[U-Boot] Ethernet via USB on Sinlinx SinA33

[Hans de Goede <hdegoede@redhat.com>]

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