Re: [PATCH] arm64: dts: qcom: qcm2290: Disable USB SS bus instances in park mode

[Dmitry Baryshkov]

On Tue, Jul 08, 2025 at 12:28:42PM +0200, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxxx/
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Reported-by: Rob Clark <robin.clark@xxxxxxxxxxxxxxxx>
> Fixes: a64a0192b70c ("arm64: dts: qcom: Add initial QCM2290 device tree")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/qcm2290.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>


-- 
With best wishes
Dmitry