linux-kernel - Re: [PATCH v3 2/3] net: ethernet: actions: Add Actions Semi Owl Ethernet MAC driver

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Date:   Sun, 21 Mar 2021 20:30:07 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Cristian Ciocaltea <cristian.ciocaltea@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>, Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andreas Färber <afaerber@...e.de>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-actions@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/3] net: ethernet: actions: Add Actions Semi Owl
 Ethernet MAC driver

Hi Christian,

On 3/21/2021 4:29 PM, Cristian Ciocaltea wrote:
> Add new driver for the Ethernet MAC used on the Actions Semi Owl
> family of SoCs.
> 
> Currently this has been tested only on the Actions Semi S500 SoC
> variant.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...il.com>

[snip]

Do you know the story behind this Ethernet controller? The various
receive/transmit descriptor definitions are 99% those defined in
drivers/net/ethernet/stmmicro/stmmac/descs.h for the normal descriptor.

The register layout of the MAC looks completely different from a
dwmac100 or dwmac1000 however.
-- 
Florian