[OpenWrt-Devel] USB Hotplug

[John Crispin]

On 16/03/2016 15:42, Baptiste Clenet wrote:
> 2016-03-16 14:46 GMT+01:00 John Crispin <john at phrozen.org>:
>>
>>
>> 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.
>>
> Ok, could you let me know when you're done with that please?
> Thanks


sure, i'll send you a mail

	John
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