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@goldelico.com Acked-by: Rob Herring robh@kernel.org --- .../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 */ + }; +};