arm: vt8500: doc: Add device tree bindings for arch-vt8500 devices

Bindings for gpio, interrupt controller, power management controller,
timer, realtime clock, serial uart, ehci and uhci controllers and
framebuffer controllers used on the arch-vt8500 platform.

Framebuffer binding also specifies a 'display' node which is required
for determining the lcd panel data.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>

1 files changed, 24 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/gpio/gpio-vt8500.txt b/Documentation/devicetree/bindings/gpio/gpio-vt8500.txt
new file mode 100644
index 000000000000..f4dc5233167e
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-vt8500.txt
@@ -0,0 +1,24 @@
+VIA/Wondermedia VT8500 GPIO Controller
+-----------------------------------------------------
+
+Required properties:
+- compatible : "via,vt8500-gpio", "wm,wm8505-gpio"
+	or "wm,wm8650-gpio" depending on your SoC
+- reg : Should contain 1 register range (address and length)
+- #gpio-cells : should be <3>.
+	1) bank
+	2) pin number
+	3) flags - should be 0
+
+Example:
+
+	gpio: gpio-controller@d8110000 {
+		compatible = "via,vt8500-gpio";
+		gpio-controller;
+		reg = <0xd8110000 0x10000>;
+		#gpio-cells = <3>;
+	};
+
+	vibrate {
+		gpios = <&gpio 0 1 0>; /* Bank 0, Pin 1, No flags */
+	};