Hi John, Am 29.03.2016 um 04:36 schrieb John Youn: > Hi, > > The following patch series addresses the core reset and force mode > delay problems we have been seeing on dwc2 for some platforms. > > I think I have identified the source of the inconsistencies between > platforms and this series attempts to address them. > > Basically everything stems from the IDDIG debounce filter delay, which > is a function of the PHY clock speed and can range from 5-50 ms if > enabled. This delay must be taken into account on core reset and force > modes. A full explanation is provided in the patch commit log and code > comments. > > The first two patches are prerequisites to the force mode fixes, > including one patch that was sent separately by Przemek Rudy. I have > resubmitted it with this series for convenience. > > Please help by reviewing and testing on your platforms. > > Patches were tested on: > * Synopsys HAPS platform IP 3.20a OTG, dr_mode=OTG,HOST,PERIPHERAL i applied the complete patch series on 4.6rc-1 and successfully tested it with my Raspberry Pi B (IP 2.80a, dr_mode=HOST). Probing and usual USB devices (network, keyboard) still works fine. Do you need any other specific tests? Regards Stefan > > Regards, > John > > John Youn (3): > usb: dwc2: gadget: Only initialize device if in device mode > usb: dwc2: Add delay to core soft reset > usb: dwc2: Properly account for the force mode delays > > Przemek Rudy (1): > usb: dwc2: do not override forced dr_mode in gadget setup > > drivers/usb/dwc2/core.c | 195 ++++++++++++++++++++++++++++---------------- > drivers/usb/dwc2/core.h | 2 +- > drivers/usb/dwc2/gadget.c | 30 +++++-- > drivers/usb/dwc2/hcd.c | 6 +- > drivers/usb/dwc2/hw.h | 1 + > drivers/usb/dwc2/platform.c | 9 +- > 6 files changed, 161 insertions(+), 82 deletions(-) > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
