Re: [PATCH 1/2] net: usb: cdc_ether: add NCSI passthrough support

[Andrew Lunn]

On Tue, Sep 08, 2026 at 08:45:36PM +0800, Potin Lai wrote:
> On Tue, Sep 8, 2026 at 2:17 AM Andrew Lunn <andrew@xxxxxxx> wrote:
> >
> > > +/* NCSI operates at 100 Mbps */
> > > +#define NCSI_SPEED_BPS               (100 * 1000000)
> >
> > Why 100Mbps? RGMII is often used, running at 1G.
> >
> 
> Since the original NC-SI specification was designed based on the
> RMII protocol, simply set the speed to 100 Mbps as the default
> for this virtual USB link.

How is this used? You could look at the USB link and return 1.5Mbps,
12Mbps, 480MBps, 5Gbps, 10Gbps, ...

	Andrew