linux-kernel - Re: [PATCH 2/7] arm64: dts: qcom: sm8250: Add cpufreq hw node

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Message-ID: <CAHLCerMXWsYX85RWYXqb7Ch9KXFsiR0H-Y-L-y68wdtyPFNnvA@mail.gmail.com>
Date:   Tue, 8 Sep 2020 17:26:47 +0530
From:   Amit Kucheria <amitk@...nel.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Taniya Das <tdas@...eaurora.org>
Subject: Re: [PATCH 2/7] arm64: dts: qcom: sm8250: Add cpufreq hw node

On Tue, Sep 8, 2020 at 1:27 PM Manivannan Sadhasivam
<manivannan.sadhasivam@...aro.org> wrote:
>
> From: Bjorn Andersson <bjorn.andersson@...aro.org>
>
> Add cpufreq HW device node to scale 4-Silver/3-Gold/1-Gold+ cores
> on SM8250 SoCs.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>


Reviewed-by: Amit Kucheria <amitk@...nel.org>


> ---
>  arch/arm64/boot/dts/qcom/sm8250.dtsi | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> index e7d139e1a6ce..aafb46a26a9c 100644
> --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> @@ -87,6 +87,7 @@
>                         reg = <0x0 0x0>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_0>;
> +                       qcom,freq-domain = <&cpufreq_hw 0>;
>                         L2_0: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -102,6 +103,7 @@
>                         reg = <0x0 0x100>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_100>;
> +                       qcom,freq-domain = <&cpufreq_hw 0>;
>                         L2_100: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -114,6 +116,7 @@
>                         reg = <0x0 0x200>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_200>;
> +                       qcom,freq-domain = <&cpufreq_hw 0>;
>                         L2_200: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -126,6 +129,7 @@
>                         reg = <0x0 0x300>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_300>;
> +                       qcom,freq-domain = <&cpufreq_hw 0>;
>                         L2_300: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -138,6 +142,7 @@
>                         reg = <0x0 0x400>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_400>;
> +                       qcom,freq-domain = <&cpufreq_hw 1>;
>                         L2_400: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -150,6 +155,7 @@
>                         reg = <0x0 0x500>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_500>;
> +                       qcom,freq-domain = <&cpufreq_hw 1>;
>                         L2_500: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -163,6 +169,7 @@
>                         reg = <0x0 0x600>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_600>;
> +                       qcom,freq-domain = <&cpufreq_hw 1>;
>                         L2_600: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -175,6 +182,7 @@
>                         reg = <0x0 0x700>;
>                         enable-method = "psci";
>                         next-level-cache = <&L2_700>;
> +                       qcom,freq-domain = <&cpufreq_hw 2>;
>                         L2_700: l2-cache {
>                               compatible = "cache";
>                               next-level-cache = <&L3_0>;
> @@ -2076,6 +2084,20 @@
>                                 };
>                         };
>                 };
> +
> +               cpufreq_hw: cpufreq@...91000 {
> +                       compatible = "qcom,sm8250-epss";
> +                       reg = <0 0x18591000 0 0x1000>,
> +                             <0 0x18592000 0 0x1000>,
> +                             <0 0x18593000 0 0x1000>;
> +                       reg-names = "freq-domain0", "freq-domain1",
> +                                   "freq-domain2";
> +
> +                       clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GPLL0>;
> +                       clock-names = "xo", "alternate";
> +
> +                       #freq-domain-cells = <1>;
> +               };
>         };
>
>         timer {
> --
> 2.17.1
>