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Subject[PATCH v2 2/9] 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 <>
.../devicetree/bindings/mmc/sdhci-sprd.txt | 1 +
1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt b/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt
index 45c9978..a285c77 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt
@@ -14,6 +14,7 @@ Required properties:
- clock-names: Should contain the following:
"sdio" - SDIO source clock (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:
- assigned-clocks: the same with "sdio" clock
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