linux-kernel - Re: [PATCH v2 2/3] dt-bindings: net: bluetooth: Convert to DT schema

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Message-ID: <20210421171009.GA1300559@robh.at.kernel.org>
Date:   Wed, 21 Apr 2021 12:10:09 -0500
From:   Rob Herring <robh@...nel.org>
To:     Venkata Lakshmi Narayana Gubba <gubbaven@...eaurora.org>
Cc:     marcel@...tmann.org, johan.hedberg@...il.com,
        devicetree@...r.kernel.org, mka@...omium.org,
        linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        hemantg@...eaurora.org, linux-arm-msm@...r.kernel.org,
        bgodavar@...eaurora.org, rjliao@...eaurora.org,
        hbandi@...eaurora.org, abhishekpandit@...omium.org
Subject: Re: [PATCH v2 2/3] dt-bindings: net: bluetooth: Convert to DT schema

On Tue, Apr 20, 2021 at 09:56:49PM +0530, Venkata Lakshmi Narayana Gubba wrote:
> Converted Qualcomm Bluetooth binidings to DT schema.
> 
> Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@...eaurora.org>
> ---
>  .../devicetree/bindings/net/qualcomm-bluetooth.txt | 69 -----------------
>  .../bindings/net/qualcomm-bluetooth.yaml           | 87 ++++++++++++++++++++++
>  2 files changed, 87 insertions(+), 69 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
>  create mode 100644 Documentation/devicetree/bindings/net/qualcomm-bluetooth.yaml

> diff --git a/Documentation/devicetree/bindings/net/qualcomm-bluetooth.yaml b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.yaml
> new file mode 100644
> index 0000000..55cd995
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.yaml
> @@ -0,0 +1,87 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/qualcomm-bluetooth.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Bluetooth Chips
> +
> +maintainers:
> +  - Rob Herring <robh@...nel.org>
> +  - Marcel Holtmann <marcel@...tmann.org>

This should be someone that knows and cares about this h/w. I don't.

> +
> +description:
> +  This binding describes Qualcomm UART-attached bluetooth chips.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,qca6174-bt
> +      - qcom,qca9377-bt
> +      - qcom,wcn3990-bt
> +      - qcom,wcn3991-bt
> +      - qcom,wcn3998-bt
> +      - qcom,qca6390-bt      
> +
> +  enable-gpios:
> +    maxItems: 1
> +    description: gpio specifier used to enable chip
> +   
> +  clocks:
> +    maxItems: 1
> +    description: clock provided to the controller (SUSCLK_32KHZ)
> +
> +  vddio-supply:
> +    description: VDD_IO supply regulator handle
> +
> +  vddxo-supply:
> +    description: VDD_XO supply regulator handle
> +
> +  vddrf-supply:
> +    description: VDD_RF supply regulator handle
> +
> +  vddch0-supply:
> +    description: VDD_CH0 supply regulator handle
> +
> +  max-speed: 
> +    description: see Documentation/devicetree/bindings/serial/serial.yaml
> +
> +  firmware-name:
> +    description: specify the name of nvm firmware to load
> +
> +  local-bd-address:
> +    description: see Documentation/devicetree/bindings/net/bluetooth.txt
> +
> +
> +required:
> +  - compatible
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    uart {
> +        label = "BT-UART";

Why do you need a label for in internal port where you've described the 
connection?

> +        status = "okay";

Don't show status in examples.

> +
> +        bluetooth {
> +            compatible = "qcom,qca6174-bt";
> +            enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
> +            clocks = <&divclk4>;
> +            firmware-name = "nvm_00440302.bin";
> +        };
> +    };
> +  - |
> +    uart {
> +
> +        bluetooth {
> +            compatible = "qcom,wcn3990-bt";
> +            vddio-supply = <&vreg_s4a_1p8>;
> +            vddxo-supply = <&vreg_l7a_1p8>;
> +            vddrf-supply = <&vreg_l17a_1p3>;
> +            vddch0-supply = <&vreg_l25a_3p3>;
> +            max-speed = <3200000>;
> +            firmware-name = "crnv21.bin";		
> +        };
> +    };
> -- 
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member 
> of Code Aurora Forum, hosted by The Linux Foundation
>