[OpenWrt-Devel] USB Hotplug

[John Crispin]

On 16/03/2016 14:25, Baptiste Clenet wrote:
> 2016-03-07 15:19 GMT+01:00 John Crispin <blogic at openwrt.org>:
>>
>>
>> On 07/03/2016 15:00, Baptiste Clenet wrote:
>>> 2016-03-07 9:51 GMT+01:00 John Crispin <john at phrozen.org>:
>>>>
>>>>
>>>> On 07/03/2016 09:47, Baptiste Clenet wrote:
>>>>> 2016-03-04 18:24 GMT+01:00 John Crispin <john at phrozen.org>:
>>>>>>
>>>>>>
>>>>>> On 04/03/2016 17:50, Baptiste Clenet wrote:
>>>>>>> We don't use the current tree but a version from November.
>>>>>>> You're talking about this changeset:
>>>>>>> https://dev.openwrt.org/changeset/48749
>>>>>>>
>>>>>>> I will apply it and let you know if it is better.
>>>>>>>
>>>>>>>>>>>
>>>>>>
>>>>>>
>>>>>> yep, try adding that one please and see if that fixes the issue
>>>>>> _______________________________________________
>>>>>> openwrt-devel mailing list
>>>>>> openwrt-devel at lists.openwrt.org
>>>>>> https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
>>>>>
>>>>> John, I chose Default profile for mt7688 board and it has built an
>>>>> image named "openwrt-ramips-mt7688-LinkIt7688-squashfs-sysupgrade.bin",
>>>>> so it used the LINKIT7688 dts instead of MT7628 dts.
>>>>>
>>>>> Concerning USB, I see the same behaviour, if the pendrive is plugged
>>>>> between the boot, it works and I can plug it in and out as much as I
>>>>> can, however, it the board boots and then I insert the pendrive, it is
>>>>> not detected (the pendrive's led switches on for 1/2sec and then
>>>>> switches off.
>>>>
>>>> seen this before while building pcbs .. so my money is on the following
>>>> theory: your power supply is failing to provide enough current quickly
>>>> enough for the USB to come up causing OC protection or similar to shut
>>>> it down. check your supply voltage of the usb port with a scope and you
>>>> will probably see it breakdown after that 1/2 s
>>>
>>> Yes it was a hardware problem effectively, I added a protection chip
>>> which did not work properly and caused the pendrive not to be
>>> detected. I removed it and it works, so I will dig into the hardware
>>> problem.
>>> Thanks
>>
>> we are a software project so awesome we can even remote debug hardware
>> problems :-)
>>
>>
>>>>
>>>>
>>>>
>>>>
>>>>> Second question; I see you added the mt76 wifi driver which is great!
>>>>> Thank you for your work. I see the module added on the board, how may
>>>>> I up the wifi? (I didn't find any readme on github [1])
>>>>
>>>> its a normal mac80211 based wifi so use the normal method. you will need
>>>> to add a eeprom offset to the dts file. either figure it out yourself
>>>> (look at how mt7620 based boards do it) or wait a few days till i had
>>>> time to update the lks7688 profile.
> 
> John, have you had time to update mt7688 board for wifi setup?
> 

let me check the commit log for you ...

... nope i cant find a commit that adds the support ;) i hope to have
time start of next week.

>>>>
>>> I let you do the edits and I will try as soon as you've done it.
>>> Thanks for your help
>>
>> ok
> 
> 
> 
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