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authorLuiz Angelo Daros de Luca <luizluca@gmail.com>2022-05-22 22:32:34 -0300
committerDavid S. Miller <davem@davemloft.net>2022-05-23 12:27:53 +0100
commitfe7324b932222574a0721b80e72c6c5fe57960d1 (patch)
tree6e7a2ce62f34b721402696e9c0992fc566588059 /net/dsa
parent32c53420d2a0c2c3a691edb895d90d9d028ca3e0 (diff)
net: dsa: OF-ware slave_mii_bus
If found, register the DSA internally allocated slave_mii_bus with an OF "mdio" child object. It can save some drivers from creating their custom internal MDIO bus. Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/dsa2.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index d0a2452a1e24..cac48a741f27 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -13,6 +13,7 @@
#include <linux/slab.h>
#include <linux/rtnetlink.h>
#include <linux/of.h>
+#include <linux/of_mdio.h>
#include <linux/of_net.h>
#include <net/devlink.h>
#include <net/sch_generic.h>
@@ -852,6 +853,7 @@ disconnect:
static int dsa_switch_setup(struct dsa_switch *ds)
{
struct dsa_devlink_priv *dl_priv;
+ struct device_node *dn;
struct dsa_port *dp;
int err;
@@ -907,7 +909,10 @@ static int dsa_switch_setup(struct dsa_switch *ds)
dsa_slave_mii_bus_init(ds);
- err = mdiobus_register(ds->slave_mii_bus);
+ dn = of_get_child_by_name(ds->dev->of_node, "mdio");
+
+ err = of_mdiobus_register(ds->slave_mii_bus, dn);
+ of_node_put(dn);
if (err < 0)
goto free_slave_mii_bus;
}