From: David Daney <david.daney@xxxxxxxxxx>
Define two new "compatible" values for Ethernet
PHYs. "ethernet-phy-ieee802.3-c22" and "ethernet-phy-ieee802.3-c45"
are used to indicate a PHY uses the corresponding protocol.
If a PHY is "compatible" with "ethernet-phy-ieee802.3-c45", we
indicate this so that get_phy_device() can properly probe the device.
If get_phy_device() fails, it was probably due to failing the probe of
the PHY identifier registers. Since we have the device tree telling
us the PHY exists, go ahead and add it anyhow with a phy_id of zero.
There may be a driver match based on the "compatible" property.
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
---
Documentation/devicetree/bindings/net/phy.txt | 12 +++++++++++-
drivers/of/of_mdio.c | 16 ++++++++++++----
2 files changed, 23 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentation/devicetree/bindings/net/phy.txt
index bb8c742..7cd18fb 100644
--- a/Documentation/devicetree/bindings/net/phy.txt
+++ b/Documentation/devicetree/bindings/net/phy.txt
@@ -14,10 +14,20 @@ Required properties:
- linux,phandle : phandle for this node; likely referenced by an
ethernet controller node.
+Optional Properties:
+
+- compatible: Compatible list, may contain
+ "ethernet-phy-ieee802.3-c22" or "ethernet-phy-ieee802.3-c45" for
+ PHYs that implement IEEE802.3 clause 22 or IEEE802.3 clause 45
+ specifications. If neither of these are specified, the default is to
+ assume clause 22. The compatible list may also contain other
+ elements.
+
Example:
ethernet-phy@0 {
- linux,phandle = <2452000>
+ compatible = "ethernet-phy-ieee802.3-c22";
+ linux,phandle = <2452000>;
interrupt-parent = <40000>;
interrupts = <35 1>;
reg = <0>;
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 6c24cad..8e6c25f 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -57,6 +57,7 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
const __be32 *paddr;
u32 addr;
int len;
+ bool is_c45;
/* A PHY must have a reg property in the range [0-31] */
paddr = of_get_property(child, "reg", &len);
@@ -79,11 +80,18 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
mdio->irq[addr] = PHY_POLL;
}
- phy = get_phy_device(mdio, addr, false);
+ is_c45 = of_device_is_compatible(child,
+ "ethernet-phy-ieee802.3-c45");
+ phy = get_phy_device(mdio, addr, is_c45);
+
if (!phy || IS_ERR(phy)) {
- dev_err(&mdio->dev, "error probing PHY at address %i\n",
- addr);
- continue;
+ phy = phy_device_create(mdio, addr, 0, false, NULL);
+ if (!phy || IS_ERR(phy)) {
+ dev_err(&mdio->dev,
+ "error creating PHY at address %i\n",
+ addr);
+ continue;
+ }
}
/* Associate the OF node with the device structure so it
--
1.7.2.3
