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Message-ID: <Yl77YPzpjT0hLNRN@robh.at.kernel.org>
Date: Tue, 19 Apr 2022 13:11:44 -0500
From: Rob Herring <robh@...nel.org>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Johan Hovold <johan@...nel.org>, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: gnss: Add Broacom BCM4751 family bindings
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@...r.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> .../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@...nel.org>
> + - Linus Walleij <linus.walleij@...aro.org>
> +
> +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
>
>
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