[PATCH v7 3/6] DTS: gta04: add uart2 child node for w2sg0004 GPS receiver

[H. Nikolaus Schaller]

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