linux-kernel - Re: [PATCH v5 1/2] dt-bindings: misc: fastrpc convert bindings to yaml

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Date:   Mon, 5 Sep 2022 13:29:01 +0300
From:   Abel Vesa <abel.vesa@...aro.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Amol Maheshwari <amahesh@....qualcomm.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Heidelberg <david@...t.cz>
Subject: Re: [PATCH v5 1/2] dt-bindings: misc: fastrpc convert bindings to
 yaml

On 22-09-05 12:53:39, Abel Vesa wrote:
> Convert Qualcomm FastRPC bindings to yaml format, so that we could validate
> dt-entries correctly and any future additions can go into yaml format.
> 
> Use compute-cb@ subnodes instead of just cb@.
> 
> Also add qcom,non-secure-domain, qcom,glink-channels and
> qcom,smd-channels missing properties to make sure dtbs_check doesn't
> fail right off the bat.
> 
> Co-developed-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Co-developed-by: David Heidelberg <david@...t.cz>
> Signed-off-by: David Heidelberg <david@...t.cz>
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> ---
> 
> Changes since v4:
>  * set global additionalProperties to false and removed the one for
>  patternProperties
>  * fixed compute-cb property to allow more than 9 nodes.
>  * added missing qcom,glink-channels, qcom,non-secure-domain and
>  qcom,smd-channels, without which the dtbs_check would fail
> 
>  .../bindings/misc/qcom,fastrpc.yaml           | 108 ++++++++++++++++++

Oups, forgot to drop the txt one. Will resend.

>  1 file changed, 108 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> new file mode 100644
> index 000000000000..3c11a3741994
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> @@ -0,0 +1,108 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/misc/qcom,fastrpc.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Qualcomm FastRPC Driver
> +
> +maintainers:
> +  - Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> +
> +description: |
> +  The FastRPC implements an IPC (Inter-Processor Communication)
> +  mechanism that allows for clients to transparently make remote method
> +  invocations across DSP and APPS boundaries. This enables developers
> +  to offload tasks to the DSP and free up the application processor for
> +  other tasks.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: qcom,fastrpc
> +
> +  label:
> +    items:
> +      enum:
> +        - adsp
> +        - mdsp
> +        - sdsp
> +        - cdsp
> +
> +  qcom,glink-channels:
> +    description:
> +      A list of channels tied to this function, used for matching
> +      the function to a set of virtual channels.
> +    $ref: "/schemas/types.yaml#/definitions/string-array"
> +
> +  qcom,non-secure-domain:
> +    description:
> +      Used to mark the current domain as non-secure.
> +    type: boolean
> +
> +  qcom,smd-channels:
> +    description:
> +      Channel name used for the RPM communication
> +    $ref: "/schemas/types.yaml#/definitions/string-array"
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0
> +
> +patternProperties:
> +  "(compute-)?cb@[0-9]*$":
> +    type: object
> +
> +    description: >
> +      Each subnode of the Fastrpc represents compute context banks available on the dsp.
> +
> +    properties:
> +      compatible:
> +        items:
> +          - const: qcom,fastrpc-compute-cb
> +
> +      reg:
> +        maxItems: 1
> +
> +      qcom,nsession:
> +        $ref: /schemas/types.yaml#/definitions/uint32
> +        default: 1
> +        description: >
> +          A value indicating how many sessions can share this context bank.
> +
> +    required:
> +      - compatible
> +      - reg
> +
> +required:
> +  - compatible
> +  - label
> +  - '#address-cells'
> +  - '#size-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    smd-edge {
> +        label = "lpass";
> +        fastrpc {
> +            compatible = "qcom,fastrpc";
> +            label = "adsp";
> +            qcom,smd-channels = "fastrpcsmd-apps-dsp";
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            compute-cb@1 {
> +                compatible = "qcom,fastrpc-compute-cb";
> +                reg = <1>;
> +            };
> +
> +            compute-cb@2 {
> +                compatible = "qcom,fastrpc-compute-cb";
> +                reg = <2>;
> +            };
> +        };
> +    };
> -- 
> 2.34.1
>