Input: ad7879 - add SPI device tree binding example

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/Documentation/devicetree/bindings/input/touchscreen/ad7879.txt b/Documentation/devicetree/bindings/input/touchscreen/ad7879.txt
index 323b6098be19191238d71e158c9c6b0aea7351ff..3c8614c451f265558175cae62cf10e4016301d0e 100644 (file)
--- a/Documentation/devicetree/bindings/input/touchscreen/ad7879.txt
+++ b/Documentation/devicetree/bindings/input/touchscreen/ad7879.txt
@@ -52,3 +52,21 @@ Example:
                adi,averaging = /bits/ 8 <1>;
                adi,conversion-interval = /bits/ 8 <255>;
        };
+
+       ad7879@1 {
+               compatible = "adi,ad7879";
+               spi-max-frequency = <5000000>;
+               reg = <1>;
+               spi-cpol;
+               spi-cpha;
+               gpio-controller;
+               interrupt-parent = <&gpio1>;
+               interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+               touchscreen-max-pressure = <4096>;
+               adi,resistance-plate-x = <120>;
+               adi,first-conversion-delay = /bits/ 8 <3>;
+               adi,acquisition-time = /bits/ 8 <1>;
+               adi,median-filter-size = /bits/ 8 <2>;
+               adi,averaging = /bits/ 8 <1>;
+               adi,conversion-interval = /bits/ 8 <255>;
+       };