linux-kernel - Re: [PATCH v4 18/18] dt-bindings: arm: msm: Convert kpss-gcc driver Documentation to yaml

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Date:   Mon, 21 Mar 2022 16:41:37 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Ansuel Smith <ansuelsmth@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 18/18] dt-bindings: arm: msm: Convert kpss-gcc driver
 Documentation to yaml

On 21/03/2022 15:48, Ansuel Smith wrote:
> Convert kpss-gcc driver Documentation to yaml.
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
> ---
>  .../bindings/arm/msm/qcom,kpss-gcc.txt        | 44 ------------
>  .../bindings/arm/msm/qcom,kpss-gcc.yaml       | 68 +++++++++++++++++++
>  2 files changed, 68 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.txt b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
> deleted file mode 100644
> index e628758950e1..000000000000
> --- a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
> +++ /dev/null
> @@ -1,44 +0,0 @@
> -Krait Processor Sub-system (KPSS) Global Clock Controller (GCC)
> -
> -PROPERTIES
> -
> -- compatible:
> -	Usage: required
> -	Value type: <string>
> -	Definition: should be one of the following. The generic compatible
> -			"qcom,kpss-gcc" should also be included.
> -			"qcom,kpss-gcc-ipq8064", "qcom,kpss-gcc"
> -			"qcom,kpss-gcc-apq8064", "qcom,kpss-gcc"
> -			"qcom,kpss-gcc-msm8974", "qcom,kpss-gcc"
> -			"qcom,kpss-gcc-msm8960", "qcom,kpss-gcc"
> -
> -- reg:
> -	Usage: required
> -	Value type: <prop-encoded-array>
> -	Definition: base address and size of the register region
> -
> -- clocks:
> -	Usage: required
> -	Value type: <prop-encoded-array>
> -	Definition: reference to the pll parents.
> -
> -- clock-names:
> -	Usage: required
> -	Value type: <stringlist>
> -	Definition: must be "pll8_vote", "pxo".
> -
> -- clock-output-names:
> -	Usage: required
> -	Value type: <string>
> -	Definition: Name of the output clock. Typically acpu_l2_aux indicating
> -		    an L2 cache auxiliary clock.
> -
> -Example:
> -
> -	l2cc: clock-controller@...1000 {
> -		compatible = "qcom,kpss-gcc-ipq8064", "qcom,kpss-gcc";
> -		reg = <0x2011000 0x1000>;
> -		clocks = <&gcc PLL8_VOTE>, <&gcc PXO_SRC>;
> -		clock-names = "pll8_vote", "pxo";
> -		clock-output-names = "acpu_l2_aux";
> -	};
> 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..20ee182eb16f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.yaml
> @@ -0,0 +1,68 @@
> +# 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:
> +  - Ansuel Smith <ansuelsmth@...il.com>
> +
> +description: |
> +  Krait Processor Sub-system (KPSS) Global Clock Controller (GCC). Used
> +  to control L2 mux (in the current implementation).
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - qcom,kpss-gcc-ipq8064
> +          - qcom,kpss-gcc-apq8064
> +          - qcom,kpss-gcc-msm8974
> +          - qcom,kpss-gcc-msm8960
> +      - const: qcom,kpss-gcc
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: phandle to pll8_vote
> +      - description: phandle to pxo_board
> +
> +  clock-names:
> +    items:
> +      - const: pll8_vote
> +      - const: pxo
> +
> +  clock-output-names:
> +    const: acpu_l2_aux
> +
> +  '#clock-cells':
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - clock-output-names
> +  - '#clock-cells'

You add here a new required property, so this is not a pure conversion.
Please explain in the commit msg why are you doing this. I asked about
this in your previous patchset.

Best regards,
Krzysztof