linux-kernel - Re: [PATCH v3 1/3] dt-bindings: clock: Add YAML schemas for the QCOM MSS clock bindings

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Message-ID: <8d29b13e5444676df46b2479a1f48e36@codeaurora.org>
Date:   Fri, 07 Feb 2020 12:57:43 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     Taniya Das <tdas@...eaurora.org>
Cc:     Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette   <mturquette@...libre.com>,
        David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andy Gross <agross@...nel.org>, devicetree@...r.kernel.org,
        robh@...nel.org, robh+dt@...nel.org,
        linux-kernel-owner@...r.kernel.org
Subject: Re: [PATCH v3 1/3] dt-bindings: clock: Add YAML schemas for the QCOM
 MSS clock bindings

Hey Taniya,

On 2020-01-30 09:48, Taniya Das wrote:
> The Modem Subsystem clock provider have a bunch of generic properties
> that are needed in a device tree. Add a YAML schemas for those.
> 
> Signed-off-by: Taniya Das <tdas@...eaurora.org>
> ---
>  .../devicetree/bindings/clock/qcom,mss.yaml        | 58 
> ++++++++++++++++++++++
>  1 file changed, 58 insertions(+)
>  create mode 100644 
> Documentation/devicetree/bindings/clock/qcom,mss.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/qcom,mss.yaml
> b/Documentation/devicetree/bindings/clock/qcom,mss.yaml
> new file mode 100644
> index 0000000..ebb04e1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/qcom,mss.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/bindings/clock/qcom,mss.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Modem Clock Controller Binding
> +
> +maintainers:
> +  - Taniya Das <tdas@...eaurora.org>
> +
> +description: |
> +  Qualcomm modem clock control module which supports the clocks.
> +
> +properties:
> +  compatible:
> +    enum:
> +       - qcom,sc7180-mss
> +
> +  clocks:
> +    minItems: 1
> +    maxItems: 3
> +    items:
> +      - description: gcc_mss_mfab_axi clock from GCC
> +      - description: gcc_mss_nav_axi clock from GCC

we don't seem to be referencing the
mss_mfab_axi and mss_nav_axi in the
mss clk driver though, do we really
need them in bindings? If we dont
can we drop the clock-names as well.

> +      - description: gcc_mss_cfg_ahb clock from GCC
> +
> +  clock-names:
> +    items:
> +      - const: gcc_mss_mfab_axis_clk
> +      - const: gcc_mss_nav_axi_clk
> +      - const: cfg_clk
> +
> +  '#clock-cells':
> +    const: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - '#clock-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  # Example of MSS with clock nodes properties for SC7180:
> +  - |
> +    clock-controller@...8000 {
> +      compatible = "qcom,sc7180-mss";
> +      reg = <0x041a8000 0x8000>;
> +      clocks = <&gcc 126>, <&gcc 127>, <&gcc 125>;
> +      clock-names = "gcc_mss_mfab_axis_clk", "gcc_mss_nav_axi_clk", 
> "cfg_clk";
> +      #clock-cells = <1>;
> +    };
> +...
> --
> Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc.is a 
> member
> of the Code Aurora Forum, hosted by the  Linux Foundation.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project.