On Tue, Sep 4, 2018 at 12:12 PM Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> wrote: > > > Hi, > > Ranran <ranshalit@xxxxxxxxx> writes: > > On Mon, Sep 3, 2018 at 4:50 PM Ranran <ranshalit@xxxxxxxxx> wrote: > >> > >> On Mon, Sep 3, 2018 at 4:22 PM Ranran <ranshalit@xxxxxxxxx> wrote: > >> > > >> > On Mon, Sep 3, 2018 at 3:40 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > >> > > > >> > > On Mon, Sep 03, 2018 at 09:39:14AM +0300, Ranran wrote: > >> > > > Hello, > >> > > > > >> > > > I try to add gadget configfs as described in: > >> > > > https://www.kernel.org/doc/Documentation/usb/gadget_configfs.txt > >> > > > Yet, I find nothing in /sys/class/udc: > >> > > > > >> > > > user@user-VirtualBox:~/tegra$ ls /sys/class/udc/ -al > >> > > > total 0 > >> > > > drwxr-xr-x 2 root root 0 Sep 3 00:30 . > >> > > > drwxr-xr-x 58 root root 0 Sep 3 00:30 .. > >> > > > > >> > > > I also don't have dwc2, but dwc3: > >> > > > user@user-VirtualBox:~/tegra$ lsmod | grep dw > >> > > > dwc3 90112 0 > >> > > > ulpi 16384 1 dwc3 > >> > > > udc_core 24576 2 dwc3,libcomposite > >> > > > user@user-VirtualBox:~/tegra$ > >> > > > > >> > > > Kernel is 4.4.50. > >> > > > >> > > Why do you think the dwc3 driver will work here? Do you really have > >> > > this hardware being emulated? > >> > > > >> > Hi, > >> > > >> > I check it with Intel's E3900. > >> > In datasheet, I can't find it being described in details in datasheet, > >> > yet being linked with another document ("see Section Little-Endian and > >> > Big-Endian in the DWC SuperSpeed USB 3.0 Controller User Guide" ) > >> > https://www.mouser.com/ds/2/612/atom-e3800-family-datasheet-915661.pdf > >> > I have installed module dwc3 and also dwc2 (both compiled as modules), > >> > but nothing appear in /sys/class/udc > >> > I also tried to add all options in device-drivers->usb->usb > >> > gadget->usb peripheral control into kernel, (not as modules, but built > >> > into kernel). > >> > Yet, on checking > >> > ls /sys/class/udc > >> > I only find dummy_udc.0 , and nothing else. > >> > > >> > >> I suspect that there is no device controller supported with this com > >> express (congatec type 10), probably this is the only explanations for > >> the empty /sys/class/udc. > >> > > > > A fix for my last comment: > > usb device controller should be supported with conga-MA5 (contains > > Intel's appolo lake), so I am still not sure why I find /sys/class/udc > > empty. > > In congatec MA-5 document it is said: > > "The conga-MA5 offers six USB 2.0 interfaces on the COM Express > > connector including one USB 2.0 Dual Role port. The xHCI host > > controller in the SoC complies with USB standard 1.1 and 2.0 with > > high-speed, full-speed and low-speed USB signalling. Note USB Dual > > Role is only supported under Linux. The port is a standard USB Host > > port under Windows." > > Maybe some configuration in my .config is missing ? (I enabled all > > controllers in device-drivers->usb->usb-> gadget->usb peripheral > > control , so I am not sure what is still missing) > > do you have the PCI device enabled? what do you get with lspci -nnnn ? > Yes, here it is: 00:00.0 Host bridge [0600]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Host Bridge [8086:5af0] (rev 0b) 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:5a85] (rev 0b) 00:0e.0 Audio device [0403]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Audio Cluster [8086:5a98] (rev 0b) 00:0f.0 Communication controller [0780]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Trusted Execution Engine [8086:5a9a] (rev 0b) 00:12.0 SATA controller [0106]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SATA AHCI Controller [8086:5ae3] (rev 0b) 00:13.0 PCI bridge [0604]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series PCI Express Port A #1 [8086:5ad8] (rev fb) 00:14.0 PCI bridge [0604]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series PCI Express Port B #1 [8086:5ad6] (rev fb) 00:15.0 USB controller [0c03]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series USB xHCI [8086:5aa8] (rev 0b) 00:1b.0 SD Host controller [0805]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SDXC/MMC Host Controller [8086:5aca] (rev 0b) 00:1c.0 SD Host controller [0805]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series eMMC Controller [8086:5acc] (rev 0b) 00:1f.0 ISA bridge [0601]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Low Pin Count Interface [8086:5ae8] (rev 0b) 00:1f.1 SMBus [0c05]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SMBus Controller [8086:5ad4] (rev 0b) 02:00.0 Ethernet controller [0200]: Intel Corporation I210 Gigabit Network Connection [8086:157b] (rev 03) Thank you, ranran > -- > balbi
