Le Thu, 28 Oct 2021 14:51:43 +0000,
Vladimir Oltean <vladimir.oltean@xxxxxxx> a écrit :
> On Thu, Oct 28, 2021 at 04:38:25PM +0200, Clément Léger wrote:
> > Le Thu, 28 Oct 2021 14:22:55 +0000,
> > Vladimir Oltean <vladimir.oltean@xxxxxxx> a écrit :
> >
> > > On Thu, Oct 28, 2021 at 04:15:22PM +0200, Clément Léger wrote:
> > > > Le Thu, 28 Oct 2021 14:06:12 +0000,
> > > > Vladimir Oltean <vladimir.oltean@xxxxxxx> a écrit :
> > > >
> > > > > On Thu, Oct 28, 2021 at 03:49:30PM +0200, Clément Léger
> > > > > wrote:
> > > > > > Add support to get mac from device-tree using
> > > > > > of_get_mac_address.
> > > > > >
> > > > > > Signed-off-by: Clément Léger <clement.leger@xxxxxxxxxxx>
> > > > > > ---
> > > > > > drivers/net/ethernet/mscc/ocelot_vsc7514.c | 5 ++++-
> > > > > > 1 file changed, 4 insertions(+), 1 deletion(-)
> > > > > >
> > > > > > diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> > > > > > b/drivers/net/ethernet/mscc/ocelot_vsc7514.c index
> > > > > > d51f799e4e86..c39118e5b3ee 100644 ---
> > > > > > a/drivers/net/ethernet/mscc/ocelot_vsc7514.c +++
> > > > > > b/drivers/net/ethernet/mscc/ocelot_vsc7514.c @@ -526,7
> > > > > > +526,10 @@ static int ocelot_chip_init(struct ocelot
> > > > > > *ocelot, const struct ocelot_ops *ops)
> > > > > > ocelot_pll5_init(ocelot);
> > > > > > - eth_random_addr(ocelot->base_mac);
> > > > > > + ret = of_get_mac_address(ocelot->dev->of_node,
> > > > > > ocelot->base_mac);
> > > > >
> > > > > Why not per port? This is pretty strange, I think.
> > > >
> > > > Hi Vladimir,
> > > >
> > > > Currently, all ports share the same base mac address (5 first
> > > > bytes). The final mac address per port is computed in
> > > > ocelot_probe_port by adding the port number as the last byte of
> > > > the mac_address provided.
> > > >
> > > > Clément
> > >
> > > Yes, I know that, but that's not my point.
> > > Every switch port should be pretty much compliant with
> > > ethernet-controller.yaml, if it could inherit that it would be
> > > even better. And since mac-address is an ethernet-controller.yaml
> > > property, it is pretty much non-obvious at all that you put the
> > > mac-address property directly under the switch, and manually add
> > > 0, 1, 2, 3 etc to it. My request was to parse the mac-address
> > > property of each port. Like this:
> > >
> > > base_mac = random;
> > >
> > > for_each_port() {
> > > err = of_get_mac_address(port_dn, &port_mac);
> > > if (err)
> > > port_mac = base_mac + port;
> > > }
> >
> > Ok indeed. So I will parse each port for a mac-address property. Do
> > you also want a fallback to use the switch base mac if not
> > specified in port or should I keep the use of a default random mac
> > as the base address anyway ?
>
> Isn't the pseudocode I posted above explicit enough? Sorry...
> Keep doing what the driver is doing right now, with an optional
> mac-address override per port.
> Why would we read the mac-address property of the switch? Which other
> switch driver does that? Are there device trees in circulation where
> this is being done?
Sorry, guess I'm a bit tired and missed out the base_mac = random...
Acked for the whole modification requested.
>
> > > > > > + if (ret)
> > > > > > + eth_random_addr(ocelot->base_mac);
> > > > > > +
> > > > > > ocelot->base_mac[5] &= 0xf0;
> > > > > >
> > > > > > return 0;
> > > > > > --
> > > > > > 2.33.0
> > > > >
> > >
>
