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SubjectRe: [PATCH 0/4] Add driver for globaltop GNSS receivers
Date

As suggested by Neil Armstrong - this GNSS device seems to behave
like
most generic GNSS receivers.
I'll send a v2 with a generic driver that works for both GlobalTop
and
u-blox.

Please ignore this serie.

Thanks,

Loys

Loys Ollivier writes:

> Hello !
>
> This patch series adds a new GNSS driver for the globaltop GNSS
> receivers.
> These receivers transmits NMEA output sequence as soon as they
> have booted.
> Power management can be done via the main supply and optional
> backup supply
> as defined in the device tree.
>
> The driver has been tested using a GlobalTop pa6h chipset on a
> Libretech-cc
> board using the expansion header. Changes made in the board
> device tree can
> be found below for reference and testing.
>
> Loys
>
> Loys Ollivier (4):
> dt-bindings: Add vendor prefix for "GlobalTop Technology,
> Inc."
> dt-bindings: gnss: add gtop binding
> gnss: add gtop receiver type support
> gnss: add driver for globaltop receivers
>
> Documentation/devicetree/bindings/gnss/gtop.txt | 33 +++++
> .../devicetree/bindings/vendor-prefixes.txt | 1 +
> drivers/gnss/Kconfig | 13 ++
> drivers/gnss/Makefile | 3 +
> drivers/gnss/core.c | 1 +
> drivers/gnss/gtop.c | 152
> +++++++++++++++++++++
> include/linux/gnss.h | 1 +
> 7 files changed, 204 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/gnss/gtop.txt
> create mode 100644 drivers/gnss/gtop.c
>
> ---
> diff --git
> a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
> b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
> index 90a56af967a7..3b3d4dcc47aa 100644
> ---
> a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
> +++
> b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
> @@ -17,6 +17,7 @@
>
> aliases {
> serial0 = &uart_AO;
> + serial1 = &uart_A;
> ethernet0 = &ethmac;
> };
>
> @@ -269,7 +270,20 @@
> pinctrl-names = "default";
> };
>
> +/* This is brought out on the UART_A_TX (8) and UART_A_RX (10)
> pins: */
> +&uart_A {
> + status = "okay";
> + pinctrl-0 = <&uart_a_pins>;
> + pinctrl-names = "default";
> +
> + gnss {
> + compatible = "globaltop,pa6h";
> + v-bckp-supply = <&vcc_3v3>;
> + vcc-supply = <&vcc_3v3>;
> + current-speed = <9600>;
> + };
> +};
> +
> &usb0 {
> status = "okay";
> };


--
-L

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