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From: Krishna Kurapati <quic_kriskura@quicinc.com>
To: <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>
CC: <linux-kernel@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <quic_ppratap@quicinc.com>,
        <quic_jackp@quicinc.com>, Krishna Kurapati <quic_kriskura@quicinc.com>,
        "Doug
 Anderson" <dianders@google.com>, <stable@vger.kernel.org>
Subject: [PATCH v2 1/2] arm64: dts: qcom: sc7180: Disable SuperSpeed instances in park mode
Date: Tue, 4 Jun 2024 11:36:58 +0530
Message-ID: <20240604060659.1449278-2-quic_kriskura@quicinc.com>
In-Reply-To: <20240604060659.1449278-1-quic_kriskura@quicinc.com>
References: <20240604060659.1449278-1-quic_kriskura@quicinc.com>
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On SC7180, in host mode, it is observed that stressing out controller
results in HC died error:

 xhci-hcd.12.auto: xHCI host not responding to stop endpoint command
 xhci-hcd.12.auto: xHCI host controller not responding, assume dead
 xhci-hcd.12.auto: HC died; cleaning up

And at this instant only restarting the host mode fixes it. Disable
SuperSpeed instances in park mode for SC7180 to mitigate this issue.

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>
---
Removed RB/TB tag from Doug as commit text was updated. 

 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