From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Daney Subject: [PATCH 2/5] netdev/phy/of: Handle IEEE802.3 clause 45 Ethernet PHYs in of_mdiobus_register() Date: Tue, 22 May 2012 10:59:49 -0700 Message-ID: <1337709592-23347-3-git-send-email-ddaney.cavm@gmail.com> References: <1337709592-23347-1-git-send-email-ddaney.cavm@gmail.com> Cc: linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, Andy Fleming , David Daney To: devicetree-discuss@lists.ozlabs.org, Grant Likely , Rob Herring , "David S. Miller" , netdev@vger.kernel.org Return-path: In-Reply-To: <1337709592-23347-1-git-send-email-ddaney.cavm@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: David Daney 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 --- 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 -- 1.7.2.3