On 04/25/11 10:23, Steve Calfee wrote: > On 04/25/11 09:41, Keshava Munegowda wrote: >>> -----Original Message----- >>> From: Steve Sakoman [mailto:sakoman@xxxxxxxxx] >>> Sent: Monday, April 25, 2011 7:46 PM >>> To: Alan Ott >>> Cc: Keshava Munegowda; Dmitry Artamonow; Steve Calfee; Felipe Balbi; >> linux-usb@xxxxxxxxxxxxxxx; >>> linux-omap@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx >>> Subject: Re: [Regression?] Removed regulator support in ehci-omap >>> >>> On Mon, Apr 25, 2011 at 7:11 AM, Alan Ott <alan@xxxxxxxxxxx> wrote: >>>> On 04/24/2011 02:37 AM, Keshava Munegowda wrote: >>>>>> -----Original Message----- >>>>>> From: Alan Ott [mailto:alan@xxxxxxxxxxx] >>>>>> Sent: Friday, April 22, 2011 6:41 AM >>>>>> To: Keshava Munegowda >>>>>> Cc: Dmitry Artamonow; Steve Sakoman; Steve Calfee; Felipe Balbi; >>>>> linux-usb@xxxxxxxxxxxxxxx; linux- >>>>>> omap@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx >>>>>> Subject: Re: [Regression?] Removed regulator support in ehci-omap >>>>>> >>>>>> On 04/12/2011 12:20 PM, Keshava Munegowda wrote: >>>>>>>> Ah, so EHCI/OHCI common code was moved into drivers/mfd... Good. >>>>>>>> But seems regulators support was lost somewhere during transition >> - >>>>> the >>>>>>>> only mentioning about regulators in omap-usb-host.c is "#include" >> : >>>>>>>> >>>>>>>> mad@macmini:~/kernel-hack/linux-2.6(master)$ grep -i regulator >>>>>>> drivers/mfd/omap-usb-host.c >>>>>>> Thanks ! I will add some time next week! >>>>>> I have confirmed this on my BeagleBoard-xM. 2.6.38 works, but the >>>>>> 2.6.39-rc4+ head from yesterday did not. It seems that the regulator >>>>>> does not turn the power on for the USB hub which the ethernet is >>>>>> attached to. >>>>>> >>>>>> I connected this issue to bug 33092 in bugzilla[1]. >>>>>> >>>>>> Alan. >>>>>> >>>>>> [1] https://bugzilla.kernel.org/show_bug.cgi?id=33092 >>>>> I have posted the patches on April 22, 2011. >>>>> If possible I request you to test this. >>>> >>>> Hi Keshava, >>>> >>>> If you mean this patch[1], then I tested it against the head and it >>>> didn't fix my problem. I couldn't convince myself that your patch was >>>> supposed to be the whole fix to my problem (since it wasn't mentioned >> on >>>> this thread) so I didn't reply with my findings. Sorry about that. >>> >>> Same here. The real issue (at least for Overo) turned out to be: >>> >>> https://lkml.org/lkml/2011/4/14/45 >>> >>> Steve >> >> But, I was not aware of the fix of the link: >> https://lkml.org/lkml/2011/4/14/45 >> Sorry for this. >> Same fix works for beagle-XM and I have tested this. > > I just tried your 3 patches on my beagleboardxm. It still fails to boot. > Maybe I have a different problem? Your fix did enable usb (at least it > found the hub and usbnet driver, but the smsc95xx driver may or may not > be working. > > Here is my failed 2.6.39rc4 boot log. If I back up to 2.6.38 the kernel > does find the nfs server and starts. > <snip> > [ 4.301788] mmc0: new high speed SDHC card at address 1234 > [ 4.310424] mmcblk0: mmc0:1234 SA04G 3.67 GiB > [ 4.321441] mmcblk0: p1 p2 p3 > [ 4.359619] usb 1-2.1: new high speed USB device number 3 using ehci-omap > [ 4.485046] usb 1-2.1: New USB device found, idVendor=0424, > idProduct=ec00 > [ 4.492309] usb 1-2.1: New USB device strings: Mfr=0, Product=0, > SerialNumbe0 > [ 4.505432] smsc95xx v1.0.4 > [ 4.596130] smsc95xx 1-2.1:1.0: eth0: register 'smsc95xx' at > usb-ehci-omap.0d > [ 16.620605] Root-NFS: no NFS server address > [ 16.625122] VFS: Unable to mount root fs via NFS, trying floppy. > [ 16.632354] List of all partitions: > [ 16.636230] b300 3858432 mmcblk0 driver: mmcblk > [ 16.641876] b301 1020096 mmcblk0p1 > 00000000-0000-0000-0000-00000001 > [ 16.650634] b302 1028160 mmcblk0p2 > 00000000-0000-0000-0000-00000002 > [ 16.659515] b303 1807312 mmcblk0p3 > 00000000-0000-0000-0000-00000003 > [ 16.668243] No filesystem could mount root, tried: nfs > [ 16.673767] Kernel panic - not syncing: VFS: Unable to mount root fs > on unkn Hi Keshava, I rebuilt my system to boot from flash and now I see what happened. I even remember it being discussed on this list. Someone renamed my usb ethernet device from usb0 to eth0 !!! The boot log shows it on this line: > [ 4.596130] smsc95xx 1-2.1:1.0: eth0: register 'smsc95xx' at > usb-ehci-omap.0d So this broke my init scripts and uboot script... OK, so I can live with this (I hope the name doesn't change too often though). So I can manually configure my system to use eth0 and use the network. I am sure I will get nfs working shortly. I am using the 2.6.39-rc4 with your 3 patches. So from the Beagleboard XM perspective it works and you can include my Tested-by: Steve Calfee <stevecalfee@xxxxxxxxx> -- 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
