[U-Boot] Ethernet via USB on Sinlinx SinA33

[Quentin Schulz <quentin.schulz@free-electrons.com>]

Hi,

On 11/04/2016 13:07, Hans de Goede wrote:
> Hi,
> 
> On 11-04-16 12:25, Quentin Schulz wrote:
>> Hi,
>>
>> On 06/04/2016 17:24, Hans de Goede wrote:
>>> Hi,
>>>
>>> On 29-03-16 08:38, Quentin Schulz wrote:
>>>> Hi,
>>>>
>>>> On 28/03/2016 14:56, Hans de Goede wrote:
>>>>> Hi,
>>>>>
>>>>> On 25-03-16 18:14, Quentin Schulz wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I am trying to get Ethernet to work through the USB port of the
>>>>>> Sinlinx
>>>>>> SinA33 on U-Boot to use TFTP to get the kernel and dtb files.
>>>>>>
>>>>>> However, I am getting 'data abort' when using dhcp or tftp after
>>>>>> adding:
>>>>>> #define CONFIG_USB_HOST_ETHER
>>>>>> #define CONFIG_USB_ETHER_ASIX
>>>>>>
>>>>>> to include/configs/sunxi-common.h and checking CONFIG_USB_EHCI_HCD as
>>>>>> told in the documentation [1]
>>>>>>
>>>>>> I tested this configuration with the C.H.I.P. and it is working well.
>>>>>
>>>>> Are you perhaps building u-boot with gcc6 ? There are some known
>>>>> issues
>>>>> when building u-boot with gcc-6, which look pretty much like this.
>>>>
>>>> No, I'm building with gcc-5:
>>>> $ arm-linux-gnueabihf-gcc --version
>>>> arm-linux-gnueabihf-gcc (Ubuntu 5.2.1-22ubuntu1) 5.2.1 20151010
>>>>
>>>>> Is the ethernet adapter connected to a regular usb host port, or to
>>>>> the otg port ?
>>>>
>>>> The Ethernet adapter is connected to the regular USB host port.
>>>
>>> So I've been debugging some armv7 cache issues lately and I've come
>>> up with the following fix:
>>>
>>> https://patchwork.ozlabs.org/patch/605967/
>>>
>>> This might very will fix your issue too. If not we're likely missing
>>> some cache flushing / invalidation in the usb driver for your usb
>>> host controller.
>>>
>>> Regards,
>>>
>>> Hans
>>
>> I actually tried uboot-sunxi repository (and then checked out on merge
>> commit in master for this repository) and it is working as expected: I
>> get Ethernet over USB.
>>
>> I tested with master (43d3fb5c0609a76409e7859a2a5800670c7b5bd2) and I
>> first get a reset of the board when starting USB (before I can enter
>> U-Boot command line) and then after the reboot, U-Boot hangs on starting
>> USB (still before the command line).
>>
>> I did a git bisect on master and it returned this commit:
>> http://git.denx.de/?p=u-boot.git;a=commit;h=3f9f8a5b83f8aec40c9f4ee496046a695e333c45
>>
> 
> Ah, that is fixed by this commit:
> 
> http://git.denx.de/?p=u-boot/u-boot-usb.git;a=commitdiff;h=cfb3f1cd0e022711d69ff040884357b8410865ef
> 
> 
> A pullreq for which was send this morning, so this should be fixed
> in master as soon as the u-boot-usb pull-req gets merged.
> 
> Regards,
> 
> Hans

Tested with the patch, the issue is solved. Thanks Hans!

Regards,

Quentin