fix for lantiq (danube) usb

[John Crispin]

On 03.07.20 21:07, Luca Olivetti wrote:
> El 3/7/20 a les 20:07, Luca Olivetti ha escrit:
>> El 3/7/20 a les 20:06, John Crispin ha escrit:
>>>
>>> On 03.07.20 19:57, Luca Olivetti wrote:
>>>> El 3/7/20 a les 19:49, John Crispin ha escrit:
>>>>>
>>>>> On 03.07.20 19:47, Luca Olivetti wrote:
>>>>>> El 3/7/20 a les 19:37, John Crispin ha escrit:
>>>>>>
>>>>>>>>>
>>>>>>>>> Why not use the gpio regulator ?
>>>>>>>>
>>>>>>>> Because I don't know how :-(
>>>>>>>>
>>>>>>> https://www.kernel.org/doc/Documentation/devicetree/bindings/regulator/fixed-regulator.yaml 
>>>>>>>
>>>>>>
>>>>>> Oh, I see, but that's the one I had to *remove* because it didn't 
>>>>>> work.
>>>>>>
>>>>>> Bye
>>>>>
>>>>>
>>>>> CONFIG_REGULATOR_GPIO is not enabled in the kernel config
>>>>>
>>>>
>>>>
>>>> So it's just a matter of adding it to 
>>>> target/linux/lantiq/xway/config-4.14 after
>>>>
>>>>
>>>> CONFIG_REGULATOR=y
>>>> CONFIG_REGULATOR_FIXED_VOLTAGE=y
>>>>
>>>>
>>>> ?
>>>>
>>>>
>>>> (and put back the entry I removed in the dts)
>>>>
>>>> Bye
>>>
>>>
>>> correct
>>>
>>
>>
>> Thank you, I'm building it now (but my system is slow). I'll report 
>> back if it works.
>
> Nope, it doesn't
>

printk the driver with a salt shaker and see if it loads and if so where 
it breaks



> # dmesg | grep dwc2
> [    5.751540] dwc2 1e101000.usb: 1e101000.usb supply vusb_d not 
> found, using dummy regulator
> [    5.758454] dwc2 1e101000.usb: 1e101000.usb supply vusb_a not 
> found, using dummy regulator
> [    5.766666] dwc2 1e101000.usb: dwc2_core_reset() HANG! Soft Reset 
> GRSTCTL=80000001
> [    5.912432] dwc2 1e101000.usb: DWC OTG Controller
> [    5.915747] dwc2 1e101000.usb: new USB bus registered, assigned bus 
> number 1
> [    5.922594] dwc2 1e101000.usb: irq 62, io mem 0x1e101000
> [    5.927811] dwc2 1e101000.usb: startup error -517
> [    5.932278] dwc2 1e101000.usb: USB bus 1 deregistered
> [    5.937340] dwc2 1e101000.usb: dwc2_hcd_init() FAILED, returning -517
> [   50.308465] dwc2 1e101000.usb: 1e101000.usb supply vusb_d not 
> found, using dummy regulator
> [   50.315362] dwc2 1e101000.usb: 1e101000.usb supply vusb_a not 
> found, using dummy regulator
> [   50.360539] dwc2 1e101000.usb: DWC OTG Controller
> [   50.363823] dwc2 1e101000.usb: new USB bus registered, assigned bus 
> number 1
> [   50.370726] dwc2 1e101000.usb: irq 62, io mem 0x1e101000
> [   50.375988] dwc2 1e101000.usb: startup error -517
> [   50.380385] dwc2 1e101000.usb: USB bus 1 deregistered
> [   50.385438] dwc2 1e101000.usb: dwc2_hcd_init() FAILED, returning -517
> [   50.457833] dwc2 1e101000.usb: 1e101000.usb supply vusb_d not 
> found, using dummy regulator
> [   50.464747] dwc2 1e101000.usb: 1e101000.usb supply vusb_a not 
> found, using dummy regulator
> [   50.472906] dwc2 1e101000.usb: dwc2_core_reset() HANG! Soft Reset 
> GRSTCTL=80000001
> [   50.632565] dwc2 1e101000.usb: DWC OTG Controller
> [   50.635942] dwc2 1e101000.usb: new USB bus registered, assigned bus 
> number 1
> [   50.642733] dwc2 1e101000.usb: irq 62, io mem 0x1e101000
> [   50.647992] dwc2 1e101000.usb: startup error -517
> [   50.652411] dwc2 1e101000.usb: USB bus 1 deregistered
> [   50.657463] dwc2 1e101000.usb: dwc2_hcd_init() FAILED, returning -517
> [   50.767275] dwc2 1e101000.usb: 1e101000.usb supply vusb_d not 
> found, using dummy regulator
> [   50.774183] dwc2 1e101000.usb: 1e101000.usb supply vusb_a not 
> found, using dummy regulator
> [   50.782345] dwc2 1e101000.usb: dwc2_core_reset() HANG! Soft Reset 
> GRSTCTL=80000001
> [   51.098453] dwc2 1e101000.usb: DWC OTG Controller
> [   51.101832] dwc2 1e101000.usb: new USB bus registered, assigned bus 
> number 1
> [   51.108645] dwc2 1e101000.usb: irq 62, io mem 0x1e101000
> [   51.113845] dwc2 1e101000.usb: startup error -517
> [   51.118306] dwc2 1e101000.usb: USB bus 1 deregistered
> [   51.123355] dwc2 1e101000.usb: dwc2_hcd_init() FAILED, returning -517
> [   86.412437] dwc2 1e101000.usb: 1e101000.usb supply vusb_d not 
> found, using dummy regulator
> [   86.419349] dwc2 1e101000.usb: 1e101000.usb supply vusb_a not 
> found, using dummy regulator
> [   86.427592] dwc2 1e101000.usb: dwc2_core_reset() HANG! Soft Reset 
> GRSTCTL=80000001
> [   86.620575] dwc2 1e101000.usb: DWC OTG Controller
> [   86.623972] dwc2 1e101000.usb: new USB bus registered, assigned bus 
> number 1
> [   86.630735] dwc2 1e101000.usb: irq 62, io mem 0x1e101000
> [   86.636020] dwc2 1e101000.usb: startup error -517
> [   86.640421] dwc2 1e101000.usb: USB bus 1 deregistered
> [   86.645483] dwc2 1e101000.usb: dwc2_hcd_init() FAILED, returning -517
>
>
> Bye