On Thu, 2016-08-04 at 11:12 +0200, Marek Vasut wrote:
On 08/04/2016 11:07 AM, Alban Bedel wrote:
On Wed, 3 Aug 2016 15:23:30 +0000 Marcel Ziswiler marcel.ziswiler@toradex.com wrote:
On Wed, 2016-08-03 at 15:51 +0200, Marek Vasut wrote:
On 08/03/2016 11:46 AM, Alban Bedel wrote:
On Wed, 3 Aug 2016 09:00:42 +0200 Marek Vasut marex@denx.de wrote:
On 08/03/2016 07:32 AM, Alban Bedel wrote: > > > Commit 147271209a9d ("net: asix: fix operation without > eeprom") > added a special handling for ASIX 88772B that enable > another > type of header. This break the driver in DM mode as the > extra > handling > needed in the receive path is missing. So add the extra handling ?
I can do that too, but I though u-boot preferred to avoid useless code.
Yes, if it is useless.
> > > However this new header mode is not required and only > seems to > increase the code complexity, so this patch revert this > part of > commit 147271209a9d. Why is it not required ?
It works fine without, since 2012. In fact this change is not even mentioned in the log of commit 147271209a9d, so I really don't know why it was added in the first place. As can be seen in the revert all it does is adding 2 bytes to the USB packets that are then just skipped. Seems pretty useless to me.
I would like to get some feedback on this from Marcel, since he added this stuff.
Yes, sorry. I just came back from vacation and started looking into it now. As far as I remember on our hardware without this Ethernet did not quite work reliably. This also means that with driver model so far it does not work for us which I fed back to Simon once but so far this has not been resolved. That fix came from some early U-Boot work done by Antmicro way back and I am missing some of the history.
Then I'll do a new patch that just fix the driver model receive path.
Hold on. Marcel, can you maybe test if removing this code has any impact on the behavior now ?
Sorry for the delay. I tested Alban's patch now both on Toradex Colibri T20 as well as T30 and its on-module ASIX USB-to-Ethernet chip actually works perfectly aside from the occasional EHCI timed out on TD - token=0x88008d80 Rx: failed to receive: -5 message which last I checked with Simon is still unresolved but was already there long before any of the driver model work started.
Tested-by: Marcel Ziswiler marcel.ziswiler@toradex.com Tested-on: Colibri T20/T30 on Colibri Evaluation Board