From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: rohan.g.thomas@altera.com
Cc: Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Richard Cochran <richardcochran@gmail.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
Fugang Duan <fugang.duan@nxp.com>,
Kurt Kanzenbach <kurt@linutronix.de>,
netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] net: stmmac: Fix E2E delay mechanism
Date: Tue, 25 Nov 2025 23:19:07 +0000 [thread overview]
Message-ID: <aSY5ayT0X_zFeYFs@shell.armlinux.org.uk> (raw)
In-Reply-To: <20251125-ext-ptp-fix-v1-1-83f9f069cb36@altera.com>
On Tue, Nov 25, 2025 at 10:50:02PM +0800, Rohan G Thomas via B4 Relay wrote:
> From: Rohan G Thomas <rohan.g.thomas@altera.com>
>
> 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
bits
> register must be set to 2'b00, and the TSEVNTENA bit must be cleared
> to 0'b0.
Are you sure 3.70 is the appropriate point. According to the 3.74
databook, SNAPTYPSEL changed between 3.5 and 3.6.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2025-11-25 23:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-25 14:50 [PATCH net-next] net: stmmac: Fix E2E delay mechanism Rohan G Thomas
2025-11-25 14:50 ` Rohan G Thomas via B4 Relay
2025-11-25 16:26 ` Andrew Lunn
2025-11-26 4:24 ` G Thomas, Rohan
2025-11-25 23:19 ` Russell King (Oracle) [this message]
2025-11-26 6:01 ` G Thomas, Rohan
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