Define a binding for the hardware monitoring chip present in the Zyxel
NSA-320 and some of the other Zyxel NAS devices.
Signed-off-by: Adam Baker <linux@xxxxxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
Changes for v3, Add Robs Ack
---
.../devicetree/bindings/hwmon/nsa320-mcu.txt | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/nsa320-mcu.txt
diff --git a/Documentation/devicetree/bindings/hwmon/nsa320-mcu.txt b/Documentation/devicetree/bindings/hwmon/nsa320-mcu.txt
new file mode 100644
index 0000000..7b346d4
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/nsa320-mcu.txt
@@ -0,0 +1,21 @@
+Bindings for the fan / temperature monitor microcontroller used on
+the Zyxel NSA 320 and several subsequent models.
+
+Required properties:
+- compatible : "zyxel,nsa320-mcu"
+- data-gpios : The GPIO pin connected to the data line on the MCU
+- clk-gpios : The GPIO pin connected to the clock line on the MCU
+- act-gpios : The GPIO pin connected to the active line on the MCU
+
+Example:
+
+ hwmon {
+ compatible = "zyxel,nsa320-mcu";
+ pinctrl-0 = <&pmx_mcu_data &pmx_mcu_clk &pmx_mcu_act>;
+ pinctrl-names = "default";
+
+ data-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
+ clk-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
+ act-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
+ };
+
--
2.1.4
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