Re: usb: dwc3: HC dies under high I/O load on Exynos5422

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On 16/06/2023 05:11, Jakub Vaněk wrote:
> Hi all,
> 
> I've discovered that on recent kernels the xHCI controller on Odroid
> HC2 dies when a USB-attached disk is put under a heavy I/O load.
> 
> The hardware in question is using a DWC3 2.00a IP within the Exynos5422
> to provide two internal USB3 ports. One of them is connected to a
> JMS578 USB-to-SATA bridge (Odroid firmware v173.01.00.02). The bridge
> is then connected to a Intel SSDSC2KG240G8 (firmware XCV10132).
> 
> The crash can be triggered by running a read-heavy workload. This
> triggers it for me within tens of seconds:

multi_v7 has devfreq enabled. Does disabling ARM_EXYNOS_BUS_DEVFREQ
change anything here?

Best regards,
Krzysztof




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