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Hi all,
I am too trying to make the mini usb0 port to work as a host and slave mode an AM335x processor based custom board and the linux-3.14.26-g2489c02(SDK8), Earlier I was used linux 3.12 kernel(sdk7) which was working fine without any modification, now I am changing to 3.14 kernel.but I am unable detect any mass storage device(host mode) and slave mode also not working.
Is there any way to find whether the linux 3.14 (sdk8) support OTG or not?
Thanks&Regards
N shankar.
Hi,
I will forward this to the USB experts.
shankar naragoni said:now I am changing to 3.14 kernel.but I am unable detect any mass storage device(host mode) and slave mode also not working.
If you use the prebuilt binaries from SDK8, this should work.
Or if you rebuild the SDK8 kernel, please ensure to use singlecore-omap2plus_defconfig when configure the kernel.
If the test still fails, please attach the full kernel boot log and your .config file.
Thank you for your reply,
I was cross compiled with singlecore-omap2plus_defconfig & I was tested in custom board but unable see any usb detection in console.
PFA for kernel log file and .config file
ex: make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- singlecore-omap2plus_defconfig
Thanks & Regards
N shankar
shankar naragoni said:PFA for kernel log file and .config file
Those links are not accessible. Please attach again.
Hi Bin Liu,
Now I able to see musb modules on console but i am unable detect mini usb0 port.
Please check bellow messages.
1. root@am335x-evm:/lib/modules/3.14.26/kernel/drivers/usb/phy# lsmod
Module Size Used by
phy_twl6030_usb 4542 0
xhci_hcd 99598 0
omap2430 7134 1 phy_twl6030_usb
cpufreq_userspace 1324 1
musb_dsps 7287 0
musb_hdrc 54294 2 omap2430,musb_dsps
radio_tunstall 7180 0
lm75 4605 0
musb_am335x 1217 0
root@am335x-evm:/lib/modules/3.14.26/kernel/drivers/usb/phy#
2. root@am335x-evm:# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
3. root@am335x-evm:/lib/modules/3.14.26/kernel/drivers/usb/phy# dmesg | grep usb
[ 0.376753] usbcore: registered new interface driver usbfs
[ 0.377205] usbcore: registered new interface driver hub
[ 0.377670] usbcore: registered new device driver usb
[ 1.732774] usbcore: registered new interface driver asix
[ 1.738945] usbcore: registered new interface driver ax88179_178a
[ 1.745746] usbcore: registered new interface driver cdc_ether
[ 1.752407] usbcore: registered new interface driver smsc95xx
[ 1.758892] usbcore: registered new interface driver net1080
[ 1.765215] usbcore: registered new interface driver cdc_subset
[ 1.771880] usbcore: registered new interface driver zaurus
[ 1.778226] usbcore: registered new interface driver cdc_ncm
[ 1.804032] usbcore: registered new interface driver cdc_wdm
[ 1.810502] usbcore: registered new interface driver usb-storage
[ 1.986287] usbcore: registered new interface driver usbhid
[ 1.992218] usbhid: USB HID core driver
[ 7.945916] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401300[0]'
[ 7.946006] 47401300.usb-phy supply vcc not found, using dummy regulator
[ 8.090704] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/usb@47400000/usb-phy@47401b00[0]'
[ 8.090792] 47401b00.usb-phy supply vcc not found, using dummy regulator
[ 12.496816] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[ 12.496859] musb-hdrc: MHDRC RTL version 2.0
[ 12.496871] musb-hdrc: setup fifo_mode 4
[ 12.496894] musb-hdrc: 28/31 max ep, 16384/16384 memory
[ 12.497031] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver
[ 12.813040] musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1
[ 13.038189] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 13.045435] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 13.053053] usb usb1: Product: MUSB HDRC host driver
[ 13.058278] usb usb1: Manufacturer: Linux 3.14.26 musb-hcd
[ 13.064058] usb usb1: SerialNumber: musb-hdrc.0.auto
[ 13.277733] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[ 13.277784] musb-hdrc: MHDRC RTL version 2.0
[ 13.277796] musb-hdrc: setup fifo_mode 4
[ 13.277817] musb-hdrc: 28/31 max ep, 16384/16384 memory
[ 13.277954] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[ 13.542390] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 2
[ 13.592169] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 13.599333] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 13.606954] usb usb2: Product: MUSB HDRC host driver
[ 13.612192] usb usb2: Manufacturer: Linux 3.14.26 musb-hcd
[ 13.617961] usb usb2: SerialNumber: musb-hdrc.1.auto
Thanks
N shankar
shankar naragoni said:Now I able to see musb modules on console but i am unable detect mini usb0 port.
Please provide the output of the following commands:
# cat /sys/class/udc/musb-hdrc.0.auto/uevent
# grep -i 'devctl\|power' /sys/kernel/debug/musb-hdrc.0.auto/regdump
Hi Bin Liu,
Thank you for your reply, please find the bellow commands ouput.
root@am335x-evm:~# cat /sys/class/udc/musb-hdrc.0.auto/uevent
USB_UDC_NAME=musb-hdrc
335x-evm:~# grep -i 'devctl\|power' /sys/kernel/debug/musb-hdrc.0.auto/regdumpam
Power : 20
DevCtl : 80
root@am335x-evm:~#
The log indicates there is no any gadget driver loaded for the OTG port. You should load a (any) gadget driver to let the OTG port work in both host mode and gadget mode.
Hi,
I was enable gadget driver in 3.14 kernel configuration as per 3.12 kernel menuconfig, but how can i know which drivers are loaded for usb otg port, but I want load gadget drivers are load statically. i think g_mass storage gadget drivers missing, Please tell me exactly where can I change in kernel configuration.
Thanks
N Shankar
shankar naragoni said:PFA for 3.14 .config file.
Please double check the file you provided. It does not match with the log you provided before. Your previous 'lsmod' shows musb_dsps module is loaded, but this .config has '# CONFIG_USB_MUSB_DSPS is not set' which means musb_dsps is not compiled.
Hi Bin Liu,
Sorry for my mistake, That was incorrect .config file, Please PFA for 3.14 .config file and please share me what are the modules required for usb0 otg in kernel configuration.
Thanks
N shankar..config_new.7z
The kernel config looks correct. So now you only have to use 'modprobe' command to load the gadget driver you want. Which driver to load? it is up to your application. For exmaple, if you want MUSB to be a thumb drive, do
# modprobe g_mass_storage <with neccessary parameters>
Thanks Bin Liu,
Finally I was able detect usb flash disk and sd card using bellow commands
root@am335x-evm:~# modprobe g_mass_storage file=/dev/sda1
root@am335x-evm:~# modprobe g_mass_storage file=/dev/mmcblk0
But my task if any usb flash drive connect/disconnect to custom board based on BBB which is notify to user space application. can you share the details of mount and auto mount of usb flash devices at run time.
Thanks
N shankar
shankar naragoni said:can you share the details of mount and auto mount of usb flash devices at run time.
This is a generic Linux question, it all depends on your filesystem.
But one common way is using udev. If your filesystem has udev support, an udev event will be generated when the device node of a block device (for example, /dev/sda or /dev/mmcblk0) is created or removed. Then you can have an udev rule to handle these events to mount and umount the block device at runtime.
Hi Bin Liu,
I am using ti_rootfs, n I was check udev binaries in bin directory but I unable to find udevadm related binaries, please tell me how to add udev support in ti_rootfs(sdk 7), i able to see udev rules under /etc/udev/rules.d/. we used compiled rootfs from TI so please provide binaries for udev.
N shankar.
Hi Bin Liu,
I got it, Thanks for your supporting.
Now I am doing USB Tethering for custom board based on BBB reference.
I am too trying to make the mini usb0 port to work as USB Tethering an AM335x processor based custom board and the linux-3.14.26-g2489c02(SDK8) but unable connect internet over android based mobile phone.
Is there any way to find whether the linux 3.14 (sdk8)/am335x support USB Tethering or not? Please share the details of USB Tethering support for am335x processor.
I was changed CDC related settings in kernel configuration and when connect my mobile phone to custom board i got some log messages please find the bellow.
root@am335x-evm:~# modprobe g_ether
[ 90.529092] using random self ethernet address
[ 90.533937] using random host ethernet address
[ 90.546104] usb0: HOST MAC 6e:71:75:ff:5f:9e
[ 90.562222] usb0: MAC 1a:e2:38:7c:0e:e2
[ 90.566433] using random self ethernet address
[ 90.571114] using random host ethernet address
[ 90.590848] g_ether gadget: Ethernet Gadget, version: Memorial Day 2008
[ 90.597951] g_ether gadget: g_ether ready
root@am335x-evm:~# [ 91.206814] g_ether gadget: high-speed config #1: CDC Ethernet (ECM)
root@am335x-evm:~# ifconfig -a
usb0 Link encap:Ethernet HWaddr 1A:E2:38:7C:0E:E2
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Thanks
N shankar
shankar naragoni said:Is there any way to find whether the linux 3.14 (sdk8)/am335x support USB Tethering or not?
This forum only supports Sitara devices with Linux, please post Android related questions to the Android forums or search on the Web.
Hi Bin Liu,
We are design a custom board based on am335x processor(BBB reference) and kernel 3.14 (SDK 8) I am trying make network connection for our custom board through usb tethering concept. but i am unable to access please share details of kernel 3.14(sdk 8) configuration settings.
Thanks
N shankar.
ya exactly right , my phone having usb tethering support and which act as host and my AM335x custom board act as peripheral. can you give me support for usb over network configuration am335x custom board.
Thanks
N shankar
Okay, you almost got there ;)
You have loaded g_ether gadget driver on the board, it created usb0 interface; when connected the board to the phone, the phone should also create a new usb0 interface. The next step is to assign the IP addresses on both usb0 interfaces.
- If you phone has DHCP server running, you can run dhcpc on the board for usb0 to request IP address:
# udhcpc -i usb0
Hi Bin Liu,
I got the below log messages for udhcpc -i usb0 command
#udhcpc -i usb0
udhcpc (v1.20.2) started
Sending discover...
Sending discover...
Sending discover...
No lease, failing
Can you give me suggestion above log.
Thanks
N sahnkar
shankar naragoni said:Sending discover...
No lease, failing
This seems telling the phone as a USB host does not have a dhcp server running.
Until this point, this problem is just a general network configuration issue, the AM335x board is a network device with a virtual NIC on the host (usb0). So you have to figure out how to configure the network on the phone which I am unable to help, but here are my comments:
- If you have the console access to the phone with root privilege, you can use static IP configuration: assigning static IP on 'usb0' interface on both the phone and the board.
- If you can get a dhcp server running on the phone, make sure the phone is able to assign an IP address to 'usb0' on the phone, then running udhcpc on the board should get the network up and running.
Hi Bin liu,
As for your suggestion our am335x board act as slave and phone act as host please clarify usb cable connection i was liitle bit confused on the usb plugin. which one slave and which one host .
when I plugin my mobile to board then unable see usb tethering option was disable, but when I was connect my mobile to ubuntu/windows pc then i able see usb tethering option, can you tell me if any drivers need for our SDK8.
Thanks
N Shankar
Hi Bin Liu,
In USB Tethering configuration am335xx custom board acts as slave or host. please tell me usb otg interfacing.
Thanks,
shankar
Shankar,
shankar naragoni said:As for your suggestion our am335x board act as slave and phone act as host
I did not suggest that. It was your post describing that the AM335x board is acting as host while the phone is connected.
shankar naragoni said:but when I was connect my mobile to ubuntu/windows pc then i able see usb tethering option
I don't know much about USB tethering, but this tells in tethering the phone is USB device, and the am335x board should be the USB host.
Hi bin Liu,
Thank you,
rndis_host driver registration missing on linux( kernel 3.12 sdk 7)
1) when I plugin my mobile to Ubuntu pc(12.04) then I seen below log messages
telxsi@telxsi-Latitude-3440:~$ dmesg
[ 2379.830024] usb 1-1.3: USB disconnect, device number 20
[ 2379.832267] rndis_host 1-1.3:1.0 usb0: unregister 'rndis_host' usb-0000:00:1d.0-1.3, RNDIS device
[ 2430.996116] usb 1-1.3: new high-speed USB device number 21 using ehci-pci
[ 2431.089903] usb 1-1.3: New USB device found, idVendor=04e8, idProduct=6863
[ 2431.089913] usb 1-1.3: New USB device strings: Mfr=2, Product=3, SerialNumber=4
[ 2431.089919] usb 1-1.3: Product: SAMSUNG_Android
[ 2431.089923] usb 1-1.3: Manufacturer: SAMSUNG
[ 2431.089928] usb 1-1.3: SerialNumber: 4300bf412f0050eb
[ 2431.094620] rndis_host 1-1.3:1.0 usb0: register 'rndis_host' at usb-0000:00:1d.0-1.3, RNDIS device, 02:00:37:34:32:61
2) After that I plugin my mobile phone to custom board , I am unable find usb register with rndis_host log message on console , I seen below log message
root@am335x-evm:~# [ 1261.129472] usb 2-1: USB disconnect, device number 2
[ 1261.577255] usb 2-1: new high-speed USB device number 3 using musb-hdrc
[ 1261.718512] usb 2-1: New USB device found, idVendor=17ef, idProduct=7500
[ 1261.725550] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1261.733057] usb 2-1: Product: Android
[ 1261.736897] usb 2-1: Manufacturer: Android
[ 1261.741201] usb 2-1: SerialNumber: dfd3f21c
3) How to configure rndis related driver in kernel 3.14
Thanks
N sahnkar
Please check the option CONFIG_USB_NET_RNDIS_HOST is set in your .config. In menuconfig the option is located as:
Device Drivers --->
Network device support --->
USB Network Adapters --->
Host for RNDIS and ActiveSync devices
The RNDIS support for both usb0 and usb1 port why because I am using mini usb0(otg) for tethering and I got usb tethering on bbb board on host side usb1, Now I was trying usb0 but its not working, Is RNDIS driver suport for both usbs,in our board usb1 used for Bluetooth interface.
Thanks & Regards
N Shankar
Hi Bin Liu,
In dts file:
usb@47401000 {
status = "okay";
dr_mode = "otg";
};
usb@47401800 {
status = "okay";
/*dr_mode = "host";*/ //COMMENTED for USB1 to UART3
};
But when I plug in my mobile to board, I got below error.
root@am335x-evm:/home# [ 3484.903898] usb 1-1: new high-speed USB device number 2 using musb-hdrc
[ 3485.024038] usb 1-1: device descriptor read/64, error -71
[ 3485.253873] usb 1-1: device descriptor read/64, error -71
[ 3485.483894] usb 1-1: new high-speed USB device number 3 using musb-hdrc
[ 3485.603934] usb 1-1: device descriptor read/64, error -71
Thanks
N shankar
shankar naragoni said:root@am335x-evm:/home# [ 3484.903898] usb 1-1: new high-speed USB device number 2 using musb-hdrc
[ 3485.024038] usb 1-1: device descriptor read/64, error -71
This means USB host reading data from the device is failed. There are multiple issues which can cause this problem.
Have you tried to connect other USB devices to see if the same issue happens, for example USB mouse/keyboard, thumb drives?
Hi Bin Liu,
Yes I have tried multipul HID and mass storage devices but I didnt get any issues only when i plugin vender specific devices(like moto g, samsung, nokia) to board and then seeing the same issue on all of them. we need to configure any host drivers for vender specific devices, could you tell me what are issues for above error, we used usb switch i.e FPF2006 which is current being limited to 150mA for USB on the board.
please find attached the usb otg switch schematic.
Thanks
N shankar.
Sorry Bin Liu I forgot attache usb switch schematic for above message, please find the attached file.
shankar naragoni said:we used usb switch i.e FPF2006 which is current being limited to 150mA for USB on the board.
This violates the USB 2.0 Spec, which requires the USB host to provide minimum 500mA.
Please refer to the similar discussion e2e.ti.com/.../1540427
Thanks for your continuous support,
For OTG Host Mode - USB0_DRVVBUS should be connected to a power switch(FPF2006) input, with Output being USB0_VBUS pin, when controller is going to Host Mode, it drives USB0_DRVVBUS High and waits for USBx_VBUS to become High within micro sec.
After that If I turn off USB0_DRVVBUS signal through application( gpio pin mux sysfs interface) what happens still our slave device working.
Please could you tell me how to controll usb power for slave devices and how to turn off USB0_DRVVBUS signal in driver level.
Thanks
N shankar.
shankar naragoni said:After that If I turn off USB0_DRVVBUS signal through application( gpio pin mux sysfs interface) what happens still our slave device working.
Do you mean the USB device still works after turned off USB0_DRVVBUS? If so, have you measured the VBUS voltage or the power swith output at this time?
shankar naragoni said:Please could you tell me how to controll usb power for slave devices
I still don't understand the requirement. Do you want the turn off VBUS and expect the device still works? If so, this is not defined in the USB Specs.
shankar naragoni said:and how to turn off USB0_DRVVBUS signal in driver level.
USB0_DRVVBUS is controlled by DEVCTL[SESSION] bit in the driver, I strongly discourage you to directly touch it unless you fully understand how MUSB controller and USB drivers work.
Thanks bin Liu,
I am new usb driver devlopment, actuall my requirement is usb0 otg(host/slave) configuration for low and high speed devices.
When I plugin multipul HID and mass storage devices to board but I didnt get any issues.
My problem was only when i plugin vender specific mobile devices(like moto g, samsung, nokia) to board, then seeing the issue for VBUS error and over current detection. For these reason I have tried to stop charging mobile devices(disable VBUS power through DRVBUS).
Could you please tell me reasons for VBUS error and over current detection for high speed devices.
Thanks in advance
N shankar
shankar naragoni said:then seeing the issue for VBUS error and over current detection.
Please ensure you have minimum 120uF cap on VBUS positioned close to the port. This is required by USB Specs. Lack of the cap could trigger VBUS error when plug in some USB device.
shankar naragoni said:For these reason I have tried to stop charging mobile devices(disable VBUS power through DRVBUS).
Okey, that exaplains the enumeration failure you posted before.
[ 3485.024038] usb 1-1: device descriptor read/64, error -71