Re: [PATCH net-next] net: stmmac: Fix E2E delay mechanism

[G Thomas, Rohan]

Hi Andrew,

On 11/25/2025 9:56 PM, Andrew Lunn wrote:
> On Tue, Nov 25, 2025 at 10:50:02PM +0800, Rohan G Thomas via B4 Relay wrote:
> > From: Rohan G Thomas <rohan.g.thomas@xxxxxxxxxx>
> >
> > For E2E delay mechanism, "received DELAY_REQ without timestamp" error
> > messages shows up for dwmac v3.70+ and dwxgmac IPs.
> >
> > This issue affects socfpga platforms, Agilex7 (dwmac 3.70) and
> > Agilex5 (dwxgmac). According to the databook, to enable timestamping
> > for all events, the SNAPTYPSEL bit in the MAC_Timestamp_Control
> > register must be set to 2'b00, and the TSEVNTENA bit must be cleared
> > to 0'b0.
> >
> > Commit 3cb958027cb8 ("net: stmmac: Fix E2E delay mechanism") already
> > addresses this problem for all dwmacs above version v4.10. However,
> > same holds true for v3.70 and above, as well as for dwxgmac. Updates
> > the check accordingly.
> >
> > Fixes: 14f347334bf2 ("net: stmmac: Correctly take timestamp for PTPv2")
> > Fixes: f2fb6b6275eb ("net: stmmac: enable timestamp snapshot for required PTP packets in dwmac v5.10a")
> > Fixes: 3cb958027cb8 ("net: stmmac: Fix E2E delay mechanism")
>
> Given the list of Fixes: do you want this back ported to stable? If
> so, you should not submit it for net-next.
>
> 	Andrew

Thanks! Sure, I will send the next version to net instead of net-next.

Best Regards,
Rohan