[PATCH 4/4] gpio: ptxpmb-ext-cpld: Document bindings of PTXPMB extended CPLD

Pantelis Antoniou
2016-10-07T15:19:34Z

From: Georgi Vlaev <gvlaev@juniper.net>

Add device tree bindings document for the GPIO driver of
Juniper's PTXPMB extended CPLD.

Signed-off-by: Georgi Vlaev <gvlaev@juniper.net>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
---
.../bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt

diff --git a/Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt b/Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt
new file mode 100644
index 0000000..87f01b9
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt
@@ -0,0 +1,36 @@
+Juniper PTXPMB extended CPLD GPIO block
+
+Required properties:
+
+- compatible:
+ Must be "jnx,gpio-ptxpmb-ext-cpld"
+
+- #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.
+
+- interrupt-controller:
+ Specifies that the node is an interrupt controller.
+
+Optional properties:
+
+- reg:
+ Address and length of the register set for the device. Usually supplied
+ by the parent MFD device.
+
+
+Example:
+
+gpio_ext_cpld: cpld-ext-gpio {
+ compatible = "jnx,gpio-ptxpmb-ext-cpld";
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+};
--
1.9.1