Re: [PATCH] [RFC] usb: dwc2: Run the core connect in dwc2_hcd_init()

[Marek Vasut <marex@denx.de>]

On 4/22/20 3:45 PM, Minas Harutyunyan wrote:
> Hi,

Hi,

> On 4/20/2020 4:09 PM, Marek Vasut wrote:
>> On 4/17/20 11:00 AM, Minas Harutyunyan wrote:
>>> Hi,
>>
>> Hi,
>>
>>> On 4/16/2020 6:31 PM, Marek Vasut wrote:
>>>> On 4/16/20 3:37 PM, Minas Harutyunyan wrote:
>>>
> Looks like I found cause of issue. According to your logs GINTMSK set 
> host masks, at least USB Reset not unmasked which required for device mode.
> Why it happen. During dwc2 driver probe first initialized device part 
> then host part. Because of your g_zero is builtin in Kernel it 
> immediately bound to dwc2, as result called main device initialization 
> dwc2_hsotg_core_init_disconnected() which at least set GINTMSK for 
> device mode. After gadget side initialization done, dwc2 go to host 
> initialization hcd_init() and reset GINTMSK to host masks. In this case 
> connecting cable to host will ignore USBReset and stacked. Your initial 
> patch including call to function dwc2_hsotg_core_init_disconnected(), 
> which allow to restore device mode masks and on cable connect start 
> working as device.
> First to check my assumption, please build g_zero as module and modprobe 
> it after dwc2 modprobe will be done. If the tests will pass then will 
> think how resolve issue with builtin functions.

Using g_zero as a module seems to work too, so please proceed.