[OpenWrt-Devel] USB Hotplug

[Baptiste Clenet]

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?

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



-- 
Baptiste
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