Messages in this thread | | | Date | Fri, 29 May 2015 04:00:01 +0200 | From | Andrew Lunn <> | Subject | Re: [PATCH 0/7] net: dsa: add QCA AR8xxx switch family support |
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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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