About the linux usb hotplug issue on AM335X:no usb hotplug msg or event when plugin/plugout usb gadget device-TI中文支持网

hello,

there is a issue, i can't get any msg or event when plugin/plugout usb gadget device on AM335X;

and the following is some message when i plugin or plugout usb mass storage gadget device;

1. plugin the usb mass storage device in AM335X board, print the following msg:

root@am335x-evm:/media/card# [ 227.138070] musb g_mass_storage gadget disconnec

ted.

[ 227.894687] gadget: high-speed config #1: Linux File-Backed Storage

2. plugout the usb mass storage device in AM335X board, on any msg is printing:

3. plugin the usb mass storage device in AM335X board again, print the following msg:

root@am335x-evm:/media/card# [ 240.147903] musb g_mass_storage gadget disconnec

ted.

[ 240.903177] gadget: high-speed config #1: Linux File-Backed Storage

root@am335x-evm:/media/card#

it seems that when plugin usb gadget devce again, it shall disconnect the usb device firstly, and then reconnect the usb device again;

so my question is how can I know whether USB gadget device has been plugged out/in?

thanks in advance!

请问您是说，通过device接口，接到电脑上，然后插拔sd卡么？

回复 Yaoming Qin:

AM335X的板子通过USB接上一个PAD（或手机），然后插拔PAD，发现插入时AM335x主板可以识别出来；但是拔掉时，没有任何信息；

回复 yu zheng:

能不能把全部的demsg发上来看看，另外，请问您用的是ezsdk 什么版本？在ti的板子上能重现吗

About the linux usb hotplug issue on AM335X:no usb hotplug msg or event when plugin/plugout usb gadget device