On Tue, Oct 06, 2020 at 12:13:04PM +0200, Kurt Kanzenbach wrote:
> >> >> +static const struct hellcreek_platform_data de1soc_r1_pdata = {
> >> >> + .num_ports = 4,
> >> >> + .is_100_mbits = 1,
> >> >> + .qbv_support = 1,
> >> >> + .qbv_on_cpu_port = 1,
> >> >
> >> > Why does this matter?
> >>
> >> Because Qbv on the CPU port is a feature and not all switch variants
> >> have that. It will matter as soon as TAPRIO is implemented.
> >
> > How do you plan to install a tc-taprio qdisc on the CPU port?
>
> That's an issue to be sorted out.
Do you have a compelling use case for tc-taprio on the CPU port though?
I've been waiting for someone to put one on the table.
If it's just "nice to have", I don't think that DSA will change just to
accomodate that. The fact that the CPU port doesn't have a net device is
already pretty much the established behavior.
