Banana Pi USB OTG

[chradev]

Hi Paolo,

 

First of all thanks for the help.
The USB port is enabled by default because i use it regularly for a keyboard and mouse.

 

Here the original (not modified) dts file if anyone can help me.

 

Paolo

 

 

For removing the error about 'usb0_id_detect' you have to remove:

* whole section usb0_id_detect_pin@0 { ... };

* following lines: pinctrl-0 = <0x2c>; usb0_id_det-gpio = <0x25 0x7 0x4 0x0>; from phy@01c13400 { ... }; section

* and: pinctrl-0 = <0x0>; usb0_id_det-gpio = <0x0>; from second phy@01c13400 { ... }; section

 

For setting of USB OTG in host only mode you have to change:

* dr_mode = "otg"; to dr_mode = "host"; in usb@01c13000 { ... }; section

 

USB OTH has to work in otg mode but it does not for me on Lime2-eMMC.
 

You also have to verify that required modules are enabled in Kernel and loaded as described here:

What I have done so far, is build the kernel using sunxi_defconfig and
enabled USB_MUSB_SUNXI with its dependancies (musb isn't enabled there
by default): USB_SUPPORT [=y] && USB_MUSB_HDRC [=y] && ARCH_SUNXI [=y]
&& NOP_USB_XCEIV [=y] && PHY_SUN4I_USB [=y] && EXTCON [=y] &&
GENERIC_PHY [=y]  Selects: SUNXI_SRAM [=y] 

Unfortunately, working with converted dtb to dts file is not good idea. The better way is to build your own Armbian image controlling the staff with corresponding patches.

 

Best regards

Chris

[erpomata]

And 'too much for me, I will wait that Igor makes us the gift.

Thank you

[Igor]

Few months ago I made an utility for easy switching between otg and host mode and it should be part of the build:

sunxi-musb 
OTG / HOST changer for DTB v1.0

sunxi-musb filename.dtb otg | host

Usage example: sunxi-musb sun4i-a10-mini-xplus.dtb otg

If not, it's here.

[erpomata]

Great Igor works perfectly

 

thank you

[erpomata]

I realized now that I no longer have the wlan0 interface.
I can do as well as replace the original file and losing the otg?

 

Thanks

[Igor]

Enabling OTG should not affect wlan feature. Are you sure you did not modify anything else?

 

Just try with original DTB too see if you got wifi back.

[erpomata]

No I have not changed anything else.
I thought it was a consequence of the change to dtb also putting back the original file instead of the thing does not change.
I open another topic.

Thank you

[neomanic]

I've now made this change (set 'otg' to 'host' and removed the pinctrl lines) to my lime2 dts so I can have the extra USB port available, and am doing it as part of my custom image build.

 

But given it's been a little while and a few kernel versions later, I was wondering whether there was any news on whether OTG mode works?

[chradev]

Hi Neomanic,

I've now made this change (set 'otg' to 'host' and removed the pinctrl lines) to my lime2 dts so I can have the extra USB port available, and am doing it as part of my custom image build.

 

But given it's been a little while and a few kernel versions later, I was wondering whether there was any news on whether OTG mode works?

I am using OTG in host mode for a long time and have other problem.

 

When my STM32-H405 board is connected as CDC device and communication (~160 kbps from H405 to Lime2) is started for a long periods of time (5-10 hours) without apparent reason device is disconnected but continue to be visible by 'lsusb' command. The only way to revert to working state is by rebooting the system.

 

A few months ago (earlier Kernel version) this problems have been happened much more frequently - after 1-2 hours. My investigation shown that some changes to musb driver have made the things better but did not solve the issue.

 

That is why I have decided to use USB Host ports for critical communications and USB OTG for optional once.

 

Best regards

Chris

[neomanic]

Yes, I have done the same and for similar reasons. I only use it for connecting my debug Ethernet adapter (main GBit one is to the network), as an attempt to test the OTG port using a flash drive caused a board lockup.

[Menion]

Apparently host mode of the BananaPi OTG USB port is not stable, or it is not stable with kernel 4.8.4

I have run fine DVB-T usb key in that port for a long while, then after the update to 4.8.4, what happens is that the USB DVB-T is detected and initialized fine, but the key doesn't just work, no stream nor valid info are received. And if I disconnect it while the system is running, I get 100% of the time a kernel panic.

This happens with two different DVB-T keys

[jose1711]

hello, any news about otg device mode on bananapi with kernel 4.12? thank you, jose