Hi Peter On Tue, Dec 19, 2017 at 3:08 PM, Michael Nazzareno Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx> wrote: > Hi Peter > > On Thu, Nov 16, 2017 at 10:20 AM, Peter Chen <peter.chen@xxxxxxx> wrote: >> >>> > >>> > All USB registers, including USB transceiver, USB non-core, and USB core. >>> >>> I need to have some time to go to the platform again. It will be possible this weekend. >>> Have you any idea to restrict the debug apart register dump? >>> >> >> I am afraid I don't have since imx25 is too old, I have little directly experiences on it. >> > > I have done some testing on top. I can not easily dump registers on > the 2.6.31. I have > recompile the old kernel and re-instrumented it. Well I don't find any > important thing. > > The old kernel was using ehci_fsl.c basecode and the new one use > chipidea. Let's say that > some changes are in USB_CTRL usbmisc controller initialization but > even play with those bits > I did not find any failure on that side. I will continue on > difference. Hope that some other have some idea ;). I have used a usb hardware tracer. What I can say that basically after the reset the device try to go in HIGH SPEED mode but the controller can only manage full speed even is an ehci. I have tried the errata to set PFSC bit but is even set from the dts if we force the FULL SPEED mode. Michael > > Michael > > >> Peter -- | Michael Nazzareno Trimarchi Amarula Solutions BV | | COO - Founder Cruquiuskade 47 | | +31(0)851119172 Amsterdam 1018 AM NL | | [`as] http://www.amarulasolutions.com | -- 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
