linux-kernel - Re: [PATCH v2 3/3] arm64: dts: qcom: sc7280: Add cx power domain support

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Message-ID: <CAE-0n52wGtyd7pUTHL4XtFGz1_41OETi3t8CVVL-yG06RYvsVA@mail.gmail.com>
Date:   Mon, 25 Oct 2021 15:25:57 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Doug Anderson <dianders@...omium.org>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        Sandeep Maheswaram <quic_c_sanm@...cinc.com>
Cc:     devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_pkondeti@...cinc.com, quic_ppratap@...cinc.com
Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: sc7280: Add cx power domain support

Quoting Sandeep Maheswaram (2021-10-25 02:07:31)
> Add multi pd support to set performance state for cx domain
> to maintain minimum corner voltage for USB clocks.
>
> Signed-off-by: Sandeep Maheswaram <quic_c_sanm@...cinc.com>
> ---
> v2:
> Changed rpmhd_opp_svs to rmphd_opp_nom for cx domain.
>
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index d74a4c8..9e3b6ad 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -2538,7 +2538,8 @@
>                         interrupt-names = "hs_phy_irq", "dp_hs_phy_irq",
>                                           "dm_hs_phy_irq", "ss_phy_irq";
>
> -                       power-domains = <&gcc GCC_USB30_PRIM_GDSC>;
> +                       power-domains = <&rpmhpd SC7280_CX>, <&gcc GCC_USB30_PRIM_GDSC>;

Order matters and thus the order here can't be flipped.

> +                       required-opps = <&rpmhpd_opp_svs>, <>;