linux-kernel - Re: [PATCH v2 1/2] dt-bindings: clock: Add SM7150 GCC clocks

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Date:   Mon, 23 Jan 2023 10:11:30 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Danila Tikhonov <danila@...xyga.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        David Wronek <davidwronek@...il.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: clock: Add SM7150 GCC clocks

On 22/01/2023 20:29, Danila Tikhonov wrote:
> Add device tree bindings for global clock subsystem clock
> controller for Qualcomm Technology Inc's SM7150 SoCs.
> 
> Co-developed-by: David Wronek <davidwronek@...il.com>
> Signed-off-by: David Wronek <davidwronek@...il.com>
> Signed-off-by: Danila Tikhonov <danila@...xyga.com>
> ---
>  .../bindings/clock/qcom,sm7150-gcc.yaml       |  69 +++++++
>  include/dt-bindings/clock/qcom,sm7150-gcc.h   | 193 ++++++++++++++++++
>  2 files changed, 262 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/qcom,sm7150-gcc.yaml
>  create mode 100644 include/dt-bindings/clock/qcom,sm7150-gcc.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/qcom,sm7150-gcc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm7150-gcc.yaml
> new file mode 100644
> index 000000000000..a0105e11fdb8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/qcom,sm7150-gcc.yaml
> @@ -0,0 +1,69 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/qcom,sm7150-gcc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Global Clock & Reset Controller on SM7150
> +
> +maintainers:
> +  - Bjorn Andersson <andersson@...nel.org>
> +  - Danila Tikhonov <danila@...xyga.com>
> +  - David Wronek <davidwronek@...il.com>
> +
> +description: |
> +  Qualcomm global clock control module provides the clocks, resets and power
> +  domains on SM7150
> +
> +  See also:: include/dt-bindings/clock/qcom,sm7150-gcc.h
> +
> +properties:
> +  compatible:
> +    const: qcom,sm7150-gcc
> +
> +  clocks:
> +    items:
> +      - description: Board XO source
> +      - description: Board XO Active-Only source
> +      - description: Sleep clock source
> +

If you started your work from the most recent bindings (e.g. sm8550) you
would have saved one iteration and one set of review...

> +  '#clock-cells':
> +    const: 1

Drop entire property, it's coming from gcc.yaml.


> +  '#reset-cells':
> +    const: 1

Ditto

> +
> +  '#power-domain-cells':
> +    const: 1

Ditto

> +
> +  reg:
> +    maxItems: 1

Ditto

> +
> +required:
> +  - compatible
> +  - reg

Drop reg

> +  - clocks
> +  - '#clock-cells'
> +  - '#reset-cells'
> +  - '#power-domain-cells'

Drop these three.

> +
> +allOf:
> +  - $ref: qcom,gcc.yaml#
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,rpmh.h>
> +    clock-controller@...000 {
> +      compatible = "qcom,sm7150-gcc";
> +      reg = <0x00100000 0x001f0000>;
> +      clocks = <&rpmhcc RPMH_CXO_CLK>,
> +               <&rpmhcc RPMH_CXO_CLK_A>,
> +               <&sleep_clk>;
> +      #clock-cells = <1>;
> +      #reset-cells = <1>;
> +      #power-domain-cells = <1>;
> +    };
> +...
> +
> diff --git a/include/dt-bindings/clock/qcom,sm7150-gcc.h b/include/dt-bindings/clock/qcom,sm7150-gcc.h
> new file mode 100644
> index 000000000000..3e5f8d32796d
> --- /dev/null
> +++ b/include/dt-bindings/clock/qcom,sm7150-gcc.h
> @@ -0,0 +1,193 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +/*
> + * Copyright (c) 2023, Danila Tikhonov <danila@...xyga.com>
> + * Copyright (c) 2023, David Wronek <davidwronek@...il.com>

You did not base your work on any existing bindings upstream or
downstream? This should include original work copyrights...

Best regards,
Krzysztof