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Date: Mon, 25 Apr 2022 00:01:07 +0200 From: Andrew Lunn <andrew@...n.ch> To: Marcel Ziswiler <marcel.ziswiler@...adex.com> Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "alexandre.torgue@...s.st.com" <alexandre.torgue@...s.st.com>, "davem@...emloft.net" <davem@...emloft.net>, "kernel@...gutronix.de" <kernel@...gutronix.de>, "linux-imx@....com" <linux-imx@....com>, "linux-stm32@...md-mailman.stormreply.com" <linux-stm32@...md-mailman.stormreply.com>, "festevam@...il.com" <festevam@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "shawnguo@...nel.org" <shawnguo@...nel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>, "mcoquelin.stm32@...il.com" <mcoquelin.stm32@...il.com>, "pabeni@...hat.com" <pabeni@...hat.com>, "peppe.cavallaro@...com" <peppe.cavallaro@...com>, "joabreu@...opsys.com" <joabreu@...opsys.com>, "kuba@...nel.org" <kuba@...nel.org> Subject: Re: net: stmmac: dwmac-imx: half duplex crash On Sat, Apr 23, 2022 at 10:58:07PM +0000, Marcel Ziswiler wrote: > Hi there > > We lately tried operating the IMX8MPEVK ENET_QOS imx-dwmac driver in half-duplex modes which crashes as > follows: How many transmit queues do you have in operation: /* Half-Duplex can only work with single queue */ if (priv->plat->tx_queues_to_use > 1) priv->phylink_config.mac_capabilities &= ~(MAC_10HD | MAC_100HD | MAC_1000HD); What does ethtool show before you force it? Does it actually list the HALF modes? Andrew
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