On Fri, Nov 05, 2021 at 08:51:01AM +0100, Ahmad Fatoum wrote:
> Hello Sascha,
>
> On 04.10.21 13:39, Ahmad Fatoum wrote:
> > Hello Sascha,
> >
> > On 04.10.21 13:26, Sascha Hauer wrote:
> >> On Tue, Aug 31, 2021 at 05:32:14PM +0200, Ahmad Fatoum wrote:
> >>> The STM32MP1 boards call their mdio subnode mdio0, which is now skipped
> >>> since ed8c7bdf8592 ("net: designware: eqos: set mdio bus device node").
> >>>
> >>> Fix networking for them by only falling back to the mdio node name when a
> >>> child node with the correct compatible could not be found.
> >>>
> >>> Fixes: ed8c7bdf8592 ("net: designware: eqos: set mdio bus device node")
> >>> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> >>> ---
> >>> drivers/net/designware_eqos.c | 6 +++++-
> >>> 1 file changed, 5 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/drivers/net/designware_eqos.c b/drivers/net/designware_eqos.c
> >>> index f83ec127143c..5eee844e289a 100644
> >>> --- a/drivers/net/designware_eqos.c
> >>> +++ b/drivers/net/designware_eqos.c
> >>> @@ -824,6 +824,7 @@ static void eqos_probe_dt(struct device_d *dev, struct eqos *eqos)
> >>>
> >>> int eqos_probe(struct device_d *dev, const struct eqos_ops *ops, void *priv)
> >>> {
> >>> + struct device_node *np = dev->device_node;
> >>> struct mii_bus *miibus;
> >>> struct resource *iores;
> >>> struct eqos *eqos;
> >>> @@ -862,7 +863,10 @@ int eqos_probe(struct device_d *dev, const struct eqos_ops *ops, void *priv)
> >>> miibus->read = eqos_mdio_read;
> >>> miibus->write = eqos_mdio_write;
> >>> miibus->priv = eqos;
> >>> - miibus->dev.device_node = of_get_child_by_name(dev->device_node, "mdio");
> >>> +
> >>> + miibus->dev.device_node = of_get_compatible_child(np, "snps,dwmac-mdio");
> >>> + if (!miibus->dev.device_node)
> >>> + miibus->dev.device_node = of_get_child_by_name(np, "mdio");
> >>
> >> Do we need this fallback? I think I introduced ed8c7bdf8592 for the
> >> rk3568, which also should work without the fallback.
> >
> > Linux driver uses "mdio" node name for snps,dwc-qos-ethernet-4.10 and looks
> > at compatible otherwise. That's why I chose to keep support for both.
>
> STM32MP1 support in master is broken. Can this be cherry picked?
Just did that.
Sascha
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