From a6bf474cda4cb5239cacc44bc57f4528f2a2da37 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 25 Apr 2022 15:22:15 +0200 Subject: dt-bindings: gnss: Add Broacom BCM4751 family bindings 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@vger.kernel.org Cc: phone-devel@vger.kernel.org Signed-off-by: Linus Walleij Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20220425132215.1309216-1-linus.walleij@linaro.org --- .../devicetree/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..e62b30386ac2 --- /dev/null +++ b/Documentation/devicetree/bindings/gnss/brcm,bcm4751.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%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 + - Linus Walleij + +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 + 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>; + }; + }; -- cgit v1.2.3-59-g8ed1b