Messages in this thread | | | Date | Mon, 22 Mar 2021 10:44:20 +0200 | From | Cristian Ciocaltea <> | Subject | Re: [PATCH v3 2/3] net: ethernet: actions: Add Actions Semi Owl Ethernet MAC driver |
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Hi Florian,
On Sun, Mar 21, 2021 at 08:30:07PM -0700, Florian Fainelli wrote: > 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@gmail.com> > > [snip] > > Do you know the story behind this Ethernet controller?
I just happened to get a board based on the S500 SoC, so I took this opportunity to help improving the mainline kernel support, but other than that I do not really know much about the hardware history.
> The various > receive/transmit descriptor definitions are 99% those defined in > drivers/net/ethernet/stmmicro/stmmac/descs.h for the normal descriptor.
That's an interesting observation. I could only assume the vendor did not want to reinvent the wheel here, but I cannot say if this is a common design scheme or is something specific to STMicroelectronics only.
> The register layout of the MAC looks completely different from a > dwmac100 or dwmac1000 however.
Most probably this is Actions specific..
> -- > Florian
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