[U-Boot] [PATCH] net: ravb: Avoid unsupported internal delay mode for R-Car E3/D3

[Marek Vasut]

On 5/9/19 8:56 PM, Joe Hershberger wrote:
> On Wed, May 1, 2019 at 5:36 PM Marek Vasut <marek.vasut at gmail.com> wrote:
>>
>> According to the R-Car Gen3 Hardware Manual Rev 1.50 of Nov 30, 2018, the
>> TX clock internal delay mode isn't supported on R-Car E3 (r8a77990) or D3
>> (r8a77995).
>>
>> Avoid setting the APSR:TDM bit on these SoCs. Moreover, only set APSR:TDM
>> when the DT explicitly specifies RGMII ID or TXID mode instead of setting
>> it unconditionally when the PHY link speed is 1000 Mbit/s.
> 
> We just ran into an issue with a very similar patch.  It blocked my
> tree being merged for a few months. Finally got to the bottom of it.
> https://patchwork.ozlabs.org/patch/1096572/
> 
> Are you sure there are no boards depending on the broken DT, like the
> 335-evm was?

I cannot be sure, but the boards which are supported and tested work
fine. If someone runs into any issue. they can raise them, and we'll
solve the problem when we come to that bridge.

-- 
Best regards,
Marek Vasut