GTA04 has a W2SG0004 module connected to UART2 of the OMAP3
processor. A GPIO can pulse the on/off toggle switch.
Note that there is no WAKEUP output from the W2SG0004,
hence we can't use the generic SirfStar binding.
The VSIM regulator is used to power on/off the LNA of an
external active GPS antenna so that a driver can turn the
LNA off if GPS is not needed to save battery energy.
Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
---
arch/arm/boot/dts/omap3-gta04.dtsi | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/omap3-gta04.dtsi b/arch/arm/boot/dts/omap3-gta04.dtsi
index 4170be70460e..1c9e1ccf2346 100644
--- a/arch/arm/boot/dts/omap3-gta04.dtsi
+++ b/arch/arm/boot/dts/omap3-gta04.dtsi
@@ -478,6 +478,13 @@
&uart2 {
pinctrl-names = "default";
pinctrl-0 = <&uart2_pins>;
+
+ gps: gps {
+ compatible = "wi2wi,w2sg0004";
+ lna-supply = <&vsim>; /* LNA regulator */
+ /* GPIO_145: trigger for on/off-impulse for w2sg0004 */
+ enable-gpios = <&gpio5 17 GPIO_ACTIVE_HIGH>;
+ };
};
&uart3 {
--
2.12.2
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