Add documentation for the optional #syscon-cells property to determine
the number of cells that should be given in the phandle while
referencing the syscon-node.

Suggested-by: Rob Herring <[email protected]>
Signed-off-by: Kishon Vijay Abraham I <[email protected]>
---
 Documentation/devicetree/bindings/mfd/syscon.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/syscon.txt 
b/Documentation/devicetree/bindings/mfd/syscon.txt
index 408f768686f1..446b47e8fb71 100644
--- a/Documentation/devicetree/bindings/mfd/syscon.txt
+++ b/Documentation/devicetree/bindings/mfd/syscon.txt
@@ -16,6 +16,8 @@ Required properties:
 Optional property:
 - reg-io-width: the size (in bytes) of the IO accesses that should be
   performed on the device.
+- #syscon-cells: determine the number of cells that should be given in the
+  phandle while referencing this syscon-node.
 
 Examples:
 gpr: iomuxc-gpr@020e0000 {
-- 
2.11.0

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