[PATCH 6.6 12/16] arm64: dts: qcom: ipq6018: Disable SS instance in Parkmode for USB

Greg Kroah-Hartman
2024-07-25T14:45:53Z

From: Krishna Kurapati <quic_kriskura@quicinc.com>

commit 4ae4837871ee8c8b055cf8131f65d31ee4208fa0 upstream.

For Gen-1 targets like IPQ6018, 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 IPQ6018 to mitigate this issue.

Cc: stable@vger.kernel.org
Fixes: 20bb9e3dd2e4 ("arm64: dts: qcom: ipq6018: add usb3 DT description")
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240704152848.3380602-2-quic_kriskura@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/boot/dts/qcom/ipq6018.dtsi | 1 +
1 file changed, 1 insertion(+)

--- a/arch/arm64/boot/dts/qcom/ipq6018.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
@@ -579,6 +579,7 @@
clocks = <&xo>;
clock-names = "ref";
tx-fifo-resize;
+ snps,parkmode-disable-ss-quirk;
snps,is-utmi-l1-suspend;
snps,hird-threshold = /bits/ 8 <0x0>;
snps,dis_u2_susphy_quirk;