[PATCH 1/2] gpio: add bindings for TS-4800 gpio controller

[Julien Grossholtz <julien.grossholtz@xxxxxxxxxxxxxxxxxxxx>]

Device tree binding documentation for the TS-4800
GPIO controller.

Signed-off-by: Julien Grossholtz <julien.grossholtz@xxxxxxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/gpio/gpio-ts4800.txt        | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-ts4800.txt

diff --git a/Documentation/devicetree/bindings/gpio/gpio-ts4800.txt b/Documentation/devicetree/bindings/gpio/gpio-ts4800.txt
new file mode 100644
index 0000000..57749f6
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-ts4800.txt
@@ -0,0 +1,21 @@
+* TS-4800 FPGA's GPIO controller bindings
+
+Required properties:
+- compatible: Must be "technologic,ts4800-gpio".
+- #gpio-cells: Should be two. The first cell is the pin number.
+- reg: Physical base address of the controller and length
+       of memory mapped region.
+
+Optional property:
+- ngpios: Number of gpios this controller has. If not set,
+	  the default value (16) is used.
+
+Example:
+
+gpio1: gpio {
+	compatible = "technologic,ts4800-gpio";
+	reg = <0x10020 0x6>;
+	ngpios = <8>;
+	gpio-controller;
+	#gpio-cells = <2>;
+};
-- 
2.5.0

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