linux-kernel - [PATCH 8/8] arm64: dts: qcom: sdm845: Disable SS instance in Parkmode for USB

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Message-ID: <20240704152848.3380602-9-quic_kriskura@quicinc.com>
Date: Thu, 4 Jul 2024 20:58:48 +0530
From: Krishna Kurapati <quic_kriskura@...cinc.com>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>, Rob Herring <robh@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, Baruch Siach
	<baruch@...s.co.il>,
        Kathiravan T <quic_kathirav@...cinc.com>,
        "Sivaprakash
 Murugesan" <sivaprak@...eaurora.org>,
        Andy Gross <andy.gross@...aro.org>,
        Jeffrey Hugo <quic_jhugo@...cinc.com>,
        Douglas Anderson
	<dianders@...omium.org>,
        Stephen Boyd <swboyd@...omium.org>, Iskren Chernev
	<me@...ren.info>,
        AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...ainline.org>,
        Vivek Gautam
	<vivek.gautam@...eaurora.org>
CC: <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <quic_ppratap@...cinc.com>,
        <quic_jackp@...cinc.com>, Krishna Kurapati <quic_kriskura@...cinc.com>,
        <stable@...r.kernel.org>
Subject: [PATCH 8/8] arm64: dts: qcom: sdm845: Disable SS instance in Parkmode for USB

For Gen-1 targets like SDM845, it is seen that stressing out the
controller in host mode 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 instance in park mode for SDM845 to mitigate this issue.

Cc: <stable@...r.kernel.org>
Fixes: ca4db2b538a1 ("arm64: dts: qcom: sdm845: Add USB-related nodes")
Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
---
 arch/arm64/boot/dts/qcom/sdm845.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 23b101bb3842..54077549b9da 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -4138,6 +4138,7 @@ usb_1_dwc3: usb@...0000 {
 				iommus = <&apps_smmu 0x740 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";
 
@@ -4213,6 +4214,7 @@ usb_2_dwc3: usb@...0000 {
 				iommus = <&apps_smmu 0x760 0>;
 				snps,dis_u2_susphy_quirk;
 				snps,dis_enblslpm_quirk;
+				snps,parkmode-disable-ss-quirk;
 				phys = <&usb_2_hsphy>, <&usb_2_qmpphy>;
 				phy-names = "usb2-phy", "usb3-phy";
 			};
-- 
2.34.1