[PATCH 2/4] netdev/phy/of: Handle IEEE802.3 clause 45 Ethernet PHYs in of_mdiobus_register()
From: David Daney <hidden>
Date: 2012-06-23 00:25:41
Also in:
linux-devicetree, linux-mips, lkml
Subsystem:
networking drivers, open firmware and flattened device tree, open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Saravana Kannan, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: David Daney <david.daney-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org> 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-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org> --- Documentation/devicetree/bindings/net/phy.txt | 12 +++++++++++- drivers/of/of_mdio.c | 14 +++++++++++--- 2 files changed, 22 insertions(+), 4 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 2574abd..0f08aaf 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c@@ -79,11 +79,19 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) mdio->irq[addr] = PHY_POLL; } + if (of_device_is_compatible(child, + "ethernet-phy-ieee802.3-c45")) + addr |= MII_ADDR_C45; + phy = get_phy_device(mdio, addr); 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, 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
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