From: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
Add device tree bindings document for the GPIO driver of
Juniper's CBC FPGA.
Signed-off-by: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
---
.../devicetree/bindings/gpio/jnx,gpio-cbc.txt | 30 ++++++++++++++++++++++
1 file changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt
diff --git a/Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt b/Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt
new file mode 100644
index 0000000..d205d0b
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt
@@ -0,0 +1,30 @@
+Juniper CBC FPGA GPIO block
+
+Required properties:
+
+- compatible:
+ Must be "jnx,cbc-gpio"
+
+Optional properties:
+
+- reg:
+ Address and length of the register set for the device. This is optional since
+ usually the parent MFD driver fills it in.
+
+- #gpio-cells:
+ Should be <2>. The first cell is the pin number (within the controller's
+ pin space), and the second is used for the following flags:
+ bit[0]: direction (0 = out, 1 = in)
+ bit[1]: init high
+ bit[2]: active low
+
+- gpio-controller:
+ Specifies that the node is a GPIO controller.
+
+Example:
+
+gpio_cbc {
+ compatible = "jnx,gpio-cbc";
+ #gpio-cells = <2>;
+ gpio-controller;
+};
--
1.9.1
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