linux-kernel - Re: [PATCH 1/2] dt-bindings: interconnect: Add compatibles for SDX75

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Message-ID: <c19e0ecf-7e8c-b9c3-0741-40c7aa3cb200@linaro.org>
Date:   Tue, 5 Sep 2023 08:59:39 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Rohit Agarwal <quic_rohiagar@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, djakov@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...cinc.com
Subject: Re: [PATCH 1/2] dt-bindings: interconnect: Add compatibles for SDX75

On 05/09/2023 06:59, Rohit Agarwal wrote:
> Add dt-bindings compatibles and interconnect IDs for
> Qualcomm SDX75 platform.
> 
> Signed-off-by: Rohit Agarwal <quic_rohiagar@...cinc.com>
> ---
>  .../bindings/interconnect/qcom,sdx75-rpmh.yaml     | 100 ++++++++++++++++++++
>  include/dt-bindings/interconnect/qcom,sdx75.h      | 102 +++++++++++++++++++++
>  2 files changed, 202 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml
>  create mode 100644 include/dt-bindings/interconnect/qcom,sdx75.h
> 
> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml b/Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml
> new file mode 100644
> index 0000000..f2dc87c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml
> @@ -0,0 +1,100 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interconnect/qcom,sdx75-rpmh.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm RPMh Network-On-Chip Interconnect on SDX75
> +
> +maintainers:
> +  - Georgi Djakov <djakov@...nel.org>

I don't think Georgi maintains this device. It's maintainer of device,
not the subsystem.

> +
> +description:
> +  RPMh interconnect providers support system bandwidth requirements through
> +  RPMh hardware accelerators known as Bus Clock Manager (BCM). The provider is
> +  able to communicate with the BCM through the Resource State Coordinator (RSC)
> +  associated with each execution environment. Provider nodes must point to at
> +  least one RPMh device child node pertaining to their RSC and each provider
> +  can map to multiple RPMh resources.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,sdx75-clk-virt
> +      - qcom,sdx75-dc-noc
> +      - qcom,sdx75-gem-noc
> +      - qcom,sdx75-mc-virt
> +      - qcom,sdx75-pcie-anoc
> +      - qcom,sdx75-system-noc
> +
> +  '#interconnect-cells': true'
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +allOf:
> +  - $ref: qcom,rpmh-common.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,sdx75-clk-virt
> +              - qcom,sdx75-mc-virt
> +    then:
> +      properties:
> +        reg: false
> +    else:
> +      required:
> +        - reg
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,sdx75-clk-virt
> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: RPMH CC QPIC Clock
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,sdx75-clk-virt

This if: clause should be merged with the one earlier.

> +    then:
> +      required:
> +        - clocks
> +    else:
> +      properties:
> +        clocks: false
> +
> +required:
> +  - compatible

Please keep the order like in example-schema, so required: goes before
allOf.

> +
> +unevaluatedProperties: false

Best regards,
Krzysztof