dt-bindings: mfd: aspeed-lpc: Make parameter optional

Memory-region and flash phandle is not a required parameter, it is
optional to describe in device tree and needed only use basis.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
index 34dd89087cff09d0fdd26ebe1cc4fbf9c7c43928..86446074e206dd2221881ced880815e4bf759f95 100644 (file)
--- a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
+++ b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
@@ -135,6 +135,8 @@ Required properties:
 - clocks:      contains a phandle to the syscon node describing the clocks.
                There should then be one cell representing the clock to use
 
+Optional properties:
+
 - memory-region: A phandle to a reserved_memory region to be used for the LPC
                to AHB mapping