Add bindings documentation for Wi2Wi W2SG0004 GPS module.
This is a quite old module which does not support a WAKEUP
line and hence can't use a generic SirfStar driver.
Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
.../devicetree/bindings/gnss/wi2wi,w2sg0004.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gnss/wi2wi,w2sg0004.txt
diff --git a/Documentation/devicetree/bindings/gnss/wi2wi,w2sg0004.txt b/Documentation/devicetree/bindings/gnss/wi2wi,w2sg0004.txt
new file mode 100644
index 000000000000..ac4ec479ea98
--- /dev/null
+++ b/Documentation/devicetree/bindings/gnss/wi2wi,w2sg0004.txt
@@ -0,0 +1,23 @@
+Wi2Wi W2SG0004 GPS module connected through UART
+
+Should be a subnode of the SoC UART it is connected to.
+
+Required properties:
+- compatible: must be
+ "wi2wi,w2sg0004"
+- enable-gpio: the GPIO that controls the module's power toggle
+ input. A positive impulse of sufficent length toggles the
+ power state.
+
+Optional properties:
+- lna-supply: an (optional) LNA regulator that is enabled together with the GPS receiver
+
+Example:
+
+&uart2 {
+ w2sg0004: gps {
+ compatible = "wi2wi,w2sg0004";
+ lna-supply = <&vsim>; /* LNA regulator */
+ enable-gpios = <&gpio5 17 GPIO_ACTIVE_HIGH>; /* GPIO_145: trigger for turning on/off w2sg0004 */
+ };
+};
--
2.12.2
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