linux-kernel - Re: [PATCH 2/2] dt-bindings: interconnect: Add SM6115 DT bindings

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Date:   Wed, 30 Nov 2022 12:41:21 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org
Cc:     agross@...nel.org, bhupesh.linux@...il.com,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        djakov@...nel.org, konrad.dybcio@...aro.org, a39.skl@...il.com,
        andersson@...nel.org
Subject: Re: [PATCH 2/2] dt-bindings: interconnect: Add SM6115 DT bindings

On 30/11/2022 11:38, Bhupesh Sharma wrote:
> The Qualcomm SM6115 SoC has several bus fabrics that could be
> controlled and tuned dynamically according to the bandwidth demand.
> 
> Add the support for the same.
> 
> Cc: Bjorn Andersson <andersson@...nel.org>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---

Thank you for your patch. There is something to discuss/improve.

We could create common properties for these bindings, but it's fine now.

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,rpmcc.h>
> +
> +    snoc: interconnect@...0000 {
> +        compatible = "qcom,sm6115-snoc";
> +        reg = <0x01880000 0x60200>;
> +        #interconnect-cells = <1>;
> +        clock-names = "bus", "bus_a";
> +        clocks = <&rpmcc RPM_SMD_SNOC_CLK>,
> +                 <&rpmcc RPM_SMD_SNOC_A_CLK>;
> +
> +        clk_virt: interconnect-clk {
> +            compatible = "qcom,sm6115-clk-virt";
> +            #interconnect-cells = <1>;
> +            clock-names = "bus", "bus_a";
> +            clocks = <&rpmcc RPM_SMD_QUP_CLK>,
> +                     <&rpmcc RPM_SMD_QUP_A_CLK>;
> +        };
> +
> +        mmnrt_virt: interconnect-mmnrt {
> +            compatible = "qcom,sm6115-mmnrt-virt";
> +            #interconnect-cells = <1>;
> +            clock-names = "bus", "bus_a";
> +            clocks = <&rpmcc RPM_SMD_MMNRT_CLK>,
> +                     <&rpmcc RPM_SMD_MMNRT_A_CLK>;
> +        };
> +
> +        mmrt_virt: interconnect-mmrt {
> +            compatible = "qcom,sm6115-mmrt-virt";
> +            #interconnect-cells = <1>;
> +            clock-names = "bus", "bus_a";
> +            clocks = <&rpmcc RPM_SMD_MMRT_CLK>,
> +                     <&rpmcc RPM_SMD_MMRT_A_CLK>;
> +        };

Drop last two nodes - they are the same as first.

> +    };
> +
> +    cnoc: interconnect@...0000 {
> +        compatible = "qcom,sm6115-cnoc";
> +        reg = <0x01900000 0x8200>;
> +        #interconnect-cells = <1>;
> +        clock-names = "bus", "bus_a";
> +        clocks = <&rpmcc RPM_SMD_CNOC_CLK>,
> +                 <&rpmcc RPM_SMD_CNOC_A_CLK>;
> +    };
> +
> +    bimc: interconnect@...0000 {
> +        compatible = "qcom,sm6115-bimc";
> +        reg = <0x04480000 0x80000>;
> +        #interconnect-cells = <1>;
> +        clock-names = "bus", "bus_a";
> +        clocks = <&rpmcc RPM_SMD_BIMC_CLK>,
> +                 <&rpmcc RPM_SMD_BIMC_A_CLK>;
> +    };

Drop these two as well, they do not bring anything new here.

> diff --git a/include/dt-bindings/interconnect/qcom,sm6115.h b/include/dt-bindings/interconnect/qcom,sm6115.h
> new file mode 100644
> index 000000000000..2997106a661e
> --- /dev/null
> +++ b/include/dt-bindings/interconnect/qcom,sm6115.h
> @@ -0,0 +1,115 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +/*
> + * Qualcomm SM6115 interconnect IDs
> + *
> + * Copyright (c) 2022, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2022, Linaro Limited

Best regards,
Krzysztof