linux-kernel - Re: [PATCH v8 3/5] arm64: dts: qcom: sc7180: Enable SoC sleep stats

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Date:   Wed, 26 May 2021 19:30:10 -0400
From:   Stephen Boyd <swboyd@...omium.org>
To:     Maulik Shah <mkshah@...eaurora.org>, bjorn.andersson@...aro.org,
        evgreen@...omium.org, mka@...omium.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        agross@...nel.org, dianders@...omium.org, linux@...ck-us.net,
        rnayak@...eaurora.org, lsrao@...eaurora.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v8 3/5] arm64: dts: qcom: sc7180: Enable SoC sleep stats

Quoting Maulik Shah (2021-05-21 04:26:09)
> Add device node for SoC sleep stats driver which provides various
> low power mode stats.
>
> Also update the reg size of aoss_qmp device to 0x400.
>
> Cc: devicetree@...r.kernel.org
> Signed-off-by: Maulik Shah <mkshah@...eaurora.org>
> Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index 6228ba2..889d04d 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -3215,7 +3215,7 @@
>
>                 aoss_qmp: power-controller@...0000 {
>                         compatible = "qcom,sc7180-aoss-qmp";
> -                       reg = <0 0x0c300000 0 0x100000>;
> +                       reg = <0 0x0c300000 0 0x400>;
>                         interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
>                         mboxes = <&apss_shared 0>;
>
> @@ -3223,6 +3223,11 @@
>                         #power-domain-cells = <1>;
>                 };
>
> +               rpmh-sleep-stats@...0000 {
> +                       compatible = "qcom,rpmh-sleep-stats";
> +                       reg = <0 0x0c3f0000 0 0x400>;
> +               };
> +

Does this need to be in DT? Can the sc7180-aoss-qmp driver use the
aux-bus and stick the sleep stats device on there?

>                 spmi_bus: spmi@...0000 {
>                         compatible = "qcom,spmi-pmic-arb";
>                         reg = <0 0x0c440000 0 0x1100>,