On 3/12/21 2:41 AM, Rafał Miłecki wrote:
> From: Rafał Miłecki <[email protected]>
> 
> On some SoCs (e.g. BCM4908, BCM631[345]8) SF2 has an integrated
> crossbar. It allows connecting its selected external ports to internal
> ports. It's used by vendors to handle custom Ethernet setups.
> 
> BCM4908 has following 3x2 crossbar. On Asus GT-AC5300 rgmii is used for
> connecting external BCM53134S switch. GPHY4 is usually used for WAN
> port. More fancy devices use SerDes for 2.5 Gbps Ethernet.
> 
>               ┌──────────┐
> SerDes ─── 0 ─┤          │
>               │   3x2    ├─ 0 ─── switch port 7
>  GPHY4 ─── 1 ─┤          │
>               │ crossbar ├─ 1 ─── runner (accelerator)
>  rgmii ─── 2 ─┤          │
>               └──────────┘
> 
> Use setup data based on DT info to configure BCM4908's switch port 7.
> Right now only GPHY and rgmii variants are supported. Handling SerDes
> can be implemented later.
> 
> Signed-off-by: Rafał Miłecki <[email protected]>

Acked-by: Florian Fainelli <[email protected]>
-- 
Florian

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