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SubjectRe: [PATCH 0/7] net: dsa: add QCA AR8xxx switch family support
On Thu, May 28, 2015 at 06:42:15PM -0700, Mathieu Olivari wrote:
> This patch set adds initial support for AR8xxx switches using the DSA
> subsystem. It currently supports QCA8337 switch, and can be extended to
> other hardware in the same family.
>
> This switch was already discussed in the following thread:
> https://www.marc.info/?t=142601417400004&r=1&w=2
>
> Below is a typical picture of a QCA8337 used in a standard home gateway
> configuration:
>
> +-----------+ +-----------+
> | | SGMII | |
> | eth0+-------+ +------ 1000baseT MDI ("WAN")
> | wan| | 7-port +------ 1000baseT MDI ("LAN1")
> | CPU | | ethernet +------ 1000baseT MDI ("LAN2")
> | | RGMII | switch +------ 1000baseT MDI ("LAN3")
> | eth1+-------+ w/5 PHYs +------ 1000baseT MDI ("LAN4")
> | lan| | |
> +-----------+ +-----------+
> | MDIO |
> \------------/
>
> The switch is connected to the CPU using 2 xMII interfaces. As DSA only
> supports one logical interface to the switch, we split the switch using
> device-tree information into 2 parts:
> *port 6 (one of the xMII switch port) will be dedicated to one
> particular Ethernet port. From a system perspective, it will be seen as
> a regular PHY.
> *port 0 (the other xMII port) will act as the switch master interface

FYI:

I have patches which allow DSA to use two cpu interfaces. Seems to
work on my DIR665 with a Marvell Switch.

I will post the patches as an RFC.

Andrew


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