Hi Li, On 11/11/2019 02:58, Jun Li wrote: > Hi Neil > > As I got the information from Synopsys, this bug exists on current IP versions, > and per my tests with external USB3 hub + 2 Super speed udisks on data > read by dd, I can reproduce this issue with different kernel versions, also I > didn't see obvious performance drop by dd tests after disable park mode for > super speed, so should we just disable it by default so no need a quirk? I don't have any opinion on this, I think the USB & DWC3 maintainers should decide how to handle this. Did Synopsys specified a range of affected IP version ? Neil > > Li Jun > > Tim <elatllat@xxxxxxxxx> 于2019年11月11日周一 上午8:42写道： >> >> Thanks for working on this Neil, >> Is there something that needs doing for this patch to make it into 5.3 or 5.4? >> As previously mentioned the patch set fixes the issue on affected hardware; >> https://patchwork.kernel.org/patch/11164515/ >> >> >> >> On Wed, Oct 23, 2019 at 4:11 PM Rob Herring <robh@xxxxxxxxxx> wrote: >>> >>> On Mon, Oct 14, 2019 at 04:17:16PM +0200, Neil Armstrong wrote: >>>> This patch updates the documentation with the information related >>>> to the quirks that needs to be added for disabling all SuperSpeed XHCi >>>> instances in park mode. >>>> >>>> CC: Dongjin Kim <tobetter@xxxxxxxxx> >>>> Cc: Jianxin Pan <jianxin.pan@xxxxxxxxxxx> >>>> Reported-by: Tim <elatllat@xxxxxxxxx> >>>> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> >>>> --- >>>> Documentation/devicetree/bindings/usb/dwc3.txt | 2 ++ >>>> 1 file changed, 2 insertions(+) >>> >>> Sigh, what's one more to the never ending list of quirks... >>> >>> Acked-by: Rob Herring <robh@xxxxxxxxxx>
