Shawn Lin Committed by Ulf Hansson
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dt-bindings: rockchip-dw-mshc: add optional rockchip, desired-num-phases 



By default, dw_mmc-rockchip will execute tuning for each degree.
So we won't miss every point of the good sample windows. However,
probably the phases are linear inside the good sample window.
Actually we don't need to do tuning for each degree so that we could
save some time, for instance, probe the driver or resume from S3.

Signed-off-by: default avatarShawn Lin <shawn.lin@rock-chips.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 2fe35968

Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt

+4 −0
Original line number Diff line number Diff line
@@ -32,6 +32,10 @@ Optional Properties: 
  probing, low speeds or in case where all phases work at tuning time.

  If not specified 0 deg will be used.



* rockchip,desired-num-phases: The desired number of times that the host

  execute tuning when needed. If not specified, the host will do tuning

  for 360 times, namely tuning for each degree.



Example:



	rkdwmmc0@12200000 {