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@goldelico.com --- 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 {