Subject: Re: [net-next v23 2/7] net: mtip: The L2 switch driver for imx287

From: Jakub Kicinski <[email-masked]>
Date: Thu, 5 Feb 2026 18:28:05 -0800

On Thu,  5 Feb 2026 00:21:30 +0100 Lukasz Majewski wrote:
> This patch series provides support for More Than IP L2 switch embedded
> in the imx287 SoC.
> 
> This is a two port switch (placed between uDMA[01] and MAC-NET[01]),
> which can be used for offloading the network traffic.
> 
> It can be used interchangeably with current FEC driver - to be more
> specific: one can use either of it, depending on the requirements.
> 
> The biggest difference is the usage of DMA - when FEC is used, separate
> DMAs are available for each ENET-MAC block.
> However, with switch enabled - only the DMA0 is used to send/receive data
> to/form switch (and then switch sends them to respecitive ports).
> 
> Signed-off-by: Lukasz Majewski <[email-masked]>
> Reviewed-by: Stefan Wahren <[email-masked]>
> Reviewed-by: Andrew Lunn <[email-masked]>

Transient build failure here:

drivers/net/ethernet/freescale/mtipsw/mtipl2sw.c:1072:32: warning: variable ‘priv’ set but not used [-Wunused-but-set-variable]
 1072 |         struct mtip_ndev_priv *priv;
      |                                ^~~~

I sent out the AI code reviews while at it, without looking at them.
So please approach them with caution..