mdio_bus: Allow for non PHY-devices on MDIO buses

Instead of just creating a simple PHY device for every child of MDIO
bus node, add code to check if any of them have "compatible" property
set, as well as code to create a proper platform device for such
cases.

This change is useful for when MDIO bus and some of Ethernet ports are
connected to a switch or some other MDIO device that doesn't behave
like a generic PHY and can't be probed via its PHY ID.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/of.h b/include/of.h
index 7fc4b7791f..184acb4741 100644
--- a/include/of.h
+++ b/include/of.h
@@ -321,6 +321,12 @@ static inline int of_set_root_node(struct device_node *node)
 	return -ENOSYS;
 }
 
+static inline struct device_d *of_platform_device_create(struct device_node *np,
+							 struct device_d *parent)
+{
+	return NULL;
+}
+
 static inline int of_n_addr_cells(struct device_node *np)
 {
 	return 0;