DRA76P: using 488d0000.usb as usb gadget for adb (SDK v6AO.1.1)

Miguel Garcia3

Prodigy 180 points

Part Number: DRA76P
Other Parts Discussed in Thread: J6EVM5777

Hi,

I have the j6evm5777 using android SDK v6AO.1.1 all the SW and the HW is by default.

To connect via adb, the usb configured is the usb 48890000.usb.

I want to use the usb 488d0000.usb but if I can't. I checked /sys/class/udc and I can only see 48890000.usb

In the "USB Composite Gadget Using CONFIG-FS on DRA7xx Devices" doc the example is with the 48890000.usb.

Is it possible to configure the 488d0000.usb as gadget to use adb over it.

Best regards,

Miguel

over 4 years ago

0 Vishal Mahaveer over 4 years ago

TI__Mastermind 33030 points

Hi Miguel,

To change the USB port used for ADB, in Android file system only updating the sys.usb.controller value in enough.
http://git.omapzoom.org/?p=device/ti/jacinto6evm.git;a=blob;f=init.jacinto6evmboard.usb.rc;h=bc12a3243e1e57c4b2c66368e425c8e969b826ed;hb=refs/heads/d-oreo-mr1-release#l25

On the kernel side at the minimum you have to change the dr_mode of usb2 node to "device" or "otg". The usb2 port is configured by default to host mode.
git.omapzoom.org/

Regards,
Vishal

0 Miguel Garcia3 over 4 years ago in reply to Vishal Mahaveer

Prodigy 180 points

Thanks Vishal,

This solution doesn't work for us. Sure we have another issue, thank you for your reply.

Best regards,

Miguel

0 Vishal Mahaveer over 4 years ago in reply to Miguel Garcia3

TI__Mastermind 33030 points

When you tried this, what was the mode of 48890000.usb? Can you make this usb1 as host and try?

0 Miguel Garcia3 over 4 years ago in reply to Vishal Mahaveer

Prodigy 180 points

dts:

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&usb1 {
    dr_mode = "host";
};
&usb2 {
    dr_mode = "device";
};
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

&usb1 {
    dr_mode = "host";
};

&usb2 {
	dr_mode = "device";
};

UDC:

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$ ls /sys/class/udc/                                                
488d0000.usb
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

$ ls /sys/class/udc/                                                
488d0000.usb

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$ cat /sys/kernel/debug/48890000.usb/mode                             
host
$ cat /sys/kernel/debug/488d0000.usb/mode                             
OTG
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

$ cat /sys/kernel/debug/48890000.usb/mode                             
host
$ cat /sys/kernel/debug/488d0000.usb/mode                             
OTG

init.usb.rc

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setprop sys.usb.controller 488d0000.usb
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

setprop sys.usb.controller 488d0000.usb

We can't set the 488d0000.usb in mode device is always in mode OTG. But we can put it in mode host if we change it in the dtb.

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DRA76P: using 488d0000.usb as usb gadget for adb (SDK v6AO.1.1)