Re: net: stmmac: dwmac-imx: half duplex crash

From: Andrew Lunn
Date: Sun Apr 24 2022 - 18:01:24 EST

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?