Re: [PATCH 1/2] net: phy: dp83867: enable robust auto-mdix

From: Andrew Lunn
Date: Wed Oct 23 2019 - 11:38:52 EST


On Wed, Oct 23, 2019 at 05:48:45PM +0300, Grygorii Strashko wrote:
> The link detection timeouts can be observed (or link might not be detected
> at all) when dp83867 PHY is configured in manual mode (speed/duplexity).
>
> CFG3[9] Robust Auto-MDIX option allows significantly improve link detection
> in case dp83867 is configured in manual mode and reduce link detection
> time.
> As per DM: "If link partners are configured to operational modes that are
> not supported by normal Auto MDI/MDIX mode (like Auto-Neg versus Force
> 100Base-TX or Force 100Base-TX versus Force 100Base-TX), this Robust Auto
> MDI/MDIX mode allows MDI/MDIX resolution and prevents deadlock."
>
> Hence, enable this option by default as there are no known reasons
> not to do so.
>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>

Reviewed-by: Andrew Lunn <andrew@xxxxxxx>

Andrew