On Wed, Nov 30, 2022 at 12:51:57PM +0100, Ahmad Fatoum wrote:
> The bcmgenet device tree binding describes the MDIO controller as a
> subnode of the Ethernet controller node. Linux handles this by having
> a driver for each of the MAC and MDIO controller, but in barebox we
> keep a single driver and largely ignore the subnode.
>
> Since Commit 8abc2059298d ("net: add support for MDIO devices"), this
> leads to following error message:
>
> ERROR: miibus0: /scb/ethernet@7d580000/mdio@e14 PHY address 3604 is too
> large
>
> Give the MII bus the correct device tree node to fix this. We already do
> it this way in the designware_eqos driver.
>
> This was tested on a Raspberry Pi 4b, where Link up and reading PHY ID
> of 600d 84a2 is sensible (matches PHY_ID_BCM54210E). DHCP though didn't
> work for me with or without this patch.
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> drivers/net/bcmgenet.c | 2 ++
> 1 file changed, 2 insertions(+)
Applied, thanks
Sascha
>
> diff --git a/drivers/net/bcmgenet.c b/drivers/net/bcmgenet.c
> index 2098e73b5cea..03389db8749b 100644
> --- a/drivers/net/bcmgenet.c
> +++ b/drivers/net/bcmgenet.c
> @@ -577,6 +577,8 @@ static int bcmgenet_probe(struct device_d *dev)
>
> priv->miibus.priv = priv;
> priv->miibus.parent = dev;
> + priv->miibus.dev.device_node
> + = of_get_compatible_child(dev->device_node, "brcm,genet-mdio-v5");
>
> ret = mdiobus_register(&priv->miibus);
> if (ret)
> --
> 2.30.2
>
>
>
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