blob: 262281bd68fa3c4d39e13f52eeafea1948d1bd22 [file] [log] [blame]
Grant Likely8bc487d2009-04-25 12:52:56 +00001/*
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
Anton Vorontsov24c30db2009-07-16 21:31:31 +000012#include <linux/kernel.h>
13#include <linux/device.h>
14#include <linux/netdevice.h>
15#include <linux/err.h>
Grant Likely8bc487d2009-04-25 12:52:56 +000016#include <linux/phy.h>
Thomas Petazzoni3be2a492014-05-16 16:14:05 +020017#include <linux/phy_fixed.h>
Grant Likely8bc487d2009-04-25 12:52:56 +000018#include <linux/of.h>
Andrew Lunna5597002015-08-31 15:56:53 +020019#include <linux/of_gpio.h>
Grant Likelye3873442010-06-18 11:09:59 -060020#include <linux/of_irq.h>
Grant Likely8bc487d2009-04-25 12:52:56 +000021#include <linux/of_mdio.h>
Dongpo Lib7862412016-07-15 16:26:34 +080022#include <linux/of_net.h>
Grant Likely8bc487d2009-04-25 12:52:56 +000023#include <linux/module.h>
24
25MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
26MODULE_LICENSE("GPL");
27
Jason Gunthorpe3c6f5592014-03-19 16:15:24 -060028/* Extract the clause 22 phy ID from the compatible string of the form
29 * ethernet-phy-idAAAA.BBBB */
30static int of_get_phy_id(struct device_node *device, u32 *phy_id)
31{
32 struct property *prop;
33 const char *cp;
34 unsigned int upper, lower;
35
36 of_property_for_each_string(device, "compatible", prop, cp) {
37 if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) == 2) {
38 *phy_id = ((upper & 0xFFFF) << 16) | (lower & 0xFFFF);
39 return 0;
40 }
41 }
42 return -EINVAL;
43}
44
Sergei Shtylyovb520bd02016-04-17 01:05:19 +030045static void of_mdiobus_register_phy(struct mii_bus *mdio,
46 struct device_node *child, u32 addr)
Florian Fainelli2e79cb32013-12-05 14:52:10 -080047{
48 struct phy_device *phy;
49 bool is_c45;
Ben Dooksf15c5862014-02-18 12:16:58 +000050 int rc;
Jason Gunthorpe3c6f5592014-03-19 16:15:24 -060051 u32 phy_id;
Florian Fainelli2e79cb32013-12-05 14:52:10 -080052
53 is_c45 = of_device_is_compatible(child,
54 "ethernet-phy-ieee802.3-c45");
55
Jason Gunthorpe3c6f5592014-03-19 16:15:24 -060056 if (!is_c45 && !of_get_phy_id(child, &phy_id))
57 phy = phy_device_create(mdio, addr, phy_id, 0, NULL);
58 else
59 phy = get_phy_device(mdio, addr, is_c45);
Sergei Shtylyovaf5840a2016-04-24 20:31:42 +030060 if (IS_ERR(phy))
Sergei Shtylyovb520bd02016-04-17 01:05:19 +030061 return;
Florian Fainelli2e79cb32013-12-05 14:52:10 -080062
Ben Dooksf15c5862014-02-18 12:16:58 +000063 rc = irq_of_parse_and_map(child, 0);
64 if (rc > 0) {
65 phy->irq = rc;
Dan Carpenter1bc16ad2016-01-12 12:35:34 +030066 mdio->irq[addr] = rc;
Ben Dooksf15c5862014-02-18 12:16:58 +000067 } else {
Dan Carpenter1bc16ad2016-01-12 12:35:34 +030068 phy->irq = mdio->irq[addr];
Florian Fainelli2e79cb32013-12-05 14:52:10 -080069 }
70
Florian Fainelliab6016e2015-05-12 10:33:25 -070071 if (of_property_read_bool(child, "broken-turn-around"))
72 mdio->phy_ignore_ta_mask |= 1 << addr;
73
Florian Fainelli2e79cb32013-12-05 14:52:10 -080074 /* Associate the OF node with the device structure so it
75 * can be looked up later */
76 of_node_get(child);
Andrew Lunne5a03bf2016-01-06 20:11:16 +010077 phy->mdio.dev.of_node = child;
Florian Fainelli2e79cb32013-12-05 14:52:10 -080078
79 /* All data is now stored in the phy struct;
80 * register it */
81 rc = phy_device_register(phy);
82 if (rc) {
83 phy_device_free(phy);
84 of_node_put(child);
Sergei Shtylyovb520bd02016-04-17 01:05:19 +030085 return;
Florian Fainelli2e79cb32013-12-05 14:52:10 -080086 }
87
88 dev_dbg(&mdio->dev, "registered phy %s at address %i\n",
Florian Fainelli8fdade42013-12-05 14:52:14 -080089 child->name, addr);
Florian Fainelli2e79cb32013-12-05 14:52:10 -080090}
91
Sergei Shtylyovb520bd02016-04-17 01:05:19 +030092static void of_mdiobus_register_device(struct mii_bus *mdio,
93 struct device_node *child, u32 addr)
Andrew Lunna9049e02016-01-06 20:11:26 +010094{
95 struct mdio_device *mdiodev;
96 int rc;
97
98 mdiodev = mdio_device_create(mdio, addr);
Sergei Shtylyova3478ba2016-03-13 00:33:13 +030099 if (IS_ERR(mdiodev))
Sergei Shtylyovb520bd02016-04-17 01:05:19 +0300100 return;
Andrew Lunna9049e02016-01-06 20:11:26 +0100101
102 /* Associate the OF node with the device structure so it
103 * can be looked up later.
104 */
105 of_node_get(child);
106 mdiodev->dev.of_node = child;
107
108 /* All data is now stored in the mdiodev struct; register it. */
109 rc = mdio_device_register(mdiodev);
110 if (rc) {
111 mdio_device_free(mdiodev);
112 of_node_put(child);
Sergei Shtylyovb520bd02016-04-17 01:05:19 +0300113 return;
Andrew Lunna9049e02016-01-06 20:11:26 +0100114 }
115
116 dev_dbg(&mdio->dev, "registered mdio device %s at address %i\n",
117 child->name, addr);
Andrew Lunna9049e02016-01-06 20:11:26 +0100118}
119
Florian Fainelli33d67372015-03-10 16:57:11 -0700120int of_mdio_parse_addr(struct device *dev, const struct device_node *np)
Daniel Mack8f838282014-05-24 09:34:25 +0200121{
122 u32 addr;
123 int ret;
124
125 ret = of_property_read_u32(np, "reg", &addr);
126 if (ret < 0) {
127 dev_err(dev, "%s has invalid PHY address\n", np->full_name);
128 return ret;
129 }
130
131 /* A PHY must have a reg property in the range [0-31] */
132 if (addr >= PHY_MAX_ADDR) {
133 dev_err(dev, "%s PHY address %i is too large\n",
134 np->full_name, addr);
135 return -EINVAL;
136 }
137
138 return addr;
139}
Florian Fainelli33d67372015-03-10 16:57:11 -0700140EXPORT_SYMBOL(of_mdio_parse_addr);
Daniel Mack8f838282014-05-24 09:34:25 +0200141
Andrew Lunnae461132016-01-28 02:30:29 +0100142/* The following is a list of PHY compatible strings which appear in
143 * some DTBs. The compatible string is never matched against a PHY
144 * driver, so is pointless. We only expect devices which are not PHYs
145 * to have a compatible string, so they can be matched to an MDIO
146 * driver. Encourage users to upgrade their DT blobs to remove these.
147 */
148static const struct of_device_id whitelist_phys[] = {
149 { .compatible = "brcm,40nm-ephy" },
150 { .compatible = "marvell,88E1111", },
151 { .compatible = "marvell,88e1116", },
152 { .compatible = "marvell,88e1118", },
Aaro Koskinenf5a952c02016-02-03 21:35:29 +0200153 { .compatible = "marvell,88e1145", },
Andrew Lunnae461132016-01-28 02:30:29 +0100154 { .compatible = "marvell,88e1149r", },
155 { .compatible = "marvell,88e1310", },
156 { .compatible = "marvell,88E1510", },
157 { .compatible = "marvell,88E1514", },
158 { .compatible = "moxa,moxart-rtl8201cp", },
159 {}
160};
161
Andrew Lunn801a8ef2016-01-06 20:11:17 +0100162/*
163 * Return true if the child node is for a phy. It must either:
164 * o Compatible string of "ethernet-phy-idX.X"
165 * o Compatible string of "ethernet-phy-ieee802.3-c45"
166 * o Compatible string of "ethernet-phy-ieee802.3-c22"
Andrew Lunnae461132016-01-28 02:30:29 +0100167 * o In the white list above (and issue a warning)
Andrew Lunn801a8ef2016-01-06 20:11:17 +0100168 * o No compatibility string
169 *
170 * A device which is not a phy is expected to have a compatible string
171 * indicating what sort of device it is.
172 */
173static bool of_mdiobus_child_is_phy(struct device_node *child)
174{
175 u32 phy_id;
176
177 if (of_get_phy_id(child, &phy_id) != -EINVAL)
178 return true;
179
180 if (of_device_is_compatible(child, "ethernet-phy-ieee802.3-c45"))
181 return true;
182
183 if (of_device_is_compatible(child, "ethernet-phy-ieee802.3-c22"))
184 return true;
185
Andrew Lunnae461132016-01-28 02:30:29 +0100186 if (of_match_node(whitelist_phys, child)) {
187 pr_warn(FW_WARN
188 "%s: Whitelisted compatible string. Please remove\n",
189 child->full_name);
190 return true;
191 }
192
Andrew Lunn801a8ef2016-01-06 20:11:17 +0100193 if (!of_find_property(child, "compatible", NULL))
194 return true;
195
196 return false;
197}
198
Grant Likely8bc487d2009-04-25 12:52:56 +0000199/**
200 * of_mdiobus_register - Register mii_bus and create PHYs from the device tree
201 * @mdio: pointer to mii_bus structure
202 * @np: pointer to device_node of MDIO bus.
203 *
204 * This function registers the mii_bus structure and registers a phy_device
205 * for each child node of @np.
206 */
207int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
208{
Grant Likely8bc487d2009-04-25 12:52:56 +0000209 struct device_node *child;
Florian Fainelli2e79cb32013-12-05 14:52:10 -0800210 bool scanphys = false;
Andrew Lunne7f4dc32016-01-06 20:11:15 +0100211 int addr, rc;
Grant Likely8bc487d2009-04-25 12:52:56 +0000212
Florian Fainellia77f4f72016-04-28 16:24:12 -0700213 /* Do not continue if the node is disabled */
214 if (!of_device_is_available(np))
215 return -ENODEV;
216
Grant Likely8bc487d2009-04-25 12:52:56 +0000217 /* Mask out all PHYs from auto probing. Instead the PHYs listed in
218 * the device tree are populated after the bus has been registered */
219 mdio->phy_mask = ~0;
220
David Daney25106022012-05-02 15:16:37 +0000221 mdio->dev.of_node = np;
222
Grant Likely8bc487d2009-04-25 12:52:56 +0000223 /* Register the MDIO bus */
224 rc = mdiobus_register(mdio);
225 if (rc)
226 return rc;
227
Andrew Lunn801a8ef2016-01-06 20:11:17 +0100228 /* Loop over the child nodes and register a phy_device for each phy */
Alexander Sverdline207e762012-11-29 08:45:20 +0100229 for_each_available_child_of_node(np, child) {
Daniel Mack8f838282014-05-24 09:34:25 +0200230 addr = of_mdio_parse_addr(&mdio->dev, child);
231 if (addr < 0) {
Sebastian Hesselbarth779d8352013-04-07 01:09:48 +0000232 scanphys = true;
David Daney19458862010-10-27 18:03:47 -0700233 continue;
Grant Likely8bc487d2009-04-25 12:52:56 +0000234 }
235
Andrew Lunn801a8ef2016-01-06 20:11:17 +0100236 if (of_mdiobus_child_is_phy(child))
237 of_mdiobus_register_phy(mdio, child, addr);
Andrew Lunna9049e02016-01-06 20:11:26 +0100238 else
239 of_mdiobus_register_device(mdio, child, addr);
Grant Likely8bc487d2009-04-25 12:52:56 +0000240 }
241
Sebastian Hesselbarth779d8352013-04-07 01:09:48 +0000242 if (!scanphys)
243 return 0;
244
245 /* auto scan for PHYs with empty reg property */
246 for_each_available_child_of_node(np, child) {
247 /* Skip PHYs with reg property set */
Sergei Shtylyov2fca6d22016-02-28 21:56:34 +0300248 if (of_find_property(child, "reg", NULL))
Sebastian Hesselbarth779d8352013-04-07 01:09:48 +0000249 continue;
250
Sebastian Hesselbarth779d8352013-04-07 01:09:48 +0000251 for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
252 /* skip already registered PHYs */
Andrew Lunn7f854422016-01-06 20:11:18 +0100253 if (mdiobus_is_registered_device(mdio, addr))
Sebastian Hesselbarth779d8352013-04-07 01:09:48 +0000254 continue;
255
256 /* be noisy to encourage people to set reg property */
257 dev_info(&mdio->dev, "scan phy %s at address %i\n",
258 child->name, addr);
259
Andrew Lunn801a8ef2016-01-06 20:11:17 +0100260 if (of_mdiobus_child_is_phy(child))
261 of_mdiobus_register_phy(mdio, child, addr);
Sebastian Hesselbarth779d8352013-04-07 01:09:48 +0000262 }
263 }
264
Grant Likely8bc487d2009-04-25 12:52:56 +0000265 return 0;
266}
267EXPORT_SYMBOL(of_mdiobus_register);
268
Jérôme Pouiller08a79632009-10-15 09:58:27 -0600269/* Helper function for of_phy_find_device */
270static int of_phy_match(struct device *dev, void *phy_np)
271{
Grant Likely61c7a082010-04-13 16:12:29 -0700272 return dev->of_node == phy_np;
Jérôme Pouiller08a79632009-10-15 09:58:27 -0600273}
274
Grant Likely8bc487d2009-04-25 12:52:56 +0000275/**
276 * of_phy_find_device - Give a PHY node, find the phy_device
277 * @phy_np: Pointer to the phy's device tree node
278 *
Russell Kingf018ae72015-09-24 20:36:13 +0100279 * If successful, returns a pointer to the phy_device with the embedded
280 * struct device refcount incremented by one, or NULL on failure.
Grant Likely8bc487d2009-04-25 12:52:56 +0000281 */
282struct phy_device *of_phy_find_device(struct device_node *phy_np)
283{
284 struct device *d;
Andrew Lunn6ed74232016-01-26 15:12:30 +0100285 struct mdio_device *mdiodev;
286
Grant Likely8bc487d2009-04-25 12:52:56 +0000287 if (!phy_np)
288 return NULL;
289
Jérôme Pouiller08a79632009-10-15 09:58:27 -0600290 d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match);
Andrew Lunn6ed74232016-01-26 15:12:30 +0100291 if (d) {
292 mdiodev = to_mdio_device(d);
293 if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY)
294 return to_phy_device(d);
Johan Hovold3ae30f42016-11-16 15:20:37 +0100295 put_device(d);
Andrew Lunn6ed74232016-01-26 15:12:30 +0100296 }
297
298 return NULL;
Grant Likely8bc487d2009-04-25 12:52:56 +0000299}
300EXPORT_SYMBOL(of_phy_find_device);
301
302/**
303 * of_phy_connect - Connect to the phy described in the device tree
304 * @dev: pointer to net_device claiming the phy
305 * @phy_np: Pointer to device tree node for the PHY
306 * @hndlr: Link state callback for the network device
Sergei Shtylyov735c1e22016-02-28 22:50:59 +0300307 * @flags: flags to pass to the PHY
Grant Likely8bc487d2009-04-25 12:52:56 +0000308 * @iface: PHY data interface type
309 *
Russell Kingf018ae72015-09-24 20:36:13 +0100310 * If successful, returns a pointer to the phy_device with the embedded
311 * struct device refcount incremented by one, or NULL on failure. The
312 * refcount must be dropped by calling phy_disconnect() or phy_detach().
Grant Likely8bc487d2009-04-25 12:52:56 +0000313 */
314struct phy_device *of_phy_connect(struct net_device *dev,
315 struct device_node *phy_np,
316 void (*hndlr)(struct net_device *), u32 flags,
317 phy_interface_t iface)
318{
319 struct phy_device *phy = of_phy_find_device(phy_np);
Russell Kingf018ae72015-09-24 20:36:13 +0100320 int ret;
Grant Likely8bc487d2009-04-25 12:52:56 +0000321
322 if (!phy)
323 return NULL;
324
Florian Fainelli2f637152014-09-19 13:07:49 -0700325 phy->dev_flags = flags;
326
Russell Kingf018ae72015-09-24 20:36:13 +0100327 ret = phy_connect_direct(dev, phy, hndlr, iface);
328
329 /* refcount is held by phy_connect_direct() on success */
Andrew Lunne5a03bf2016-01-06 20:11:16 +0100330 put_device(&phy->mdio.dev);
Russell Kingf018ae72015-09-24 20:36:13 +0100331
332 return ret ? NULL : phy;
Grant Likely8bc487d2009-04-25 12:52:56 +0000333}
334EXPORT_SYMBOL(of_phy_connect);
Anton Vorontsov24c30db2009-07-16 21:31:31 +0000335
336/**
Dongpo Lib7862412016-07-15 16:26:34 +0800337 * of_phy_get_and_connect
338 * - Get phy node and connect to the phy described in the device tree
339 * @dev: pointer to net_device claiming the phy
340 * @np: Pointer to device tree node for the net_device claiming the phy
341 * @hndlr: Link state callback for the network device
342 *
343 * If successful, returns a pointer to the phy_device with the embedded
344 * struct device refcount incremented by one, or NULL on failure. The
345 * refcount must be dropped by calling phy_disconnect() or phy_detach().
346 */
347struct phy_device *of_phy_get_and_connect(struct net_device *dev,
348 struct device_node *np,
349 void (*hndlr)(struct net_device *))
350{
351 phy_interface_t iface;
352 struct device_node *phy_np;
353 struct phy_device *phy;
354
355 iface = of_get_phy_mode(np);
356 if (iface < 0)
357 return NULL;
358
359 phy_np = of_parse_phandle(np, "phy-handle", 0);
360 if (!phy_np)
361 return NULL;
362
363 phy = of_phy_connect(dev, phy_np, hndlr, 0, iface);
364
365 of_node_put(phy_np);
366
367 return phy;
368}
369EXPORT_SYMBOL(of_phy_get_and_connect);
370
371/**
Andy Fleming7614aba2014-01-10 14:28:11 +0800372 * of_phy_attach - Attach to a PHY without starting the state machine
373 * @dev: pointer to net_device claiming the phy
374 * @phy_np: Node pointer for the PHY
375 * @flags: flags to pass to the PHY
376 * @iface: PHY data interface type
Russell Kingf018ae72015-09-24 20:36:13 +0100377 *
378 * If successful, returns a pointer to the phy_device with the embedded
379 * struct device refcount incremented by one, or NULL on failure. The
380 * refcount must be dropped by calling phy_disconnect() or phy_detach().
Andy Fleming7614aba2014-01-10 14:28:11 +0800381 */
382struct phy_device *of_phy_attach(struct net_device *dev,
383 struct device_node *phy_np, u32 flags,
384 phy_interface_t iface)
385{
386 struct phy_device *phy = of_phy_find_device(phy_np);
Russell Kingf018ae72015-09-24 20:36:13 +0100387 int ret;
Andy Fleming7614aba2014-01-10 14:28:11 +0800388
389 if (!phy)
390 return NULL;
391
Russell Kingf018ae72015-09-24 20:36:13 +0100392 ret = phy_attach_direct(dev, phy, flags, iface);
393
394 /* refcount is held by phy_attach_direct() on success */
Andrew Lunne5a03bf2016-01-06 20:11:16 +0100395 put_device(&phy->mdio.dev);
Russell Kingf018ae72015-09-24 20:36:13 +0100396
397 return ret ? NULL : phy;
Andy Fleming7614aba2014-01-10 14:28:11 +0800398}
399EXPORT_SYMBOL(of_phy_attach);
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200400
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200401/*
402 * of_phy_is_fixed_link() and of_phy_register_fixed_link() must
403 * support two DT bindings:
404 * - the old DT binding, where 'fixed-link' was a property with 5
405 * cells encoding various informations about the fixed PHY
406 * - the new DT binding, where 'fixed-link' is a sub-node of the
407 * Ethernet device.
408 */
409bool of_phy_is_fixed_link(struct device_node *np)
410{
411 struct device_node *dn;
Stas Sergeev4cba5c22015-07-20 17:49:57 -0700412 int len, err;
413 const char *managed;
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200414
415 /* New binding */
416 dn = of_get_child_by_name(np, "fixed-link");
417 if (dn) {
418 of_node_put(dn);
419 return true;
420 }
421
Stas Sergeev4cba5c22015-07-20 17:49:57 -0700422 err = of_property_read_string(np, "managed", &managed);
423 if (err == 0 && strcmp(managed, "auto") != 0)
424 return true;
425
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200426 /* Old binding */
427 if (of_get_property(np, "fixed-link", &len) &&
428 len == (5 * sizeof(__be32)))
429 return true;
430
431 return false;
432}
433EXPORT_SYMBOL(of_phy_is_fixed_link);
434
435int of_phy_register_fixed_link(struct device_node *np)
436{
437 struct fixed_phy_status status = {};
438 struct device_node *fixed_link_node;
439 const __be32 *fixed_link_prop;
Andrew Lunna5597002015-08-31 15:56:53 +0200440 int link_gpio;
Stas Sergeev4cba5c22015-07-20 17:49:57 -0700441 int len, err;
Petri Gyntherfd2ef0b2014-10-06 11:38:30 -0700442 struct phy_device *phy;
Stas Sergeev4cba5c22015-07-20 17:49:57 -0700443 const char *managed;
444
445 err = of_property_read_string(np, "managed", &managed);
446 if (err == 0) {
447 if (strcmp(managed, "in-band-status") == 0) {
448 /* status is zeroed, namely its .link member */
Andrew Lunna5597002015-08-31 15:56:53 +0200449 phy = fixed_phy_register(PHY_POLL, &status, -1, np);
Sergei Shtylyov5189b1d2016-03-13 00:34:58 +0300450 return PTR_ERR_OR_ZERO(phy);
Stas Sergeev4cba5c22015-07-20 17:49:57 -0700451 }
452 }
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200453
454 /* New binding */
455 fixed_link_node = of_get_child_by_name(np, "fixed-link");
456 if (fixed_link_node) {
457 status.link = 1;
Richard Retanubuna72e1542014-06-20 10:11:07 -0400458 status.duplex = of_property_read_bool(fixed_link_node,
459 "full-duplex");
Johan Hovold48c16992016-11-16 15:20:36 +0100460 if (of_property_read_u32(fixed_link_node, "speed",
461 &status.speed)) {
462 of_node_put(fixed_link_node);
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200463 return -EINVAL;
Johan Hovold48c16992016-11-16 15:20:36 +0100464 }
Richard Retanubuna72e1542014-06-20 10:11:07 -0400465 status.pause = of_property_read_bool(fixed_link_node, "pause");
466 status.asym_pause = of_property_read_bool(fixed_link_node,
467 "asym-pause");
Andrew Lunna5597002015-08-31 15:56:53 +0200468 link_gpio = of_get_named_gpio_flags(fixed_link_node,
469 "link-gpios", 0, NULL);
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200470 of_node_put(fixed_link_node);
Andrew Lunna5597002015-08-31 15:56:53 +0200471 if (link_gpio == -EPROBE_DEFER)
472 return -EPROBE_DEFER;
473
474 phy = fixed_phy_register(PHY_POLL, &status, link_gpio, np);
Sergei Shtylyov5189b1d2016-03-13 00:34:58 +0300475 return PTR_ERR_OR_ZERO(phy);
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200476 }
477
478 /* Old binding */
479 fixed_link_prop = of_get_property(np, "fixed-link", &len);
480 if (fixed_link_prop && len == (5 * sizeof(__be32))) {
481 status.link = 1;
482 status.duplex = be32_to_cpu(fixed_link_prop[1]);
483 status.speed = be32_to_cpu(fixed_link_prop[2]);
484 status.pause = be32_to_cpu(fixed_link_prop[3]);
485 status.asym_pause = be32_to_cpu(fixed_link_prop[4]);
Andrew Lunna5597002015-08-31 15:56:53 +0200486 phy = fixed_phy_register(PHY_POLL, &status, -1, np);
Sergei Shtylyov5189b1d2016-03-13 00:34:58 +0300487 return PTR_ERR_OR_ZERO(phy);
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200488 }
489
490 return -ENODEV;
491}
492EXPORT_SYMBOL(of_phy_register_fixed_link);
Johan Hovold3f650472016-11-28 19:24:55 +0100493
494void of_phy_deregister_fixed_link(struct device_node *np)
495{
496 struct phy_device *phydev;
497
498 phydev = of_phy_find_device(np);
499 if (!phydev)
500 return;
501
502 fixed_phy_unregister(phydev);
503
504 put_device(&phydev->mdio.dev); /* of_phy_find_device() */
505 phy_device_free(phydev); /* fixed_phy_register() */
506}
507EXPORT_SYMBOL(of_phy_deregister_fixed_link);