linux-kernel - Re: [v8 3/3] arm64: dts: qcom: sc7280: Add EPSS L3 interconnect provider

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Message-ID: <YXsxxd7f/FaDJEMa@ripper>
Date:   Thu, 28 Oct 2021 16:27:01 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Odelu Kukatla <okukatla@...eaurora.org>
Cc:     georgi.djakov@...aro.org, evgreen@...gle.com,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, sboyd@...nel.org,
        mdtipton@...eaurora.org, sibis@...eaurora.org,
        saravanak@...gle.com, seansw@....qualcomm.com, elder@...aro.org,
        linux-pm@...r.kernel.org, linux-arm-msm-owner@...r.kernel.org
Subject: Re: [v8 3/3] arm64: dts: qcom: sc7280: Add EPSS L3 interconnect
 provider

On Thu 21 Oct 03:40 PDT 2021, Odelu Kukatla wrote:

> Add Epoch Subsystem (EPSS) L3 interconnect provider node on SC7280
> SoCs.
> 
> Signed-off-by: Odelu Kukatla <okukatla@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index d74a4c8..0b55742 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -3687,6 +3687,14 @@
>  			};
>  		};
>  
> +		epss_l3: interconnect@...90000 {
> +			compatible = "qcom,sc7280-epss-l3";
> +			reg = <0 0x18590000 0 0x1000>;

This series looks like I would expect, with and without per-core dcvs.
But can you please explain why this contradict what Sibi says here:
https://lore.kernel.org/all/1627581885-32165-3-git-send-email-sibis@codeaurora.org/

Regards,
Bjorn

> +			clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GCC_GPLL0>;
> +			clock-names = "xo", "alternate";
> +			#interconnect-cells = <1>;
> +		};
> +
>  		cpufreq_hw: cpufreq@...91000 {
>  			compatible = "qcom,cpufreq-epss";
>  			reg = <0 0x18591000 0 0x1000>,
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>