6.6-stable review patch. If anyone has any objections, please let me know.
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From: Konrad Dybcio konrad.dybcio@oss.qualcomm.com
commit 27f94b71532203b079537180924023a5f636fca1 upstream.
2290 was found in the field to also require this quirk, as long & high-bandwidth workloads (e.g. USB ethernet) are consistently able to crash the controller otherwise.
The same change has been made for a number of SoCs in [1], but QCM2290 somehow escaped the list (even though the very closely related SM6115 was there).
Upon a controller crash, the log would read:
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
Add snps,parkmode-disable-ss-quirk to the DWC3 instance in order to prevent the aforementioned breakage.
[1] https://lore.kernel.org/all/20240704152848.3380602-1-quic_kriskura@quicinc.c...
Cc: stable@vger.kernel.org Reported-by: Rob Clark robin.clark@oss.qualcomm.com Fixes: a64a0192b70c ("arm64: dts: qcom: Add initial QCM2290 device tree") Signed-off-by: Konrad Dybcio konrad.dybcio@oss.qualcomm.com Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@oss.qualcomm.com Link: https://lore.kernel.org/r/20250708-topic-2290_usb-v1-1-661e70a63339@oss.qual... Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/qcom/qcm2290.dtsi | 1 + 1 file changed, 1 insertion(+)
--- a/arch/arm64/boot/dts/qcom/qcm2290.dtsi +++ b/arch/arm64/boot/dts/qcom/qcm2290.dtsi @@ -1107,6 +1107,7 @@ snps,has-lpm-erratum; snps,hird-threshold = /bits/ 8 <0x10>; snps,usb3_lpm_capable; + snps,parkmode-disable-ss-quirk; maximum-speed = "super-speed"; dr_mode = "otg"; };