Re: [PATCH] can: flexcan: honor Device Tree alias for CAN netdev index

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Subject: Re: [PATCH] can: flexcan: honor Device Tree alias for CAN netdev
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On 30.07.2026 14:24:16, Michel Alex wrote:
> The FlexCAN driver currently relies on dynamic netdev numbering when
> registering CAN interfaces. This makes board-level name assignment
> difficult when users want stable or swapped interface names (for example,
> mapping physical CAN1 to can0 and CAN0 to can1).
>
> Read the DT alias ID with of_alias_get_id(np, "can") during probe and,
> when present, pre-set the netdev name to can%d before
> register_candev(). This lets the existing Linux alias mechanism drive
> the final interface name.
>
> With this change, systems can control naming from DT aliases, while
> keeping existing behavior unchanged when no CAN alias is provided.

NAK, please use udev/systemd/... to give networking devices stables names.

regards,
Marc

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Pengutronix e.K.                 | Marc Kleine-Budde          |
Embedded Linux                   | https://www.pengutronix.de |
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