On Thu, Apr 14, 2022 at 11:43:37PM +0200, Linus Walleij wrote: > The Broadcom BCM4751 family of (A-)GPS chips have been around for > some years. The latest iteration BCM4753 is for example mounted > on the Huawei HiKey970. > > Cc: devicetree@xxxxxxxxxxxxxxx > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > --- > .../bindings/gnss/brcm,bcm4751.yaml | 69 +++++++++++++++++++ > 1 file changed, 69 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gnss/brcm,bcm4751.yaml > > diff --git a/Documentation/devicetree/bindings/gnss/brcm,bcm4751.yaml b/Documentation/devicetree/bindings/gnss/brcm,bcm4751.yaml > new file mode 100644 > index 000000000000..f06a4acf21cf > --- /dev/null > +++ b/Documentation/devicetree/bindings/gnss/brcm,bcm4751.yaml > @@ -0,0 +1,69 @@ > +# SPDX-License-Identifier: GPL-2.0 Dual license. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/gnss/brcm,bcm4751.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Broadcom BCM4751 family GNSS Receiver Device Tree Bindings > + > +maintainers: > + - Johan Hovold <johan@xxxxxxxxxx> > + - Linus Walleij <linus.walleij@xxxxxxxxxx> > + > +description: > + Broadcom GPS chips can be used over the UART or I2C bus. The UART > + bus requires CTS/RTS support. The number of the capsule is more > + elaborate than the compatibles BCM4751 may be printed > + BCM4751IFBG for example. > + > +allOf: > + - $ref: gnss-common.yaml# > + > +properties: > + compatible: > + enum: > + - brcm,bcm4751 > + - brcm,bcm4752 > + - brcm,bcm4753 > + > + reg: > + description: > + The I2C Address, not required on UART buses. > + > + vdd-auxin-supply: > + description: > + Main voltage supply, pin name VDD_AUXIN, typically connected > + directly to a battery such as LiIon 3.8V battery or a 2.6V supply. > + > + vddio-supply: > + description: > + IO voltage supply, pin name VDDIO, typically 1.8V > + > + reset-gpios: > + maxItems: 1 > + description: An optional active low reset line, should be flagged with > + GPIO_ACTIVE_LOW. > + > + enable-gpios: > + description: Enable GPIO line, connected to pins named REGPU or NSTANDBY. > + If the line is active low such as NSTANDBY, it should be tagged > + GPIO_ACTIVE_LOW. > + > +required: > + - compatible > + - enable-gpios > + > +unevaluatedProperties: false > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + serial { > + gnss { > + compatible = "brcm,bcm4751"; > + vdd-auxin-supply = <&vbat>; > + reset-gpios = <&gpio0 15 GPIO_ACTIVE_LOW>; > + enable-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>; > + current-speed = <38400>; > + }; > + }; > -- > 2.35.1 > >
