Fwd: dwc3: regression in USB DWC3 driver in kernel 5.15 branch

[Bagas Sanjaya]

Hi,

I notice a stable-specific regression on Bugzilla [1]. Quoting from it:

> The backport commit to 5.15 branch:
> 9d4f84a15f9c9727bc07f59d9dafc89e65aadb34 "arm64: dts: imx8mp: Add snps,gfladj-refclk-lpm-sel quirk to USB nodes"  (from upstream commit 5c3d5ecf48ab06c709c012bf1e8f0c91e1fcd7ad)
> switched from "snps,dis-u2-freeclk-exists-quirk" to "snps,gfladj-refclk-lpm-sel-quirk".
> 
> The problem is that the gfladj-refclk-lpm-sel-quirk quirk is not implemented / backported to 5.15 branch.
> 
> This commit should be either reverted, or the commit introducing gfladj-refclk-lpm-sel-quirk needs to be merged to 5.15 kernel branch.
> 
> As a result of this patch, on Gateworks Venice GW7400 revB board the USB 3.x devices which are connected to the USB Type C port does not enumerate and the following errors are generated:
> 
> [   14.906302] xhci-hcd xhci-hcd.0.auto: Timeout while waiting for setup device command
> [   15.122383] usb 2-1: device not accepting address 2, error -62
> [   25.282195] xhci-hcd xhci-hcd.0.auto: Abort failed to stop command ring: -110
> [   25.297408] xhci-hcd xhci-hcd.0.auto: xHCI host controller not responding, assume dead
> [   25.305345] xhci-hcd xhci-hcd.0.auto: HC died; cleaning up
> [   25.311058] xhci-hcd xhci-hcd.0.auto: Timeout while waiting for stop endpoint command
> [   25.334361] usb usb2-port1: couldn't allocate usb_device
> 
> When the commit is reverted the USB 3.x drives works fine.

See Bugzilla for the full thread and attach dmesgs.

Anyway, I'm adding it to regzbot:

#regzbot introduced: 9d4f84a15f9c97 https://bugzilla.kernel.org/show_bug.cgi?id=217670
#regzbot title: regression in USB DWC3 driver due to missing gfladj-refclk-lpm-sel-quirk quirk

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=217670

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