[PATCH 1/2] gpio: dt-bindings: add mcp23018 to mcp23s08 documentation

[Phil Reid <preid@xxxxxxxxxxxxxxxxx>]

This adds the required definitions for the mcp23018 which is the i2c
variant of the mcp23s18.

Signed-off-by: Phil Reid <preid@xxxxxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt b/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
index c934106..c0f495e 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
@@ -13,6 +13,7 @@ Required properties:
     - "microchip,mcp23s18" for 16 GPIO SPI version
     - "microchip,mcp23008" for  8 GPIO I2C version or
     - "microchip,mcp23017" for 16 GPIO I2C version of the chip
+    - "microchip,mcp23018" for 16 GPIO SPI version
     NOTE: Do not use the old mcp prefix any more. It is deprecated and will be
     removed.
 - #gpio-cells : Should be two.
-- 
1.8.3.1

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