Commit | Line | Data |
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8bc487d1 GL |
1 | /* |
2 | * OF helpers for the MDIO (Ethernet PHY) API | |
3 | * | |
4 | * Copyright (c) 2009 Secret Lab Technologies, Ltd. | |
5 | * | |
6 | * This file is released under the GPLv2 | |
7 | * | |
8 | * This file provides helper functions for extracting PHY device information | |
9 | * out of the OpenFirmware device tree and using it to populate an mii_bus. | |
10 | */ | |
11 | ||
24c30dbb AV |
12 | #include <linux/kernel.h> |
13 | #include <linux/device.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/err.h> | |
8bc487d1 | 16 | #include <linux/phy.h> |
3be2a49e | 17 | #include <linux/phy_fixed.h> |
8bc487d1 | 18 | #include <linux/of.h> |
e3873444 | 19 | #include <linux/of_irq.h> |
8bc487d1 | 20 | #include <linux/of_mdio.h> |
b7862412 | 21 | #include <linux/of_net.h> |
8bc487d1 GL |
22 | #include <linux/module.h> |
23 | ||
69226896 RQ |
24 | #define DEFAULT_GPIO_RESET_DELAY 10 /* in microseconds */ |
25 | ||
8bc487d1 GL |
26 | MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); |
27 | MODULE_LICENSE("GPL"); | |
28 | ||
3c6f5592 JG |
29 | /* Extract the clause 22 phy ID from the compatible string of the form |
30 | * ethernet-phy-idAAAA.BBBB */ | |
31 | static int of_get_phy_id(struct device_node *device, u32 *phy_id) | |
32 | { | |
33 | struct property *prop; | |
34 | const char *cp; | |
35 | unsigned int upper, lower; | |
36 | ||
37 | of_property_for_each_string(device, "compatible", prop, cp) { | |
38 | if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) == 2) { | |
39 | *phy_id = ((upper & 0xFFFF) << 16) | (lower & 0xFFFF); | |
40 | return 0; | |
41 | } | |
42 | } | |
43 | return -EINVAL; | |
44 | } | |
45 | ||
66bdede4 | 46 | static int of_mdiobus_register_phy(struct mii_bus *mdio, |
b520bd07 | 47 | struct device_node *child, u32 addr) |
2e79cb30 FF |
48 | { |
49 | struct phy_device *phy; | |
50 | bool is_c45; | |
f15c586d | 51 | int rc; |
3c6f5592 | 52 | u32 phy_id; |
2e79cb30 FF |
53 | |
54 | is_c45 = of_device_is_compatible(child, | |
55 | "ethernet-phy-ieee802.3-c45"); | |
56 | ||
3c6f5592 JG |
57 | if (!is_c45 && !of_get_phy_id(child, &phy_id)) |
58 | phy = phy_device_create(mdio, addr, phy_id, 0, NULL); | |
59 | else | |
60 | phy = get_phy_device(mdio, addr, is_c45); | |
af5840a9 | 61 | if (IS_ERR(phy)) |
66bdede4 | 62 | return PTR_ERR(phy); |
2e79cb30 | 63 | |
66bdede4 GU |
64 | rc = of_irq_get(child, 0); |
65 | if (rc == -EPROBE_DEFER) { | |
66 | phy_device_free(phy); | |
67 | return rc; | |
68 | } | |
f15c586d BD |
69 | if (rc > 0) { |
70 | phy->irq = rc; | |
1bc16add | 71 | mdio->irq[addr] = rc; |
f15c586d | 72 | } else { |
1bc16add | 73 | phy->irq = mdio->irq[addr]; |
2e79cb30 FF |
74 | } |
75 | ||
ab6016e0 FF |
76 | if (of_property_read_bool(child, "broken-turn-around")) |
77 | mdio->phy_ignore_ta_mask |= 1 << addr; | |
78 | ||
04f629f7 RL |
79 | of_property_read_u32(child, "reset-assert-us", |
80 | &phy->mdio.reset_assert_delay); | |
81 | of_property_read_u32(child, "reset-deassert-us", | |
82 | &phy->mdio.reset_deassert_delay); | |
3a30ae6e | 83 | |
2e79cb30 FF |
84 | /* Associate the OF node with the device structure so it |
85 | * can be looked up later */ | |
86 | of_node_get(child); | |
e5a03bfd | 87 | phy->mdio.dev.of_node = child; |
94a5ef1b | 88 | phy->mdio.dev.fwnode = of_fwnode_handle(child); |
2e79cb30 FF |
89 | |
90 | /* All data is now stored in the phy struct; | |
91 | * register it */ | |
92 | rc = phy_device_register(phy); | |
93 | if (rc) { | |
94 | phy_device_free(phy); | |
95 | of_node_put(child); | |
66bdede4 | 96 | return rc; |
2e79cb30 FF |
97 | } |
98 | ||
a613b26a RH |
99 | dev_dbg(&mdio->dev, "registered phy %pOFn at address %i\n", |
100 | child, addr); | |
66bdede4 | 101 | return 0; |
2e79cb30 FF |
102 | } |
103 | ||
66bdede4 GU |
104 | static int of_mdiobus_register_device(struct mii_bus *mdio, |
105 | struct device_node *child, u32 addr) | |
a9049e0c AL |
106 | { |
107 | struct mdio_device *mdiodev; | |
108 | int rc; | |
109 | ||
110 | mdiodev = mdio_device_create(mdio, addr); | |
a3478bae | 111 | if (IS_ERR(mdiodev)) |
66bdede4 | 112 | return PTR_ERR(mdiodev); |
a9049e0c AL |
113 | |
114 | /* Associate the OF node with the device structure so it | |
115 | * can be looked up later. | |
116 | */ | |
117 | of_node_get(child); | |
118 | mdiodev->dev.of_node = child; | |
94a5ef1b | 119 | mdiodev->dev.fwnode = of_fwnode_handle(child); |
a9049e0c AL |
120 | |
121 | /* All data is now stored in the mdiodev struct; register it. */ | |
122 | rc = mdio_device_register(mdiodev); | |
123 | if (rc) { | |
124 | mdio_device_free(mdiodev); | |
125 | of_node_put(child); | |
66bdede4 | 126 | return rc; |
a9049e0c AL |
127 | } |
128 | ||
a613b26a RH |
129 | dev_dbg(&mdio->dev, "registered mdio device %pOFn at address %i\n", |
130 | child, addr); | |
66bdede4 | 131 | return 0; |
a9049e0c AL |
132 | } |
133 | ||
ae461131 AL |
134 | /* The following is a list of PHY compatible strings which appear in |
135 | * some DTBs. The compatible string is never matched against a PHY | |
136 | * driver, so is pointless. We only expect devices which are not PHYs | |
137 | * to have a compatible string, so they can be matched to an MDIO | |
138 | * driver. Encourage users to upgrade their DT blobs to remove these. | |
139 | */ | |
140 | static const struct of_device_id whitelist_phys[] = { | |
141 | { .compatible = "brcm,40nm-ephy" }, | |
7e1392fb | 142 | { .compatible = "broadcom,bcm5241" }, |
ae461131 AL |
143 | { .compatible = "marvell,88E1111", }, |
144 | { .compatible = "marvell,88e1116", }, | |
145 | { .compatible = "marvell,88e1118", }, | |
f5a952c0 | 146 | { .compatible = "marvell,88e1145", }, |
ae461131 AL |
147 | { .compatible = "marvell,88e1149r", }, |
148 | { .compatible = "marvell,88e1310", }, | |
149 | { .compatible = "marvell,88E1510", }, | |
150 | { .compatible = "marvell,88E1514", }, | |
151 | { .compatible = "moxa,moxart-rtl8201cp", }, | |
152 | {} | |
153 | }; | |
154 | ||
801a8ef5 AL |
155 | /* |
156 | * Return true if the child node is for a phy. It must either: | |
157 | * o Compatible string of "ethernet-phy-idX.X" | |
158 | * o Compatible string of "ethernet-phy-ieee802.3-c45" | |
159 | * o Compatible string of "ethernet-phy-ieee802.3-c22" | |
ae461131 | 160 | * o In the white list above (and issue a warning) |
801a8ef5 AL |
161 | * o No compatibility string |
162 | * | |
163 | * A device which is not a phy is expected to have a compatible string | |
164 | * indicating what sort of device it is. | |
165 | */ | |
166 | static bool of_mdiobus_child_is_phy(struct device_node *child) | |
167 | { | |
168 | u32 phy_id; | |
169 | ||
170 | if (of_get_phy_id(child, &phy_id) != -EINVAL) | |
171 | return true; | |
172 | ||
173 | if (of_device_is_compatible(child, "ethernet-phy-ieee802.3-c45")) | |
174 | return true; | |
175 | ||
176 | if (of_device_is_compatible(child, "ethernet-phy-ieee802.3-c22")) | |
177 | return true; | |
178 | ||
ae461131 AL |
179 | if (of_match_node(whitelist_phys, child)) { |
180 | pr_warn(FW_WARN | |
0d638a07 RH |
181 | "%pOF: Whitelisted compatible string. Please remove\n", |
182 | child); | |
ae461131 AL |
183 | return true; |
184 | } | |
185 | ||
801a8ef5 AL |
186 | if (!of_find_property(child, "compatible", NULL)) |
187 | return true; | |
188 | ||
189 | return false; | |
190 | } | |
191 | ||
8bc487d1 GL |
192 | /** |
193 | * of_mdiobus_register - Register mii_bus and create PHYs from the device tree | |
194 | * @mdio: pointer to mii_bus structure | |
195 | * @np: pointer to device_node of MDIO bus. | |
196 | * | |
197 | * This function registers the mii_bus structure and registers a phy_device | |
198 | * for each child node of @np. | |
199 | */ | |
200 | int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) | |
201 | { | |
8bc487d1 | 202 | struct device_node *child; |
2e79cb30 | 203 | bool scanphys = false; |
e7f4dc35 | 204 | int addr, rc; |
8bc487d1 | 205 | |
6d07a68a FF |
206 | if (!np) |
207 | return mdiobus_register(mdio); | |
208 | ||
a77f4f70 FF |
209 | /* Do not continue if the node is disabled */ |
210 | if (!of_device_is_available(np)) | |
211 | return -ENODEV; | |
212 | ||
8bc487d1 GL |
213 | /* Mask out all PHYs from auto probing. Instead the PHYs listed in |
214 | * the device tree are populated after the bus has been registered */ | |
215 | mdio->phy_mask = ~0; | |
216 | ||
25106022 | 217 | mdio->dev.of_node = np; |
94a5ef1b | 218 | mdio->dev.fwnode = of_fwnode_handle(np); |
25106022 | 219 | |
69226896 RQ |
220 | /* Get bus level PHY reset GPIO details */ |
221 | mdio->reset_delay_us = DEFAULT_GPIO_RESET_DELAY; | |
222 | of_property_read_u32(np, "reset-delay-us", &mdio->reset_delay_us); | |
69226896 | 223 | |
8bc487d1 GL |
224 | /* Register the MDIO bus */ |
225 | rc = mdiobus_register(mdio); | |
226 | if (rc) | |
227 | return rc; | |
228 | ||
801a8ef5 | 229 | /* Loop over the child nodes and register a phy_device for each phy */ |
e207e761 | 230 | for_each_available_child_of_node(np, child) { |
8f838288 DM |
231 | addr = of_mdio_parse_addr(&mdio->dev, child); |
232 | if (addr < 0) { | |
779d835e | 233 | scanphys = true; |
19458860 DD |
234 | continue; |
235 | } | |
236 | ||
801a8ef5 | 237 | if (of_mdiobus_child_is_phy(child)) |
66bdede4 | 238 | rc = of_mdiobus_register_phy(mdio, child, addr); |
a9049e0c | 239 | else |
66bdede4 | 240 | rc = of_mdiobus_register_device(mdio, child, addr); |
95f566de MB |
241 | |
242 | if (rc == -ENODEV) | |
243 | dev_err(&mdio->dev, | |
244 | "MDIO device at address %d is missing.\n", | |
245 | addr); | |
246 | else if (rc) | |
66bdede4 | 247 | goto unregister; |
8bc487d1 GL |
248 | } |
249 | ||
779d835e SH |
250 | if (!scanphys) |
251 | return 0; | |
252 | ||
253 | /* auto scan for PHYs with empty reg property */ | |
254 | for_each_available_child_of_node(np, child) { | |
255 | /* Skip PHYs with reg property set */ | |
2fca6d28 | 256 | if (of_find_property(child, "reg", NULL)) |
779d835e SH |
257 | continue; |
258 | ||
779d835e SH |
259 | for (addr = 0; addr < PHY_MAX_ADDR; addr++) { |
260 | /* skip already registered PHYs */ | |
7f854420 | 261 | if (mdiobus_is_registered_device(mdio, addr)) |
779d835e SH |
262 | continue; |
263 | ||
264 | /* be noisy to encourage people to set reg property */ | |
a613b26a RH |
265 | dev_info(&mdio->dev, "scan phy %pOFn at address %i\n", |
266 | child, addr); | |
779d835e | 267 | |
66bdede4 GU |
268 | if (of_mdiobus_child_is_phy(child)) { |
269 | rc = of_mdiobus_register_phy(mdio, child, addr); | |
95f566de | 270 | if (rc && rc != -ENODEV) |
66bdede4 GU |
271 | goto unregister; |
272 | } | |
779d835e SH |
273 | } |
274 | } | |
275 | ||
8bc487d1 | 276 | return 0; |
66bdede4 GU |
277 | |
278 | unregister: | |
279 | mdiobus_unregister(mdio); | |
280 | return rc; | |
8bc487d1 GL |
281 | } |
282 | EXPORT_SYMBOL(of_mdiobus_register); | |
283 | ||
08a7963a JP |
284 | /* Helper function for of_phy_find_device */ |
285 | static int of_phy_match(struct device *dev, void *phy_np) | |
286 | { | |
61c7a080 | 287 | return dev->of_node == phy_np; |
08a7963a JP |
288 | } |
289 | ||
8bc487d1 GL |
290 | /** |
291 | * of_phy_find_device - Give a PHY node, find the phy_device | |
292 | * @phy_np: Pointer to the phy's device tree node | |
293 | * | |
f018ae7a RK |
294 | * If successful, returns a pointer to the phy_device with the embedded |
295 | * struct device refcount incremented by one, or NULL on failure. | |
8bc487d1 GL |
296 | */ |
297 | struct phy_device *of_phy_find_device(struct device_node *phy_np) | |
298 | { | |
299 | struct device *d; | |
6ed74236 AL |
300 | struct mdio_device *mdiodev; |
301 | ||
8bc487d1 GL |
302 | if (!phy_np) |
303 | return NULL; | |
304 | ||
08a7963a | 305 | d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match); |
6ed74236 AL |
306 | if (d) { |
307 | mdiodev = to_mdio_device(d); | |
308 | if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY) | |
309 | return to_phy_device(d); | |
3ae30f4c | 310 | put_device(d); |
6ed74236 AL |
311 | } |
312 | ||
313 | return NULL; | |
8bc487d1 GL |
314 | } |
315 | EXPORT_SYMBOL(of_phy_find_device); | |
316 | ||
317 | /** | |
318 | * of_phy_connect - Connect to the phy described in the device tree | |
319 | * @dev: pointer to net_device claiming the phy | |
320 | * @phy_np: Pointer to device tree node for the PHY | |
321 | * @hndlr: Link state callback for the network device | |
735c1e25 | 322 | * @flags: flags to pass to the PHY |
8bc487d1 GL |
323 | * @iface: PHY data interface type |
324 | * | |
f018ae7a RK |
325 | * If successful, returns a pointer to the phy_device with the embedded |
326 | * struct device refcount incremented by one, or NULL on failure. The | |
327 | * refcount must be dropped by calling phy_disconnect() or phy_detach(). | |
8bc487d1 GL |
328 | */ |
329 | struct phy_device *of_phy_connect(struct net_device *dev, | |
330 | struct device_node *phy_np, | |
331 | void (*hndlr)(struct net_device *), u32 flags, | |
332 | phy_interface_t iface) | |
333 | { | |
334 | struct phy_device *phy = of_phy_find_device(phy_np); | |
f018ae7a | 335 | int ret; |
8bc487d1 GL |
336 | |
337 | if (!phy) | |
338 | return NULL; | |
339 | ||
2f637151 FF |
340 | phy->dev_flags = flags; |
341 | ||
f018ae7a RK |
342 | ret = phy_connect_direct(dev, phy, hndlr, iface); |
343 | ||
344 | /* refcount is held by phy_connect_direct() on success */ | |
e5a03bfd | 345 | put_device(&phy->mdio.dev); |
f018ae7a RK |
346 | |
347 | return ret ? NULL : phy; | |
8bc487d1 GL |
348 | } |
349 | EXPORT_SYMBOL(of_phy_connect); | |
24c30dbb | 350 | |
b7862412 DL |
351 | /** |
352 | * of_phy_get_and_connect | |
353 | * - Get phy node and connect to the phy described in the device tree | |
354 | * @dev: pointer to net_device claiming the phy | |
355 | * @np: Pointer to device tree node for the net_device claiming the phy | |
356 | * @hndlr: Link state callback for the network device | |
357 | * | |
358 | * If successful, returns a pointer to the phy_device with the embedded | |
359 | * struct device refcount incremented by one, or NULL on failure. The | |
360 | * refcount must be dropped by calling phy_disconnect() or phy_detach(). | |
361 | */ | |
362 | struct phy_device *of_phy_get_and_connect(struct net_device *dev, | |
363 | struct device_node *np, | |
364 | void (*hndlr)(struct net_device *)) | |
365 | { | |
366 | phy_interface_t iface; | |
367 | struct device_node *phy_np; | |
368 | struct phy_device *phy; | |
6eb9c9da | 369 | int ret; |
b7862412 DL |
370 | |
371 | iface = of_get_phy_mode(np); | |
372 | if (iface < 0) | |
373 | return NULL; | |
6eb9c9da LW |
374 | if (of_phy_is_fixed_link(np)) { |
375 | ret = of_phy_register_fixed_link(np); | |
376 | if (ret < 0) { | |
377 | netdev_err(dev, "broken fixed-link specification\n"); | |
378 | return NULL; | |
379 | } | |
380 | phy_np = of_node_get(np); | |
381 | } else { | |
382 | phy_np = of_parse_phandle(np, "phy-handle", 0); | |
383 | if (!phy_np) | |
384 | return NULL; | |
385 | } | |
b7862412 DL |
386 | |
387 | phy = of_phy_connect(dev, phy_np, hndlr, 0, iface); | |
388 | ||
389 | of_node_put(phy_np); | |
390 | ||
391 | return phy; | |
392 | } | |
393 | EXPORT_SYMBOL(of_phy_get_and_connect); | |
394 | ||
7614aba6 AF |
395 | /** |
396 | * of_phy_attach - Attach to a PHY without starting the state machine | |
397 | * @dev: pointer to net_device claiming the phy | |
398 | * @phy_np: Node pointer for the PHY | |
399 | * @flags: flags to pass to the PHY | |
400 | * @iface: PHY data interface type | |
f018ae7a RK |
401 | * |
402 | * If successful, returns a pointer to the phy_device with the embedded | |
403 | * struct device refcount incremented by one, or NULL on failure. The | |
404 | * refcount must be dropped by calling phy_disconnect() or phy_detach(). | |
7614aba6 AF |
405 | */ |
406 | struct phy_device *of_phy_attach(struct net_device *dev, | |
407 | struct device_node *phy_np, u32 flags, | |
408 | phy_interface_t iface) | |
409 | { | |
410 | struct phy_device *phy = of_phy_find_device(phy_np); | |
f018ae7a | 411 | int ret; |
7614aba6 AF |
412 | |
413 | if (!phy) | |
414 | return NULL; | |
415 | ||
f018ae7a RK |
416 | ret = phy_attach_direct(dev, phy, flags, iface); |
417 | ||
418 | /* refcount is held by phy_attach_direct() on success */ | |
e5a03bfd | 419 | put_device(&phy->mdio.dev); |
f018ae7a RK |
420 | |
421 | return ret ? NULL : phy; | |
7614aba6 AF |
422 | } |
423 | EXPORT_SYMBOL(of_phy_attach); | |
3be2a49e | 424 | |
3be2a49e TP |
425 | /* |
426 | * of_phy_is_fixed_link() and of_phy_register_fixed_link() must | |
427 | * support two DT bindings: | |
428 | * - the old DT binding, where 'fixed-link' was a property with 5 | |
429 | * cells encoding various informations about the fixed PHY | |
430 | * - the new DT binding, where 'fixed-link' is a sub-node of the | |
431 | * Ethernet device. | |
432 | */ | |
433 | bool of_phy_is_fixed_link(struct device_node *np) | |
434 | { | |
435 | struct device_node *dn; | |
4cba5c21 SS |
436 | int len, err; |
437 | const char *managed; | |
3be2a49e TP |
438 | |
439 | /* New binding */ | |
440 | dn = of_get_child_by_name(np, "fixed-link"); | |
441 | if (dn) { | |
442 | of_node_put(dn); | |
443 | return true; | |
444 | } | |
445 | ||
4cba5c21 SS |
446 | err = of_property_read_string(np, "managed", &managed); |
447 | if (err == 0 && strcmp(managed, "auto") != 0) | |
448 | return true; | |
449 | ||
3be2a49e TP |
450 | /* Old binding */ |
451 | if (of_get_property(np, "fixed-link", &len) && | |
452 | len == (5 * sizeof(__be32))) | |
453 | return true; | |
454 | ||
455 | return false; | |
456 | } | |
457 | EXPORT_SYMBOL(of_phy_is_fixed_link); | |
458 | ||
459 | int of_phy_register_fixed_link(struct device_node *np) | |
460 | { | |
461 | struct fixed_phy_status status = {}; | |
462 | struct device_node *fixed_link_node; | |
d226a2b8 | 463 | u32 fixed_link_prop[5]; |
4cba5c21 SS |
464 | const char *managed; |
465 | ||
5a7a8346 SS |
466 | if (of_property_read_string(np, "managed", &managed) == 0 && |
467 | strcmp(managed, "in-band-status") == 0) { | |
468 | /* status is zeroed, namely its .link member */ | |
469 | goto register_phy; | |
4cba5c21 | 470 | } |
3be2a49e TP |
471 | |
472 | /* New binding */ | |
473 | fixed_link_node = of_get_child_by_name(np, "fixed-link"); | |
474 | if (fixed_link_node) { | |
475 | status.link = 1; | |
a72e1541 RR |
476 | status.duplex = of_property_read_bool(fixed_link_node, |
477 | "full-duplex"); | |
48c1699d JH |
478 | if (of_property_read_u32(fixed_link_node, "speed", |
479 | &status.speed)) { | |
480 | of_node_put(fixed_link_node); | |
3be2a49e | 481 | return -EINVAL; |
48c1699d | 482 | } |
a72e1541 RR |
483 | status.pause = of_property_read_bool(fixed_link_node, "pause"); |
484 | status.asym_pause = of_property_read_bool(fixed_link_node, | |
485 | "asym-pause"); | |
3be2a49e | 486 | of_node_put(fixed_link_node); |
a5597008 | 487 | |
5a7a8346 | 488 | goto register_phy; |
3be2a49e TP |
489 | } |
490 | ||
491 | /* Old binding */ | |
d226a2b8 SS |
492 | if (of_property_read_u32_array(np, "fixed-link", fixed_link_prop, |
493 | ARRAY_SIZE(fixed_link_prop)) == 0) { | |
3be2a49e | 494 | status.link = 1; |
d226a2b8 SS |
495 | status.duplex = fixed_link_prop[1]; |
496 | status.speed = fixed_link_prop[2]; | |
497 | status.pause = fixed_link_prop[3]; | |
498 | status.asym_pause = fixed_link_prop[4]; | |
5a7a8346 | 499 | goto register_phy; |
3be2a49e TP |
500 | } |
501 | ||
502 | return -ENODEV; | |
5a7a8346 SS |
503 | |
504 | register_phy: | |
5468e82f | 505 | return PTR_ERR_OR_ZERO(fixed_phy_register(PHY_POLL, &status, np)); |
3be2a49e TP |
506 | } |
507 | EXPORT_SYMBOL(of_phy_register_fixed_link); | |
3f65047c JH |
508 | |
509 | void of_phy_deregister_fixed_link(struct device_node *np) | |
510 | { | |
511 | struct phy_device *phydev; | |
512 | ||
513 | phydev = of_phy_find_device(np); | |
514 | if (!phydev) | |
515 | return; | |
516 | ||
517 | fixed_phy_unregister(phydev); | |
518 | ||
519 | put_device(&phydev->mdio.dev); /* of_phy_find_device() */ | |
520 | phy_device_free(phydev); /* fixed_phy_register() */ | |
521 | } | |
522 | EXPORT_SYMBOL(of_phy_deregister_fixed_link); |