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-rw-r--r--target/linux/mvebu/patches-3.10/0080-of-provide-a-binding-for-the-fixed-link-property.patch132
1 files changed, 132 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.10/0080-of-provide-a-binding-for-the-fixed-link-property.patch b/target/linux/mvebu/patches-3.10/0080-of-provide-a-binding-for-the-fixed-link-property.patch
new file mode 100644
index 0000000000..76105b39fc
--- /dev/null
+++ b/target/linux/mvebu/patches-3.10/0080-of-provide-a-binding-for-the-fixed-link-property.patch
@@ -0,0 +1,132 @@
+From 5378928ebac13756fc13d0b2de8dd45ace8026aa Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Mon, 15 Jul 2013 17:34:08 +0200
+Subject: [PATCH 080/203] of: provide a binding for the 'fixed-link' property
+
+Some Ethernet MACs have a "fixed link", and are not connected to a
+normal MDIO-managed PHY device. For those situations, a Device Tree
+binding allows to describe a "fixed link", as a "fixed-link" property
+of the Ethernet device Device Tree node.
+
+This patch adds:
+
+ * A documentation for the Device Tree property "fixed-link".
+
+ * A of_phy_register_fixed_link() OF helper, which provided an OF node
+ that contains a "fixed-link" property, registers the corresponding
+ fixed PHY.
+
+ * Removes the warning on the of_phy_connect_fixed_link() that says
+ new drivers should not use it, since Grant Likely indicated that
+ this "fixed-link" property is indeed the way to go.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+---
+ .../devicetree/bindings/net/fixed-link.txt | 26 ++++++++++++++++
+ drivers/of/of_mdio.c | 36 +++++++++++++++++++---
+ include/linux/of_mdio.h | 10 ++++++
+ 3 files changed, 68 insertions(+), 4 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/net/fixed-link.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/net/fixed-link.txt
+@@ -0,0 +1,26 @@
++Fixed link Device Tree binding
++------------------------------
++
++Some Ethernet MACs have a "fixed link", and are not connected to a
++normal MDIO-managed PHY device. For those situations, a Device Tree
++binding allows to describe a "fixed link".
++
++Such a fixed link situation is described within an Ethernet device
++Device Tree node using a 'fixed-link' property, composed of 5
++elements:
++
++ 1. A fake PHY ID, which must be unique accross all fixed-link PHYs in
++ the system.
++ 2. The duplex (1 for full-duplex, 0 for half-duplex)
++ 3. The speed (10, 100, 1000)
++ 4. The pause setting (1 for enabled, 0 for disabled)
++ 5. The asym pause setting (1 for enabled, 0 for disabled)
++
++Example:
++
++ethernet@0 {
++ ...
++ fixed-link = <1 1 1000 0 0>;
++ ...
++};
++
+--- a/drivers/of/of_mdio.c
++++ b/drivers/of/of_mdio.c
+@@ -14,6 +14,7 @@
+ #include <linux/netdevice.h>
+ #include <linux/err.h>
+ #include <linux/phy.h>
++#include <linux/phy_fixed.h>
+ #include <linux/of.h>
+ #include <linux/of_irq.h>
+ #include <linux/of_mdio.h>
+@@ -215,10 +216,6 @@ EXPORT_SYMBOL(of_phy_connect);
+ * @dev: pointer to net_device claiming the phy
+ * @hndlr: Link state callback for the network device
+ * @iface: PHY data interface type
+- *
+- * This function is a temporary stop-gap and will be removed soon. It is
+- * only to support the fs_enet, ucc_geth and gianfar Ethernet drivers. Do
+- * not call this function from new drivers.
+ */
+ struct phy_device *of_phy_connect_fixed_link(struct net_device *dev,
+ void (*hndlr)(struct net_device *),
+@@ -247,3 +244,34 @@ struct phy_device *of_phy_connect_fixed_
+ return IS_ERR(phy) ? NULL : phy;
+ }
+ EXPORT_SYMBOL(of_phy_connect_fixed_link);
++
++#if defined(CONFIG_FIXED_PHY)
++/**
++ * of_phy_register_fixed_link - Parse fixed-link property and register a dummy phy
++ * @np: pointer to the OF device node that contains the "fixed-link"
++ * property for which a dummy phy should be registered.
++ */
++#define FIXED_LINK_PROPERTIES_COUNT 5
++int of_phy_register_fixed_link(struct device_node *np)
++{
++ struct fixed_phy_status status = {};
++ u32 fixed_link_props[FIXED_LINK_PROPERTIES_COUNT];
++ int ret;
++
++ ret = of_property_read_u32_array(np, "fixed-link",
++ fixed_link_props,
++ FIXED_LINK_PROPERTIES_COUNT);
++ if (ret < 0)
++ return ret;
++
++ status.link = 1;
++ status.duplex = fixed_link_props[1];
++ status.speed = fixed_link_props[2];
++ status.pause = fixed_link_props[3];
++ status.asym_pause = fixed_link_props[4];
++
++ return fixed_phy_add(PHY_POLL, fixed_link_props[0],
++ &status);
++}
++EXPORT_SYMBOL(of_phy_register_fixed_link);
++#endif
+--- a/include/linux/of_mdio.h
++++ b/include/linux/of_mdio.h
+@@ -57,4 +57,14 @@ static inline struct mii_bus *of_mdio_fi
+ }
+ #endif /* CONFIG_OF */
+
++#if defined(CONFIG_OF) && defined(CONFIG_FIXED_PHY)
++extern int of_phy_register_fixed_link(struct device_node *np);
++#else
++static inline int of_phy_register_fixed_link(struct device_node *np)
++{
++ return -ENOSYS;
++}
++#endif
++
++
+ #endif /* __LINUX_OF_MDIO_H */