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dt-bindings: mmc: sprd: Add another optional clock documentation 

For some Spreadtrum platforms like SC9860 platform, we should enable another
gate clock '2x_enable' to make the SD host controller work well. Thus add
documentation for this optional clock.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Baolin Wang 2019-06-04 16:14:22 +08:00 committed by Ulf Hansson
parent 1d94717ddc
commit 334eb9bcb9
1 changed files with 1 additions and 0 deletions
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Documentation/devicetree/bindings/mmc/sdhci-sprd.txt
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@ -14,6 +14,7 @@ Required properties:
- clock-names: Should contain the following: - clock-names: Should contain the following:
"sdio" - SDIO source clock (required) "sdio" - SDIO source clock (required)
"enable" - gate clock which used for enabling/disabling the device (required) "enable" - gate clock which used for enabling/disabling the device (required)
"2x_enable" - gate clock controlling the device for some special platforms (optional)
Optional properties: Optional properties:
- assigned-clocks: the same with "sdio" clock - assigned-clocks: the same with "sdio" clock