linux-kernel - Re: [PATCH 10/12] dt-bindings: usb: qcom,dwc3: Introduce flattened qcom,dwc3 binding

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Message-ID: <20231017183136.GA2438579-robh@kernel.org>
Date:   Tue, 17 Oct 2023 13:31:36 -0500
From:   Rob Herring <robh@...nel.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Wesley Cheng <quic_wcheng@...cinc.com>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Felipe Balbi <balbi@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...nel.org>,
        Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>
Subject: Re: [PATCH 10/12] dt-bindings: usb: qcom,dwc3: Introduce flattened
 qcom,dwc3 binding

On Mon, Oct 16, 2023 at 08:11:18PM -0700, Bjorn Andersson wrote:
> The Qualcomm USB block consists of three intertwined parts, the XHCI,
> the DWC3 core and the Qualcomm DWC3 glue. The three parts can not be
> operated independently, but the binding was for historical reasons split
> to mimic the Linux driver implementation.
> 
> The split binding also makes it hard to alter the implementation, as
> properties and resources are split between the two nodes, in some cases
> with some duplication.
> 
> Introduce a new binding, with a single representation of the whole USB
> block in one node.
> 
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
>  .../devicetree/bindings/usb/qcom,dwc3.yaml         | 482 +++++++++++++++++++++
>  .../devicetree/bindings/usb/snps,dwc3.yaml         |  14 +-
>  2 files changed, 491 insertions(+), 5 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
> new file mode 100644
> index 000000000000..cb50261c6a36
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
> @@ -0,0 +1,482 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm SuperSpeed DWC3 USB SoC controller
> +
> +maintainers:
> +  - Wesley Cheng <quic_wcheng@...cinc.com>
> +
> +select:
> +  properties:
> +    compatible:
> +      items:
> +        - enum:
> +            - qcom,ipq4019-dwc3
> +            - qcom,ipq5018-dwc3
> +            - qcom,ipq5332-dwc3
> +            - qcom,ipq6018-dwc3
> +            - qcom,ipq8064-dwc3
> +            - qcom,ipq8074-dwc3
> +            - qcom,ipq9574-dwc3
> +            - qcom,msm8953-dwc3
> +            - qcom,msm8994-dwc3
> +            - qcom,msm8996-dwc3
> +            - qcom,msm8998-dwc3
> +            - qcom,qcm2290-dwc3
> +            - qcom,qcs404-dwc3
> +            - qcom,sa8775p-dwc3
> +            - qcom,sc7180-dwc3
> +            - qcom,sc7280-dwc3
> +            - qcom,sc8180x-dwc3
> +            - qcom,sc8280xp-dwc3
> +            - qcom,sc8280xp-dwc3-mp
> +            - qcom,sdm660-dwc3
> +            - qcom,sdm670-dwc3
> +            - qcom,sdm845-dwc3
> +            - qcom,sdx55-dwc3
> +            - qcom,sdx65-dwc3
> +            - qcom,sdx75-dwc3
> +            - qcom,sm4250-dwc3
> +            - qcom,sm6115-dwc3
> +            - qcom,sm6125-dwc3
> +            - qcom,sm6350-dwc3
> +            - qcom,sm6375-dwc3
> +            - qcom,sm8150-dwc3
> +            - qcom,sm8250-dwc3
> +            - qcom,sm8350-dwc3
> +            - qcom,sm8450-dwc3
> +            - qcom,sm8550-dwc3
> +        - const: qcom,dwc3
> +        - const: snps,dwc3
> +  required:
> +    - compatible
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - qcom,ipq4019-dwc3
> +          - qcom,ipq5018-dwc3
> +          - qcom,ipq5332-dwc3
> +          - qcom,ipq6018-dwc3
> +          - qcom,ipq8064-dwc3
> +          - qcom,ipq8074-dwc3
> +          - qcom,ipq9574-dwc3
> +          - qcom,msm8953-dwc3
> +          - qcom,msm8994-dwc3
> +          - qcom,msm8996-dwc3
> +          - qcom,msm8998-dwc3
> +          - qcom,qcm2290-dwc3
> +          - qcom,qcs404-dwc3
> +          - qcom,sa8775p-dwc3
> +          - qcom,sc7180-dwc3
> +          - qcom,sc7280-dwc3
> +          - qcom,sc8180x-dwc3
> +          - qcom,sc8280xp-dwc3
> +          - qcom,sc8280xp-dwc3-mp
> +          - qcom,sdm660-dwc3
> +          - qcom,sdm670-dwc3
> +          - qcom,sdm845-dwc3
> +          - qcom,sdx55-dwc3
> +          - qcom,sdx65-dwc3
> +          - qcom,sdx75-dwc3
> +          - qcom,sm4250-dwc3
> +          - qcom,sm6115-dwc3
> +          - qcom,sm6125-dwc3
> +          - qcom,sm6350-dwc3
> +          - qcom,sm6375-dwc3
> +          - qcom,sm8150-dwc3
> +          - qcom,sm8250-dwc3
> +          - qcom,sm8350-dwc3
> +          - qcom,sm8450-dwc3
> +          - qcom,sm8550-dwc3
> +      - const: qcom,dwc3
> +      - const: snps,dwc3
> +
> +  reg:
> +    description: Offset and length of register set for QSCRATCH wrapper
> +    maxItems: 1

Isn't this more things now? Or the description is wrong.

Rob