diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.14/020-of_fixed_link_phy.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.14/020-of_fixed_link_phy.patch | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/target/linux/mvebu/patches-3.14/020-of_fixed_link_phy.patch b/target/linux/mvebu/patches-3.14/020-of_fixed_link_phy.patch deleted file mode 100644 index d1acc65700..0000000000 --- a/target/linux/mvebu/patches-3.14/020-of_fixed_link_phy.patch +++ /dev/null @@ -1,170 +0,0 @@ -From 3be2a49e5c08d268f8af0dd4fe89a24ea8cdc339 Mon Sep 17 00:00:00 2001 -From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Date: Fri, 16 May 2014 16:14:05 +0200 -Subject: of: provide a binding for fixed link PHYs - -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" using a special PHY node. - -This patch adds: - - * A documentation for the fixed PHY Device Tree binding. - - * An of_phy_is_fixed_link() function that an Ethernet driver can call - on its PHY phandle to find out whether it's a fixed link PHY or - not. It should typically be used to know if - of_phy_register_fixed_link() should be called. - - * An of_phy_register_fixed_link() function that instantiates the - fixed PHY into the PHY subsystem, so that when the driver calls - of_phy_connect(), the PHY device associated to the OF node will be - found. - -These two additional functions also support the old fixed-link Device -Tree binding used on PowerPC platforms, so that ultimately, the -network device drivers for those platforms could be converted to use -of_phy_is_fixed_link() and of_phy_register_fixed_link() instead of -of_phy_connect_fixed_link(), while keeping compatibility with their -respective Device Tree bindings. - -Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> -Tested-by: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: David S. Miller <davem@davemloft.net> - ---- /dev/null -+++ b/Documentation/devicetree/bindings/net/fixed-link.txt -@@ -0,0 +1,30 @@ -+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 by creating a 'fixed-link' -+sub-node of the Ethernet MAC device node, with the following -+properties: -+ -+* 'speed' (integer, mandatory), to indicate the link speed. Accepted -+ values are 10, 100 and 1000 -+* 'full-duplex' (boolean, optional), to indicate that full duplex is -+ used. When absent, half duplex is assumed. -+* 'pause' (boolean, optional), to indicate that pause should be -+ enabled. -+* 'asym-pause' (boolean, optional), to indicate that asym_pause should -+ be enabled. -+ -+Example: -+ -+ethernet@0 { -+ ... -+ fixed-link { -+ speed = <1000>; -+ full-duplex; -+ }; -+ ... -+}; ---- 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> -@@ -280,3 +281,69 @@ struct phy_device *of_phy_attach(struct - return phy_attach_direct(dev, phy, flags, iface) ? NULL : phy; - } - EXPORT_SYMBOL(of_phy_attach); -+ -+#if defined(CONFIG_FIXED_PHY) -+/* -+ * of_phy_is_fixed_link() and of_phy_register_fixed_link() must -+ * support two DT bindings: -+ * - the old DT binding, where 'fixed-link' was a property with 5 -+ * cells encoding various informations about the fixed PHY -+ * - the new DT binding, where 'fixed-link' is a sub-node of the -+ * Ethernet device. -+ */ -+bool of_phy_is_fixed_link(struct device_node *np) -+{ -+ struct device_node *dn; -+ int len; -+ -+ /* New binding */ -+ dn = of_get_child_by_name(np, "fixed-link"); -+ if (dn) { -+ of_node_put(dn); -+ return true; -+ } -+ -+ /* Old binding */ -+ if (of_get_property(np, "fixed-link", &len) && -+ len == (5 * sizeof(__be32))) -+ return true; -+ -+ return false; -+} -+EXPORT_SYMBOL(of_phy_is_fixed_link); -+ -+int of_phy_register_fixed_link(struct device_node *np) -+{ -+ struct fixed_phy_status status = {}; -+ struct device_node *fixed_link_node; -+ const __be32 *fixed_link_prop; -+ int len; -+ -+ /* New binding */ -+ fixed_link_node = of_get_child_by_name(np, "fixed-link"); -+ if (fixed_link_node) { -+ status.link = 1; -+ status.duplex = of_property_read_bool(np, "full-duplex"); -+ if (of_property_read_u32(fixed_link_node, "speed", &status.speed)) -+ return -EINVAL; -+ status.pause = of_property_read_bool(np, "pause"); -+ status.asym_pause = of_property_read_bool(np, "asym-pause"); -+ of_node_put(fixed_link_node); -+ return fixed_phy_register(PHY_POLL, &status, np); -+ } -+ -+ /* Old binding */ -+ fixed_link_prop = of_get_property(np, "fixed-link", &len); -+ if (fixed_link_prop && len == (5 * sizeof(__be32))) { -+ status.link = 1; -+ status.duplex = be32_to_cpu(fixed_link_prop[1]); -+ status.speed = be32_to_cpu(fixed_link_prop[2]); -+ status.pause = be32_to_cpu(fixed_link_prop[3]); -+ status.asym_pause = be32_to_cpu(fixed_link_prop[4]); -+ return fixed_phy_register(PHY_POLL, &status, np); -+ } -+ -+ return -ENODEV; -+} -+EXPORT_SYMBOL(of_phy_register_fixed_link); -+#endif ---- a/include/linux/of_mdio.h -+++ b/include/linux/of_mdio.h -@@ -67,4 +67,19 @@ 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); -+extern bool of_phy_is_fixed_link(struct device_node *np); -+#else -+static inline int of_phy_register_fixed_link(struct device_node *np) -+{ -+ return -ENOSYS; -+} -+static inline bool of_phy_is_fixed_link(struct device_node *np) -+{ -+ return false; -+} -+#endif -+ -+ - #endif /* __LINUX_OF_MDIO_H */ |