linux-kernel - Re: [PATCH net-next 0/8] net: ethernet: ti: am65-cpsw: add multi port support in mac-only mode

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Date:   Thu, 1 Oct 2020 16:08:47 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Grygorii Strashko <grygorii.strashko@...com>
Cc:     "David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Sekhar Nori <nsekhar@...com>, <linux-kernel@...r.kernel.org>,
        <linux-omap@...r.kernel.org>,
        Murali Karicheri <m-karicheri2@...com>
Subject: Re: [PATCH net-next 0/8] net: ethernet: ti: am65-cpsw: add multi
 port support in mac-only mode

On Thu, 1 Oct 2020 13:52:50 +0300 Grygorii Strashko wrote:
> This series adds multi-port support in mac-only mode (multi MAC mode) to TI
> AM65x CPSW driver in preparation for enabling support for multi-port devices,
> like Main CPSW0 on K3 J721E SoC or future CPSW3g on K3 AM64x SoC.
> 
> The multi MAC mode is implemented by configuring every enabled port in "mac-only"
> mode (all ingress packets are sent only to the Host port and egress packets
> directed to target Ext. Port) and creating separate net_device for
> every enabled Ext. port.

Do I get it right that you select the mode based on platform? Can the
other mode still be supported on these platforms?

Is this a transition to normal DSA mode where ports always have netdevs?