Re: [PATCH net-next 2/9] net: dsa: mv88e6xxx: use 4-bit port for PVT data

[Andrew Lunn]

On Wed, Mar 29, 2017 at 04:30:13PM -0400, Vivien Didelot wrote:
> The Cross-chip Port Based VLAN Table (PVT) supports two indexing modes,
> one using 5-bit for device and 4-bit for port, the other using 4-bit for
> device and 5-bit for port, configured via the Global 2 Misc register.
> 
> Only 4 bits for the source port are needed when interconnecting 88E6xxx
> switch devices since they all support less than 16 physical ports. The
> full 5 bits are needed when interconnecting a device with 98DXxxx switch
> devices since they support more than 16 physical ports.
> 
> Add a mv88e6xxx_pvt_setup helper to set the 4-bit port PVT mode, which
> will be extended later to also initialize the PVT content.
> 
> Signed-off-by: Vivien Didelot <vivien.didelot@xxxxxxxxxxxxxxxxxxxx>

Reviewed-by: Andrew Lunn <andrew@xxxxxxx>

    Andrew