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Date: Thu, 30 May 2024 11:37:41 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Krishna Kurapati <quic_kriskura@quicinc.com>
Cc: cros-qcom-dts-watchers@chromium.org, 
	Krzysztof Kozlowski <krzk+dt@kernel.org>, Rob Herring <robh@kernel.org>, 
	Bjorn Andersson <andersson@kernel.org>, Konrad Dybcio <konrad.dybcio@linaro.org>, 
	Conor Dooley <conor+dt@kernel.org>, Stephen Boyd <swboyd@chromium.org>, 
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Matthias Kaehlcke <mka@chromium.org>, 
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, 
	quic_ppratap@quicinc.com, quic_jackp@quicinc.com, Doug Anderson <dianders@google.com>, 
	stable@vger.kernel.org
Subject: Re: [PATCH 1/2] arm64: dts: qcom: sc7180: Disable SS instances in
 park mode
Message-ID: <tziambdwgp4nrgrhr6z2hl7crrw32ztpv63wcsc3h3hthformm@ylc7la6jrqr7>
References: <20240530082556.2960148-1-quic_kriskura@quicinc.com>
 <20240530082556.2960148-2-quic_kriskura@quicinc.com>
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In-Reply-To: <20240530082556.2960148-2-quic_kriskura@quicinc.com>

On Thu, May 30, 2024 at 01:55:55PM +0530, Krishna Kurapati wrote:
> On SC7180, in host mode, it is observed that stressing out controller
> in host mode results in HC died error and only restarting the host
> mode fixes it. Disable SS instances in park mode for these targets to
> avoid host controller being dead.

Just out of curiosity, what is the park mode?

> 
> Reported-by: Doug Anderson <dianders@google.com>
> Cc: <stable@vger.kernel.org>
> Fixes: 0b766e7fe5a2 ("arm64: dts: qcom: sc7180: Add USB related nodes")
> Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index 2b481e20ae38..cc93b5675d5d 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -3063,6 +3063,7 @@ usb_1_dwc3: usb@a600000 {
>  				iommus = <&apps_smmu 0x540 0>;
>  				snps,dis_u2_susphy_quirk;
>  				snps,dis_enblslpm_quirk;
> +				snps,parkmode-disable-ss-quirk;
>  				phys = <&usb_1_hsphy>, <&usb_1_qmpphy QMP_USB43DP_USB3_PHY>;
>  				phy-names = "usb2-phy", "usb3-phy";
>  				maximum-speed = "super-speed";
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry