This to fix USB enumeration compatibility issue found on DWC3 (host mode) IP only.
Some pre-discussion mails can be referred from: https://lkml.org/lkml/2018/11/23/387 https://lkml.org/lkml/2018/11/22/683 As to the workaround, I know programming xhci register in DWC3 dirver (probe function) is not good from perspective of SW stack, but it seems to be the only place to fix this real existing problem (test result show that doing this in xhci-plat.c or xhci.c would not hlep on this kind of failure). If who have better idea, please let me know, thanks in advanced. Ran Wang (2): dt-bindings: Add workaround for host mode VBUS glitch when boot dwc3 core driver: Add avoiding vbus glitch happen during xhci reset Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++ drivers/usb/dwc3/core.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc3/core.h | 10 +++++++++- 3 files changed, 60 insertions(+), 0 deletions(-) -- 1.7.1
