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Date:   Thu, 7 Apr 2022 11:06:40 -0700
From:   Matthias Kaehlcke <mka@chromium.org>
To:     Sandeep Maheswaram <quic_c_sanm@quicinc.com>
Cc:     Rob Herring <robh+dt@kernel.org>, Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Felipe Balbi <balbi@kernel.org>,
        Stephen Boyd <swboyd@chromium.org>,
        Doug Anderson <dianders@chromium.org>,
        Mathias Nyman <mathias.nyman@intel.com>,
        Krzysztof Kozlowski <krzk+dt@kernel.org>,
        devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        quic_pkondeti@quicinc.com, quic_ppratap@quicinc.com,
        quic_kriskura@quicinc.com, quic_vpulyala@quicinc.com
Subject: Re: [PATCH v12 6/6] arm64: dts: qcom: sc7280: Add wakeup-source
 property for USB node
Message-ID: <Yk8oMI3zifzFpJmW@google.com>
References: <1649321104-31322-1-git-send-email-quic_c_sanm@quicinc.com>
 <1649321104-31322-7-git-send-email-quic_c_sanm@quicinc.com>
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On Thu, Apr 07, 2022 at 02:15:04PM +0530, Sandeep Maheswaram wrote:
> Adding wakeup-source property for USB controller in SC7280.
> This property is added to inform that the USB controller is
> wake up capable and to conditionally power down the phy during
> system suspend.
> 
> Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index f0b64be..046262a 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -2916,6 +2916,7 @@
>  				phys = <&usb_1_hsphy>, <&usb_1_ssphy>;
>  				phy-names = "usb2-phy", "usb3-phy";
>  				maximum-speed = "super-speed";
> +				wakeup-source;
>  			};
>  		};

Not all SC7280 boards may want to enable wakeup from USB, so this is
probably best configured on a per-board basis.