On Wed, May 2, 2012 at 3:38 AM, Raja, Govindraj <govindraj.raja@xxxxxx> wrote: > On Wed, May 2, 2012 at 2:17 PM, Russ Dill <Russ.Dill@xxxxxx> wrote: >> On Mon, Mar 19, 2012 at 6:34 AM, Raja, Govindraj <govindraj.raja@xxxxxx> wrote: >>> On Mon, Mar 19, 2012 at 12:12 PM, Keshava Munegowda >>> <keshava_mgowda@xxxxxx> wrote: >>>> From: Keshava Munegowda <Keshava_mgowda@xxxxxx> >>>> >>>> It is observed that the echi ports of 3430 sdp board >>>> are not working due to the random timing of programming >>>> the associated GPIOs of the ULPI PHYs of the EHCI for reset. >>>> If the PHYs are reset at during usbhs core driver, host ports will >>>> not work because EHCI driver is loaded after the resetting PHYs. >>>> The PHYs should be in reset state while initializing the EHCI >>>> controller. >>>> The code which does the GPIO pins associated with the PHYs >>>> are programmed to reset is moved from the USB host core driver >>>> to EHCI driver. >>> >>> I tested on beagle xm where gpio nreset is requested from >>> board file. >>> (Basic enumertaion after gpio nreset seems to work fine, >>> Hub and smsc lan chip get detected afetr boot up) >>> >> >> What base did you test this on top of? my xM is failing USB-wise when >> I apply this on v3.3.3 (with the UART mux fix patch) and where it is >> applied within master (3.4-rc4, again, with the UART mux fix patch). >> Additionally, reverting this patch from 3.4-rc5 causes rc5 to work >> properly. >> > > Works for me be on 3.4-rc5 Beagle-XM even without reverting the patch > > Logs as in here [1]. > > -- > Thanks, > Govindraj.R > > [1]: > http://pastebin.pandaboard.org/index.php/view/20343533 I've tracked down the difference. I'm loading my uEnv.txt and uImage in u-boot from the network which means initializing USB. You are loading straight from MMC. If I switch to loading straight from MMC everything works. Can everyone do a 'usb start' in u-boot before booting and re-test? I'm pretty sure this is a regression, but the bug could be a strange u-boot/kernel interaction. -- 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
