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. 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
