linux-kernel - Re: [PATCH v2 06/14] arm64: dts: qcom: sdm630: Drop RPM bus clocks

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Message-ID: <70b2a9d7-1a3e-25da-3d78-7bfa5d3a1e05@linaro.org>
Date:   Wed, 13 Sep 2023 09:13:40 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Sibi Sankar <quic_sibis@...cinc.com>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wesley Cheng <quic_wcheng@...cinc.com>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        Alexey Minnekhanov <alexeymin@...tmarketos.org>,
        linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH v2 06/14] arm64: dts: qcom: sdm630: Drop RPM bus clocks

On 12/09/2023 15:31, Konrad Dybcio wrote:
> These clocks are now handled from within the icc framework and are
> no longer registered from within the CCF. Remove them.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm630.dtsi | 49 +++++++-----------------------------
>  1 file changed, 9 insertions(+), 40 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm630.dtsi b/arch/arm64/boot/dts/qcom/sdm630.dtsi
> index ec6003212c4d..f11d2a07508c 100644
> --- a/arch/arm64/boot/dts/qcom/sdm630.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm630.dtsi
> @@ -605,9 +605,6 @@ bimc: interconnect@...8000 {
>  			compatible = "qcom,sdm660-bimc";
>  			reg = <0x01008000 0x78000>;
>  			#interconnect-cells = <1>;
> -			clock-names = "bus", "bus_a";
> -			clocks = <&rpmcc RPM_SMD_BIMC_CLK>,
> -				 <&rpmcc RPM_SMD_BIMC_A_CLK>;

Bindings expect here two clocks, so you miss some bindings patches.

>  		};
>  
>  		restart@...c000 {
> @@ -619,28 +616,17 @@ cnoc: interconnect@...0000 {
>  			compatible = "qcom,sdm660-cnoc";
>  			reg = <0x01500000 0x10000>;
>  			#interconnect-cells = <1>;
> -			clock-names = "bus", "bus_a";
> -			clocks = <&rpmcc RPM_SMD_CNOC_CLK>,
> -				 <&rpmcc RPM_SMD_CNOC_A_CLK>;
>  		};
>  
>  		snoc: interconnect@...6000 {
>  			compatible = "qcom,sdm660-snoc";
>  			reg = <0x01626000 0x7090>;
>  			#interconnect-cells = <1>;
> -			clock-names = "bus", "bus_a";
> -			clocks = <&rpmcc RPM_SMD_SNOC_CLK>,
> -				 <&rpmcc RPM_SMD_SNOC_A_CLK>;
>  		};
>  
>  		anoc2_smmu: iommu@...0000 {
>  			compatible = "qcom,sdm630-smmu-v2", "qcom,smmu-v2";
>  			reg = <0x016c0000 0x40000>;
> -
> -			assigned-clocks = <&rpmcc RPM_SMD_AGGR2_NOC_CLK>;
> -			assigned-clock-rates = <1000>;
> -			clocks = <&rpmcc RPM_SMD_AGGR2_NOC_CLK>;
> -			clock-names = "bus";

This is also against bindings. After your patch #4, such bus clock (or
other combinations) is still required.


>  			#global-interrupts = <2>;
>  			#iommu-cells = <1>;
>  
> @@ -685,16 +671,12 @@ a2noc: interconnect@...4000 {
>  			compatible = "qcom,sdm660-a2noc";
>  			reg = <0x01704000 0xc100>;
>  			#interconnect-cells = <1>;
> -			clock-names = "bus",
> -				      "bus_a",
> -				      "ipa",
> +			clock-names = "ipa",

And which bindings does this match?

Best regards,
Krzysztof