Re: [EXTERNAL] Re: [EXTERNAL] Re: [EXTERNAL] Re: [EXTERNAL] Re: [PATCH v4 2/2] net: ti: icssg-prueth: Add ICSSG ethernet driver

[Md Danish Anwar <a0501179@ti.com>]

On 09/02/23 19:24, Andrew Lunn wrote:
>> Sure, I'll do that. In the list of all phy modes described in [1], I can only
>> see phy-mode "rgmii-txid", for which we can return -EINVAL. Is there any other
>> phy-mode that requires enabling/disabling TX internal delays? Please let me
>> know if any other phy-mode also needs this. I will add check for that as well.
> 
> There are 4 phy-modes for RGMII.
> 
> rgmii, rgmii-id, rmgii-rxid, rgmii-txid.
> 
> rgmii-id, rgmii-txid both require TX delays. If you do that in the MAC
> you then need to pass rgmii-rxid and rgmii to the PHY respectively.
> 
> rmii and rgmii-rxid requires no TX delays, which your SoC cannot do,
> so you need to return -EINVAl,
> 
> The interpretation of these properties is all really messy and
> historically not very uniformly done. Which is why i recommend the MAC
> does nothing, leaving it to the PHY. That generally works since the
> PHYs have a pretty uniform implementation. But in your case, you don't
> have that option. So i suggest you do what is described above. 
> 
>     Andrew

Sure Andrew, I will post new revision with the changes described above.

-- 
Thanks and Regards,
Danish.