Hi, * Aaro Koskinen <aaro.koskinen@xxxxxx> [121219 14:10]: > There seems to be a longstanding bug that OHCI USB host controller > does not respond on 1710, possibly because of wrong clocks. Has it ever > worked? Don't know about 770, but I used to have an old CF card reader hooked to my osk5912 and it was working. > See e.g. http://marc.info/?l=linux-omap&m=119634441229321&w=2. All > register reads return just zeroes: > > [ 1.896606] ohci ohci: OMAP OHCI > [ 1.912597] ohci ohci: new USB bus registered, assigned bus number 1 > [ 1.933776] ohci ohci: irq 38, io mem 0xfffba000 > [ 2.012573] ohci ohci: init err (00000000 0000) > [ 2.030334] ohci ohci: can't start > [ 2.046661] ohci ohci: startup error -75 > [ 2.063201] ohci ohci: USB bus 1 deregistered > > After some experiments, it seems that when changing the usb_dc_ck / > SOFT_REQ enable bit from USB_REQ_EN_SHIFT to SOFT_USB_OTG_DPLL_REQ_SHIFT > (like done also on 7XX), the USB appears to work (tested on Nokia 770): > > [ 2.183959] ohci ohci: OMAP OHCI > [ 2.198242] ohci ohci: new USB bus registered, assigned bus number 1 > [ 2.215820] ohci ohci: irq 38, io mem 0xfffba000 > [ 2.324798] hub 1-0:1.0: USB hub found > [ 2.361267] hub 1-0:1.0: 3 ports detected Cool seems like you've fixed a long standing bug :) And also have tahvo-usb working? > Can someone test if this works also on 16xx and 5912? It seems the current > clock data format does not allow to make this change only for 1710... Does not seem to make a difference, I get the following on osk5912 with and without your patch: hci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver ohci_hcd: block sizes: ed 64 td 64 ohci ohci: OMAP OHCI ohci ohci: new USB bus registered, assigned bus number 1 ohci ohci: starting USB Controller ohci ohci: created debug files ohci ohci: irq 38, io mem 0xfffba000 ohci ohci: OHCI controller state ohci ohci: OHCI 1.0, NO legacy support registers, rh state running ohci ohci: control 0x283 RWC HCFS=operational CBSR=3 ohci ohci: cmdstatus 0x00000 SOC=0 ohci ohci: intrstatus 0x00000004 SF ohci ohci: intrenable 0x8000005a MIE RHSC UE RD WDH ohci ohci: hcca frame #002f ohci ohci: roothub.a 0a000003 POTPGT=10 NDP=3(3) ohci ohci: roothub.b 000e0000 PPCM=000e DR=0000 ohci ohci: roothub.status 00008000 DRWE ohci ohci: roothub.portstatus [0] 0x00000100 PPS ohci ohci: roothub.portstatus [1] 0x00000100 PPS ohci ohci: roothub.portstatus [2] 0x00000100 PPS usb usb1: default language 0x0409 usb usb1: udev 1, busnum 1, minor = 0 usb usb1: New USB device found, idVendor=1d6b, idProduct=0001 usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb1: Product: OMAP OHCI usb usb1: Manufacturer: Linux 3.7.0-00024-gf7c4407 ohci_hcd usb usb1: SerialNumber: ohci usb usb1: usb_probe_device usb usb1: configuration #1 chosen from 1 choice usb usb1: adding 1-0:1.0 (config #1, interface 0) hub 1-0:1.0: usb_probe_interface hub 1-0:1.0: usb_probe_interface - got id hub 1-0:1.0: USB hub found hub 1-0:1.0: 3 ports detected hub 1-0:1.0: standalone hub hub 1-0:1.0: ganged power switching hub 1-0:1.0: global over-current protection hub 1-0:1.0: power on to power good time: 20ms hub 1-0:1.0: 250mA bus power budget for each child hub 1-0:1.0: local power source is good hub 1-0:1.0: no over-current condition exists hub 1-0:1.0: enabling power on all ports Regards, Tony -- 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
