linux-kernel - Re: [PATCH v5 3/5] dt-bindings: arm: msm: Rework kpss-gcc driver Documentation to yaml

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Date:   Fri, 16 Sep 2022 14:19:03 -0500
From:   Rob Herring <robh@...nel.org>
To:     Christian Marangi <ansuelsmth@...il.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Takashi Iwai <tiwai@...e.de>,
        Christian Brauner <brauner@...nel.org>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Marc Herbert <marc.herbert@...el.com>,
        James Smart <jsmart2021@...il.com>,
        Justin Tee <justin.tee@...adcom.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v5 3/5] dt-bindings: arm: msm: Rework kpss-gcc driver
 Documentation to yaml

On Wed, Sep 14, 2022 at 04:22:54PM +0200, Christian Marangi wrote:
> Rework kpss-gcc driver Documentation to yaml Documentation.
> The current kpss-gcc Documentation have major problems and can't be
> converted directly. Introduce various changes to the original
> Documentation.
> 
> Add #clock-cells additional binding as this clock outputs a static clk
> named acpu_l2_aux with supported compatible.
> Only some compatible require and outputs a clock, for the others, set
> only the reg as a required binding to correctly export the kpss-gcc
> registers. As the reg is shared also add the required syscon compatible.
> 
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> ---
>  .../bindings/arm/msm/qcom,kpss-gcc.txt        | 44 ---------
>  .../bindings/arm/msm/qcom,kpss-gcc.yaml       | 90 +++++++++++++++++++

Please move to bindings/clock/

Same comments as the other one.

>  2 files changed, 90 insertions(+), 44 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
>  create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.yaml

> diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.yaml b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.yaml
> new file mode 100644
> index 000000000000..27f7df7e3ec4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.yaml
> @@ -0,0 +1,90 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/msm/qcom,kpss-gcc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Krait Processor Sub-system (KPSS) Global Clock Controller (GCC)
> +
> +maintainers:
> +  - Christian Marangi <ansuelsmth@...il.com>
> +
> +description: |
> +  Krait Processor Sub-system (KPSS) Global Clock Controller (GCC). Used
> +  to control L2 mux (in the current implementation) and provide access
> +  to the kpss-gcc registers.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - qcom,kpss-gcc-ipq8064
> +          - qcom,kpss-gcc-apq8064
> +          - qcom,kpss-gcc-msm8974
> +          - qcom,kpss-gcc-msm8960
> +          - qcom,kpss-gcc-msm8660
> +          - qcom,kpss-gcc-mdm9615
> +      - const: qcom,kpss-gcc
> +      - const: syscon
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: phandle to pll8_vote
> +      - description: phandle to pxo_board
> +
> +  clock-names:
> +    items:
> +      - const: pll8_vote
> +      - const: pxo
> +
> +  '#clock-cells':
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +
> +if:
> +  properties:
> +    compatible:
> +      contains:
> +        enum:
> +          - qcom,kpss-gcc-ipq8064
> +          - qcom,kpss-gcc-apq8064
> +          - qcom,kpss-gcc-msm8974
> +          - qcom,kpss-gcc-msm8960
> +then:
> +  required:
> +    - clocks
> +    - clock-names
> +    - '#clock-cells'
> +else:
> +  properties:
> +    clock: false
> +    clock-names: false
> +    '#clock-cells': false
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
> +
> +    clock-controller@...1000 {
> +      compatible = "qcom,kpss-gcc-ipq8064", "qcom,kpss-gcc", "syscon";
> +      reg = <0x2011000 0x1000>;
> +      clocks = <&gcc PLL8_VOTE>, <&pxo_board>;
> +      clock-names = "pll8_vote", "pxo";
> +      #clock-cells = <0>;
> +    };
> +
> +  - |
> +    clock-controller@...1000 {
> +      compatible = "qcom,kpss-gcc-mdm9615", "qcom,kpss-gcc", "syscon";
> +      reg = <0x02011000 0x1000>;
> +    };
> +...
> +
> -- 
> 2.37.2
> 
>