linux-kernel - Re: [PATCH RESEND v2 1/9] dt-bindings: clk: qcom: msm8996-apcc: Add CBF

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Date:   Mon, 18 Apr 2022 18:04:08 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Yassine Oudjana <yassine.oudjana@...il.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Ilia Lin <ilia.lin@...nel.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Loic Poulain <loic.poulain@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-pm@...r.kernel.org,
        Yassine Oudjana <y.oudjana@...tonmail.com>,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH RESEND v2 1/9] dt-bindings: clk: qcom: msm8996-apcc: Add
 CBF

On 16/04/2022 04:56, Yassine Oudjana wrote:
> Add CBF clock and reg.
> 
> Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
> Acked-by: Rob Herring <robh@...nel.org>
> ---
>  .../devicetree/bindings/clock/qcom,msm8996-apcc.yaml   | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/clock/qcom,msm8996-apcc.yaml b/Documentation/devicetree/bindings/clock/qcom,msm8996-apcc.yaml
> index a20cb10636dd..325f8aef53b2 100644
> --- a/Documentation/devicetree/bindings/clock/qcom,msm8996-apcc.yaml
> +++ b/Documentation/devicetree/bindings/clock/qcom,msm8996-apcc.yaml
> @@ -10,8 +10,8 @@ maintainers:
>    - Loic Poulain <loic.poulain@...aro.org>
>  
>  description: |
> -  Qualcomm CPU clock controller for MSM8996 CPUs, clock 0 is for Power cluster
> -  and clock 1 is for Perf cluster.
> +  Qualcomm CPU clock controller for MSM8996 CPUs, clock 0 is for Power cluster,
> +  clock 1 is for Perf cluster, and clock 2 is for Coherent bus fabric (CBF).
>  
>  properties:
>    compatible:
> @@ -19,7 +19,9 @@ properties:
>        - qcom,msm8996-apcc
>  
>    reg:
> -    maxItems: 1
> +    items:
> +      - description: Cluster clock registers
> +      - description: CBF clock registers

This breaks the ABI (which might be okay or might be not, but was not
mentioned in the commit) and breaks existing DTSes. Please fix them
before this patch.

Best regards,
Krzysztof