Hi Joe, "Joe Woodward" <jw@xxxxxxxxxxxxxx> writes: > I have a GUMSTIX Overo AirSTORM (AM3703-based). > > When running a 3.4 kernel the USB host works just fine! > > However when switching to 3.5 I get a few new warning messages and USB host no longer works. As usual, thanks for the bug/problem reports. EHCI is broken in many ways in v3.5. Since the maintainers were not fixing the problems (specifically the PM problems which broke PM for the rest of the SoC too), I requested it be disabled by default in omap2plus_defconfig. Kesheva sent out a large revert patch, and Russ Dill sent out an alternative set of 2 patches that were more targetted fixes, but I lost track of the final resolution there (if any.) Kevin > dmesg log after successfully loading the module (modprobe echi-hcd) on 3.4: > [ 23.424499] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver > [ 23.431427] ehci_hcd: block sizes: qh 64 qtd 96 itd 160 sitd 96 > [ 23.431732] ehci-omap ehci-omap.0: failed to get ehci port1 regulator > [ 23.431762] gpio_request: gpio-183 (USB2 PHY reset) status -16 > [ 24.433471] ehci-omap ehci-omap.0: phy reset operation timed out > [ 24.433502] ehci-omap ehci-omap.0: reset hcs_params 0x1313 dbg=0 cc=1 pcc=3 ordered ports=3 > [ 24.433532] ehci-omap ehci-omap.0: reset hcc_params 0016 thresh 1 uframes 256/512/1024 park > [ 24.433532] ehci-omap ehci-omap.0: reset command 0080b02 park=3 ithresh=8 period=1024 Reset HALT > [ 24.433563] ehci-omap ehci-omap.0: OMAP-EHCI Host Controller > [ 24.440063] ehci-omap ehci-omap.0: new USB bus registered, assigned bus number 1 > [ 24.448120] ehci-omap ehci-omap.0: park 0 > [ 24.448181] ehci-omap ehci-omap.0: irq 77, io mem 0x48064800 > [ 24.454162] ehci-omap ehci-omap.0: init command 0010005 (park)=0 ithresh=1 period=512 RUN > [ 24.474517] ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00 > [ 24.481597] usb usb1: default language 0x0409 > [ 24.481658] usb usb1: udev 1, busnum 1, minor = 0 > [ 24.481689] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 > [ 24.488830] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 > [ 24.496398] usb usb1: Product: OMAP-EHCI Host Controller > [ 24.501953] usb usb1: Manufacturer: Linux 3.4.0 ehci_hcd > [ 24.507537] usb usb1: SerialNumber: ehci-omap.0 > [ 24.528747] usb usb1: usb_probe_device > [ 24.528778] usb usb1: configuration #1 chosen from 1 choice > [ 24.529479] usb usb1: adding 1-0:1.0 (config #1, interface 0) > [ 24.530212] hub 1-0:1.0: usb_probe_interface > [ 24.530242] hub 1-0:1.0: usb_probe_interface - got id > [ 24.530303] hub 1-0:1.0: USB hub found > [ 24.534362] hub 1-0:1.0: 3 ports detected > [ 24.538635] hub 1-0:1.0: standalone hub > [ 24.538635] hub 1-0:1.0: individual port power switching > [ 24.538665] hub 1-0:1.0: individual port over-current protection > [ 24.538665] hub 1-0:1.0: power on to power good time: 20ms > [ 24.539031] hub 1-0:1.0: local power source is good > [ 24.539062] hub 1-0:1.0: enabling power on all ports > [ 24.540008] ehci-omap ehci-omap.0: ...powerup ports... > [ 24.637634] hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0000 > [ 27.013153] hub 1-0:1.0: hub_suspend > [ 27.015319] usb usb1: bus auto-suspend, wakeup 1 > [ 27.015411] ehci-omap ehci-omap.0: suspend root hub > > > dmesg log after failing to load the module (modprobe echi-hcd) on 3.5: > [ 83.900115] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver > [ 83.907043] ehci_hcd: block sizes: qh 64 qtd 96 itd 160 sitd 96 > [ 83.907379] ehci-omap ehci-omap.0: failed to get ehci port1 regulator > [ 84.912445] ehci-omap ehci-omap.0: phy reset operation timed out > [ 84.912475] ehci-omap ehci-omap.0: reset hcs_params 0x1313 dbg=0 cc=1 pcc=3 ordered ports=3 > [ 84.912475] ehci-omap ehci-omap.0: reset hcc_params 0016 thresh 1 uframes 256/512/1024 park > [ 84.912506] ehci-omap ehci-omap.0: reset command 0080b02 park=3 ithresh=8 period=1024 Reset HALT > [ 84.912506] ehci-omap ehci-omap.0: OMAP-EHCI Host Controller > [ 84.919097] ehci-omap ehci-omap.0: new USB bus registered, assigned bus number 1 > [ 84.927154] ehci-omap ehci-omap.0: park 0 > [ 84.927215] ehci-omap ehci-omap.0: irq 77, io mem 0x48064800 > [ 84.933197] ehci-omap ehci-omap.0: init command 0010005 (park)=0 ithresh=1 period=512 RUN > [ 84.946655] ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00 > [ 84.953796] usb usb1: default language 0x0409 > [ 84.953887] usb usb1: udev 1, busnum 1, minor = 0 > [ 84.953887] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 > [ 84.961059] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 > [ 84.968627] usb usb1: Product: OMAP-EHCI Host Controller > [ 84.974151] usb usb1: Manufacturer: Linux 3.5.0 ehci_hcd > [ 84.979736] usb usb1: SerialNumber: ehci-omap.0 > [ 84.987518] usb usb1: usb_probe_device > [ 84.987548] usb usb1: configuration #1 chosen from 1 choice > [ 84.988220] usb usb1: adding 1-0:1.0 (config #1, interface 0) > [ 84.988891] hub 1-0:1.0: usb_probe_interface > [ 84.988922] hub 1-0:1.0: usb_probe_interface - got id > [ 84.988983] hub 1-0:1.0: USB hub found > [ 84.993133] hub 1-0:1.0: 3 ports detected > [ 84.997344] hub 1-0:1.0: standalone hub > [ 84.997344] hub 1-0:1.0: individual port power switching > [ 84.997344] hub 1-0:1.0: individual port over-current protection > [ 84.997375] hub 1-0:1.0: power on to power good time: 20ms > [ 84.997711] hub 1-0:1.0: local power source is good > [ 84.997741] hub 1-0:1.0: enabling power on all ports > [ 84.998840] ehci-omap ehci-omap.0: ...powerup ports... > [ 85.030212] ehci-omap ehci-omap.0: utmi_p1_gfclk failed error:-2 > [ 85.036560] ehci-omap: probe of ehci-omap.0 failed with error -2 > [ 85.093658] hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0000 > [ 87.093780] hub 1-0:1.0: hub_suspend > [ 87.095977] usb usb1: bus auto-suspend, wakeup 1 > [ 87.096099] platform ehci-omap.0: suspend root hub > > You can see that the following two new warnings are produced: > [ 85.030212] ehci-omap ehci-omap.0: utmi_p1_gfclk failed error:-2 > [ 85.036560] ehci-omap: probe of ehci-omap.0 failed with error -2 > > If I (rather crudely) take ehci-omap.c from 3.4, drop it in to 3.5 and re-build then 3.5 works fine. > > Any ideas? > > Cheers, > Joe Woodward > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
