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drivers/of/of_net.c
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/* * OF helpers for network devices. * * This file is released under the GPLv2 * * Initially copied out of arch/powerpc/kernel/prom_parse.c */ #include <linux/etherdevice.h> #include <linux/kernel.h> #include <linux/of_net.h> |
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#include <linux/phy.h> |
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#include <linux/export.h> |
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/** * It maps 'enum phy_interface_t' found in include/linux/phy.h * into the device tree binding of 'phy-mode', so that Ethernet * device driver can get phy interface from device tree. */ static const char *phy_modes[] = { |
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[PHY_INTERFACE_MODE_NA] = "", |
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[PHY_INTERFACE_MODE_MII] = "mii", [PHY_INTERFACE_MODE_GMII] = "gmii", [PHY_INTERFACE_MODE_SGMII] = "sgmii", [PHY_INTERFACE_MODE_TBI] = "tbi", [PHY_INTERFACE_MODE_RMII] = "rmii", [PHY_INTERFACE_MODE_RGMII] = "rgmii", [PHY_INTERFACE_MODE_RGMII_ID] = "rgmii-id", [PHY_INTERFACE_MODE_RGMII_RXID] = "rgmii-rxid", [PHY_INTERFACE_MODE_RGMII_TXID] = "rgmii-txid", [PHY_INTERFACE_MODE_RTBI] = "rtbi", |
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[PHY_INTERFACE_MODE_SMII] = "smii", |
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}; /** * of_get_phy_mode - Get phy mode for given device_node * @np: Pointer to the given device_node * * The function gets phy interface string from property 'phy-mode', * and return its index in phy_modes table, or errno in error case. */ const int of_get_phy_mode(struct device_node *np) { const char *pm; int err, i; err = of_property_read_string(np, "phy-mode", &pm); if (err < 0) return err; for (i = 0; i < ARRAY_SIZE(phy_modes); i++) if (!strcasecmp(pm, phy_modes[i])) return i; return -ENODEV; } EXPORT_SYMBOL_GPL(of_get_phy_mode); |
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/** * Search the device tree for the best MAC address to use. 'mac-address' is * checked first, because that is supposed to contain to "most recent" MAC * address. If that isn't set, then 'local-mac-address' is checked next, * because that is the default address. If that isn't set, then the obsolete * 'address' is checked, just in case we're using an old device tree. * * Note that the 'address' property is supposed to contain a virtual address of * the register set, but some DTS files have redefined that property to be the * MAC address. * * All-zero MAC addresses are rejected, because those could be properties that * exist in the device tree, but were not set by U-Boot. For example, the * DTS could define 'mac-address' and 'local-mac-address', with zero MAC * addresses. Some older U-Boots only initialized 'local-mac-address'. In * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists * but is all zeros. */ const void *of_get_mac_address(struct device_node *np) { struct property *pp; pp = of_find_property(np, "mac-address", NULL); if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value)) return pp->value; pp = of_find_property(np, "local-mac-address", NULL); if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value)) return pp->value; pp = of_find_property(np, "address", NULL); if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value)) return pp->value; return NULL; } EXPORT_SYMBOL(of_get_mac_address); |