Re: [PATCH v2 2/2] dt-bindings: interconnect: Add bindings for Qualcomm SDM660 NoC

[Rob Herring <robh@kernel.org>]

On Mon, Sep 28, 2020 at 09:58:53PM +0200, kholk11@gmail.com wrote:
> From: AngeloGioacchino Del Regno <kholk11@gmail.com>
> 
> Add the bindings for the Qualcomm SDM660-class NoC, valid for
> SDM630, SDM636, SDM660 and SDA variants.
> 
> Signed-off-by: AngeloGioacchino Del Regno <kholk11@gmail.com>
> ---
>  .../bindings/interconnect/qcom,sdm660.yaml    | 147 ++++++++++++++++++
>  1 file changed, 147 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,sdm660.yaml
> 
> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,sdm660.yaml b/Documentation/devicetree/bindings/interconnect/qcom,sdm660.yaml
> new file mode 100644
> index 000000000000..440e9bc1382a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interconnect/qcom,sdm660.yaml
> @@ -0,0 +1,147 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interconnect/qcom,sdm660.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm SDM660 Network-On-Chip interconnect
> +
> +maintainers:
> +  - Georgi Djakov <georgi.djakov@linaro.org>
> +
> +description: |
> +  The Qualcomm SDM660 interconnect providers support adjusting the
> +  bandwidth requirements between the various NoC fabrics.
> +
> +properties:
> +  reg:
> +    maxItems: 1
> +
> +  compatible:
> +    enum:
> +      - qcom,sdm660-a2noc
> +      - qcom,sdm660-bimc
> +      - qcom,sdm660-cnoc
> +      - qcom,sdm660-gnoc
> +      - qcom,sdm660-mnoc
> +      - qcom,sdm660-snoc
> +
> +  '#interconnect-cells':
> +    const: 1
> +
> +  clocks:
> +    minItems: 1

Looks like 2 is the min?

> +    maxItems: 3
> +
> +  clock-names:
> +    minItems: 1
> +    maxItems: 3
> +
> +required:
> +  - compatible
> +  - reg
> +  - '#interconnect-cells'
> +  - clock-names
> +  - clocks
> +
> +additionalProperties: false
> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,sdm660-mnoc
> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: Bus Clock.
> +            - description: Bus A Clock.
> +            - description: CPU-NoC High-performance Bus Clock.
> +        clock-names:
> +          items:
> +            - const: bus
> +            - const: bus_a
> +            - const: iface

Given both cases are the same except the 3rd clock, all this can be 
moved to the main section. Then here you just need to restrict things 
to 2 or 3 clocks.

> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,sdm660-a2noc
> +              - qcom,sdm660-bimc
> +              - qcom,sdm660-cnoc
> +              - qcom,sdm660-gnoc
> +              - qcom,sdm660-snoc
> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: Bus Clock.
> +            - description: Bus A Clock.
> +        clock-names:
> +          items:
> +            - const: bus
> +            - const: bus_a
> +
> +examples:
> +  - |
> +      #include <dt-bindings/clock/qcom,rpmcc.h>
> +      #include <dt-bindings/clock/qcom,mmcc-sdm660.h>
> +
> +      bimc: interconnect@1008000 {
> +              compatible = "qcom,sdm660-bimc";
> +              reg = <0x01008000 0x78000>;
> +              #interconnect-cells = <1>;
> +              clock-names = "bus", "bus_a";
> +              clocks = <&rpmcc RPM_SMD_BIMC_CLK>,
> +                       <&rpmcc RPM_SMD_BIMC_A_CLK>;
> +      };
> +
> +      cnoc: interconnect@1500000 {
> +              compatible = "qcom,sdm660-cnoc";
> +              reg = <0x01500000 0x10000>;
> +              #interconnect-cells = <1>;
> +              clock-names = "bus", "bus_a";
> +              clocks = <&rpmcc RPM_SMD_CNOC_CLK>,
> +                       <&rpmcc RPM_SMD_CNOC_A_CLK>;
> +      };
> +
> +      snoc: interconnect@1626000 {
> +              compatible = "qcom,sdm660-snoc";
> +              reg = <0x01626000 0x7090>;
> +              #interconnect-cells = <1>;
> +              clock-names = "bus", "bus_a";
> +              clocks = <&rpmcc RPM_SMD_SNOC_CLK>,
> +                       <&rpmcc RPM_SMD_SNOC_A_CLK>;
> +      };
> +
> +      a2noc: interconnect@1704000 {
> +              compatible = "qcom,sdm660-a2noc";
> +              reg = <0x01704000 0xc100>;
> +              #interconnect-cells = <1>;
> +              clock-names = "bus", "bus_a";
> +              clocks = <&rpmcc RPM_SMD_AGGR2_NOC_CLK>,
> +                       <&rpmcc RPM_SMD_AGGR2_NOC_A_CLK>;
> +      };
> +
> +      mnoc: interconnect@1745000 {
> +              compatible = "qcom,sdm660-mnoc";
> +              reg = <0x01745000 0xa010>;
> +              #interconnect-cells = <1>;
> +              clock-names = "bus", "bus_a", "iface";
> +              clocks = <&rpmcc RPM_SMD_MMSSNOC_AXI_CLK>,
> +                       <&rpmcc RPM_SMD_MMSSNOC_AXI_CLK_A>,
> +                       <&mmcc AHB_CLK_SRC>;
> +      };
> +
> +      gnoc: interconnect@17900000 {
> +              compatible = "qcom,sdm660-gnoc";
> +              reg = <0x17900000 0xe000>;
> +              #interconnect-cells = <1>;
> +              clock-names = "bus", "bus_a";
> +              clocks = <&xo_board>, <&xo_board>;
> +      };
> -- 
> 2.28.0
>