On Wed, Jul 25, 2018 at 09:39:50AM +0100, Lad, Prabhakar wrote:
> Hi,
>
> We are trying to integrate a MAC to an external switch as following:
>
> +-------------------+ +------------------+
> | | RGMII | |
> | +------------+ KSZ9897 +------ 1000baseT MDI ("LAN1")
> | | PORT 6 | 7-port +------ 1000baseT MDI ("LAN2")
> | AM572x | | Ethernet +------ 1000baseT MDI ("LAN3")
> | CPSW |MIImgmt | switch +------ 1000baseT MDI ("LAN4")
> | +-------------+ +------
> 1000baseT MDI ("LAN5")
> | | SPI | |
> | | | |
> | | | +------
> 1000baseT MII ("LAN7")
> | | | |
> +------------------+ +------------------+
Please use a fixed size font, otherwise this is unreadable.
>
> I have done all the configuration required for the MAC controller and
> enabled the KSZ driver in the kernel, I can see the following:
> ~$ ip link show
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> mode DEFAULT group default qlen 1000
> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> 2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state
> DOWN mode DEFAULT group default qlen 1000
eth0 is you master device. NO-CARRIER is bad, since that means you
cannot send/receive from from the switch. Are you using a fixed phy on
the CPSW? What does your device tree look like?
Andrew
