I have following system: USB0: host mode (USB hub is soldered internally) USB1: OTG mode with OTG connector My DTS: http://pastebin.com/KB3iTehQ If I enable DMA in the kernel, I get USB0 working, i.e. USB hub is detected and USB devices, that are connected to this hub are also detected and working. The USB thumb drive connected to USB1 won't be detected. # lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=musb-hdrc/1p, 480M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=musb-hdrc/1p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 2: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M |__ Port 3: Dev 3, If 0, Class=Communications, Driver=cdc_acm, 12M |__ Port 3: Dev 3, If 1, Class=CDC Data, Driver=cdc_acm, 12M of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401300[0]' 47401300.usb-phy supply vcc not found, using dummy regulator musb-hdrc musb-hdrc.0.auto: Failed to request rx1. musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517 platform musb-hdrc.0.auto: Driver musb-hdrc requests probe deferral of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401b00[0]' 47401b00.usb-phy supply vcc not found, using dummy regulator musb-hdrc musb-hdrc.1.auto: Failed to request rx1. musb-hdrc musb-hdrc.1.auto: musb_init_controller failed with status -517 platform musb-hdrc.1.auto: Driver musb-hdrc requests probe deferral usbcore: registered new interface driver usbhid usbhid: USB HID core driver musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1 usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb1: Product: MUSB HDRC host driver usb usb1: Manufacturer: Linux 3.16.0-rc3-00006-g16874b2 musb-hcd usb usb1: SerialNumber: musb-hdrc.0.auto musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 2 usb usb2: New USB device found, idVendor=1d6b, idProduct=0002 usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb2: Product: MUSB HDRC host driver usb usb2: Manufacturer: Linux 3.16.0-rc3-00006-g16874b2 musb-hcd usb usb2: SerialNumber: musb-hdrc.1.auto usb 1-1: new high-speed USB device number 2 using musb-hdrc usb 1-1: New USB device found, idVendor=05e3, idProduct=0608 usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 usb 1-1: Product: USB2.0 Hub usb 1-1.3: new full-speed USB device number 3 using musb-hdrc usb 1-1.3: New USB device found, idVendor=1546, idProduct=01a7 usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1.3: Product: u-blox 7 - GPS/GNSS Receiver usb 1-1.3: Manufacturer: u-blox AG - www.u-blox.com usb 1-1.2: new high-speed USB device number 4 using musb-hdrc usb 1-1.2: New USB device found, idVendor=1307, idProduct=0165 usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1.2: Product: USB Mass Storage Device usb 1-1.2: Manufacturer: USBest Technology usb 1-1.2: SerialNumber: 00000000000504 usb-storage 1-1.2:1.0: USB Mass Storage device detected scsi0 : usb-storage 1-1.2:1.0 If I disable DMA in the kernel, I have reverse behavior: USB1 is working, USB0 doesn't see the hub. # lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=musb-hdrc/1p, 480M |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 480M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=musb-hdrc/1p, 480M of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401300[0]' 47401300.usb-phy supply vcc not found, using dummy regulator musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1 usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb1: Product: MUSB HDRC host driver usb usb1: Manufacturer: Linux 3.16.0-rc3-00006-g16874b2 musb-hcd usb usb1: SerialNumber: musb-hdrc.0.auto of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401b00[0]' 47401b00.usb-phy supply vcc not found, using dummy regulator musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn) musb-hdrc: MHDRC RTL version 2.0 musb-hdrc: setup fifo_mode 4 musb-hdrc: 28/31 max ep, 16384/16384 memory musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 2 usb usb2: New USB device found, idVendor=1d6b, idProduct=0002 usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb2: Product: MUSB HDRC host driver usb usb2: Manufacturer: Linux 3.16.0-rc3-00006-g16874b2 musb-hcd usb usb2: SerialNumber: musb-hdrc.1.auto usb0: HOST MAC 02:97:91:6a:a9:c6 usb0: MAC 06:cf:9d:85:16:7f usbcore: registered new interface driver usbhid usbhid: USB HID core driver usb 1-1: new high-speed USB device number 2 using musb-hdrc usb 1-1: new high-speed USB device number 3 using musb-hdrc usb 1-1: new high-speed USB device number 4 using musb-hdrc usb 1-1: new high-speed USB device number 5 using musb-hdrc usb 2-1: new high-speed USB device number 2 using musb-hdrc usb 2-1: New USB device found, idVendor=1b8f, idProduct=0305 usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 2-1: Product: EXPRESS DUO usb 2-1: Manufacturer: STT usb 2-1: SerialNumber: 09021000000110490000000154 usb-storage 2-1:1.0: USB Mass Storage device detected scsi0 : usb-storage 2-1:1.0 In 3.15 both interfaces were working. The only problem was, that my GPS card didn't work with USB0 in DMA mode. Regards, Yegor -- 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
