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SubjectRe: [PATCH v16 0/4] Introduce usb charger framework to deal with the usb gadget power negotation
Hi Felipe,

On 5 October 2016 at 15:47, Felipe Balbi <> wrote:
> Hi Baolin,
> Baolin Wang <> writes:
>>>> But you do!
>>>> The mA number from the USB configuration is passed to usb_gadget_vbus_draw.
>>>> Your patch passes that to usb_charger_set_cur_limit_by_type()
>>>> which calls __usb_charger_set_cur_limit_by_type() which will set the
>>>> cur_limit for whichever type uchger->type currently is.
>>>> So when it is not relevant, your code *does* set some current limit.
>>> Suppose the charger type is DCP(it is not relevant to the mA number
>>> from the USB configuration ), it will not do the USB enumeration, then
>>> no USB configuration from host to set current.
>> From the talking, there are some issues (thanks for Neil's comments)
>> need to be fixed as below:
>> 1. Need to add the method getting charger type from extcon subsystem.
>> 2. Need to remove the method getting charger type from power supply.
>> 3. There are still some different views about reporting the maximum
>> current or minimum current to power driver.
>> Now the current v16 patchset can work well on my Spreadtrum platform
>> and Jun's NXP platform, if you like to apply this patchset then I can
>> send out new patches to fix above issues. If you don't like that, I
>> can send out new version patchset to fix above issues. Could you give
>> me some suggestions what should I do next step? Thanks.
> Merge window just opened, nothing will happen for about 2 weeks. How
> about you send a new version after merge window closes and we go from
> there? Fixing 1 and 2 is needed. 3 we need to consider more

Sure. I will send out the new version with fixing these issues. Thanks.

> carefully. Perhaps report both minimum and maximum somehow?
> Neil, comments?
> --
> balbi

Best Regards

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