1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright 2011 Freescale Semiconductor, Inc.
4 * Andy Fleming <afleming@gmail.com>
6 * This file pretty much stolen from Linux's mii.h/ethtool.h/phy.h
13 #include <phy_interface.h>
14 #include <dm/ofnode.h>
16 #include <linux/errno.h>
17 #include <linux/list.h>
18 #include <linux/mii.h>
19 #include <linux/ethtool.h>
20 #include <linux/mdio.h>
24 #define PHY_FIXED_ID 0xa5a55a5a
25 #define PHY_NCSI_ID 0xbeefcafe
28 * There is no actual id for this.
29 * This is just a dummy id for gmii2rgmmi converter.
31 #define PHY_GMII2RGMII_ID 0x5a5a5a5a
33 #define PHY_MAX_ADDR 32
35 #define PHY_FLAG_BROKEN_RESET (1 << 0) /* soft reset not supported */
37 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
41 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
42 SUPPORTED_10baseT_Full)
44 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
45 SUPPORTED_100baseT_Full)
47 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
48 SUPPORTED_1000baseT_Full)
50 #define PHY_BASIC_FEATURES (PHY_10BT_FEATURES | \
51 PHY_100BT_FEATURES | \
54 #define PHY_100BT1_FEATURES (SUPPORTED_TP | \
56 SUPPORTED_100baseT_Full)
58 #define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \
61 #define PHY_10G_FEATURES (PHY_GBIT_FEATURES | \
62 SUPPORTED_10000baseT_Full)
64 #ifndef PHY_ANEG_TIMEOUT
65 #define PHY_ANEG_TIMEOUT 4000
71 #define MDIO_NAME_LEN 32
74 struct list_head link;
75 char name[MDIO_NAME_LEN];
77 int (*read)(struct mii_dev *bus, int addr, int devad, int reg);
78 int (*write)(struct mii_dev *bus, int addr, int devad, int reg,
80 int (*reset)(struct mii_dev *bus);
81 struct phy_device *phymap[PHY_MAX_ADDR];
85 /* struct phy_driver: a structure which defines PHY behavior
87 * uid will contain a number which represents the PHY. During
88 * startup, the driver will poll the PHY to find out what its
89 * UID--as defined by registers 2 and 3--is. The 32-bit result
90 * gotten from the PHY will be masked to
91 * discard any bits which may change based on revision numbers
92 * unimportant to functionality
103 /* Called to do any driver startup necessities */
104 /* Will be called during phy_connect */
105 int (*probe)(struct phy_device *phydev);
107 /* Called to configure the PHY, and modify the controller
108 * based on the results. Should be called after phy_connect */
109 int (*config)(struct phy_device *phydev);
111 /* Called when starting up the controller */
112 int (*startup)(struct phy_device *phydev);
114 /* Called when bringing down the controller */
115 int (*shutdown)(struct phy_device *phydev);
117 int (*readext)(struct phy_device *phydev, int addr, int devad, int reg);
118 int (*writeext)(struct phy_device *phydev, int addr, int devad, int reg,
121 /* Phy specific driver override for reading a MMD register */
122 int (*read_mmd)(struct phy_device *phydev, int devad, int reg);
124 /* Phy specific driver override for writing a MMD register */
125 int (*write_mmd)(struct phy_device *phydev, int devad, int reg,
128 struct list_head list;
130 /* driver private data */
135 /* Information about the PHY type */
136 /* And management functions */
138 struct phy_driver *drv;
145 struct eth_device *dev;
148 /* forced speed & duplex (no autoneg)
149 * partner speed & duplex & pause (autoneg)
154 /* The most recently read link state */
157 phy_interface_t interface;
181 * phy_read - Convenience function for reading a given PHY register
182 * @phydev: the phy_device struct
183 * @devad: The MMD to read from
184 * @regnum: register number to read
185 * @return: value for success or negative errno for failure
187 static inline int phy_read(struct phy_device *phydev, int devad, int regnum)
189 struct mii_dev *bus = phydev->bus;
191 if (!bus || !bus->read) {
192 debug("%s: No bus configured\n", __func__);
196 return bus->read(bus, phydev->addr, devad, regnum);
200 * phy_write - Convenience function for writing a given PHY register
201 * @phydev: the phy_device struct
202 * @devad: The MMD to read from
203 * @regnum: register number to write
204 * @val: value to write to @regnum
205 * @return: 0 for success or negative errno for failure
207 static inline int phy_write(struct phy_device *phydev, int devad, int regnum,
210 struct mii_dev *bus = phydev->bus;
212 if (!bus || !bus->write) {
213 debug("%s: No bus configured\n", __func__);
217 return bus->write(bus, phydev->addr, devad, regnum, val);
221 * phy_mmd_start_indirect - Convenience function for writing MMD registers
222 * @phydev: the phy_device struct
223 * @devad: The MMD to read from
224 * @regnum: register number to write
227 static inline void phy_mmd_start_indirect(struct phy_device *phydev, int devad,
230 /* Write the desired MMD Devad */
231 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL, devad);
233 /* Write the desired MMD register address */
234 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, regnum);
236 /* Select the Function : DATA with no post increment */
237 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL,
238 (devad | MII_MMD_CTRL_NOINCR));
242 * phy_read_mmd - Convenience function for reading a register
243 * from an MMD on a given PHY.
244 * @phydev: The phy_device struct
245 * @devad: The MMD to read from
246 * @regnum: The register on the MMD to read
247 * @return: Value for success or negative errno for failure
249 static inline int phy_read_mmd(struct phy_device *phydev, int devad,
252 struct phy_driver *drv = phydev->drv;
254 if (regnum > (u16)~0 || devad > 32)
257 /* driver-specific access */
259 return drv->read_mmd(phydev, devad, regnum);
261 /* direct C45 / C22 access */
262 if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES ||
263 devad == MDIO_DEVAD_NONE || !devad)
264 return phy_read(phydev, devad, regnum);
266 /* indirect C22 access */
267 phy_mmd_start_indirect(phydev, devad, regnum);
269 /* Read the content of the MMD's selected register */
270 return phy_read(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA);
274 * phy_write_mmd - Convenience function for writing a register
275 * on an MMD on a given PHY.
276 * @phydev: The phy_device struct
277 * @devad: The MMD to read from
278 * @regnum: The register on the MMD to read
279 * @val: value to write to @regnum
280 * @return: 0 for success or negative errno for failure
282 static inline int phy_write_mmd(struct phy_device *phydev, int devad,
285 struct phy_driver *drv = phydev->drv;
287 if (regnum > (u16)~0 || devad > 32)
290 /* driver-specific access */
292 return drv->write_mmd(phydev, devad, regnum, val);
294 /* direct C45 / C22 access */
295 if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES ||
296 devad == MDIO_DEVAD_NONE || !devad)
297 return phy_write(phydev, devad, regnum, val);
299 /* indirect C22 access */
300 phy_mmd_start_indirect(phydev, devad, regnum);
302 /* Write the data into MMD's selected register */
303 return phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, val);
307 * phy_set_bits_mmd - Convenience function for setting bits in a register
309 * @phydev: the phy_device struct
310 * @devad: the MMD containing register to modify
311 * @regnum: register number to modify
313 * @return: 0 for success or negative errno for failure
315 static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad,
320 value = phy_read_mmd(phydev, devad, regnum);
326 ret = phy_write_mmd(phydev, devad, regnum, value);
334 * phy_clear_bits_mmd - Convenience function for clearing bits in a register
336 * @phydev: the phy_device struct
337 * @devad: the MMD containing register to modify
338 * @regnum: register number to modify
339 * @val: bits to clear
340 * @return: 0 for success or negative errno for failure
342 static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad,
347 value = phy_read_mmd(phydev, devad, regnum);
353 ret = phy_write_mmd(phydev, devad, regnum, value);
360 #ifdef CONFIG_PHYLIB_10G
361 extern struct phy_driver gen10g_driver;
364 * List all 10G interfaces here, the assumption being that PHYs on these
367 static inline int is_10g_interface(phy_interface_t interface)
369 return interface == PHY_INTERFACE_MODE_XGMII ||
370 interface == PHY_INTERFACE_MODE_USXGMII ||
371 interface == PHY_INTERFACE_MODE_10GBASER;
377 * phy_init() - Initializes the PHY drivers
378 * This function registers all available PHY drivers
380 * @return: 0 if OK, -ve on error
385 * phy_reset() - Resets the specified PHY
386 * Issues a reset of the PHY and waits for it to complete
388 * @phydev: PHY to reset
389 * @return: 0 if OK, -ve on error
391 int phy_reset(struct phy_device *phydev);
394 * phy_find_by_mask() - Searches for a PHY on the specified MDIO bus
395 * The function checks the PHY addresses flagged in phy_mask and returns a
396 * phy_device pointer if it detects a PHY.
397 * This function should only be called if just one PHY is expected to be present
398 * in the set of addresses flagged in phy_mask. If multiple PHYs are present,
399 * it is undefined which of these PHYs is returned.
401 * @bus: MII/MDIO bus to scan
402 * @phy_mask: bitmap of PYH addresses to scan
403 * @interface: type of MAC-PHY interface
404 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
406 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask,
407 phy_interface_t interface);
409 #ifdef CONFIG_PHY_FIXED
412 * fixed_phy_create() - create an unconnected fixed-link pseudo-PHY device
413 * @node: OF node for the container of the fixed-link node
415 * Description: Creates a struct phy_device based on a fixed-link of_node
416 * description. Can be used without phy_connect by drivers which do not expose
417 * a UCLASS_ETH udevice.
419 struct phy_device *fixed_phy_create(ofnode node);
423 static inline struct phy_device *fixed_phy_create(ofnode node)
433 * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices
434 * @phydev: PHY device
435 * @dev: Ethernet device
437 void phy_connect_dev(struct phy_device *phydev, struct udevice *dev);
440 * phy_connect() - Creates a PHY device for the Ethernet interface
441 * Creates a PHY device for the PHY at the given address, if one doesn't exist
442 * already, and associates it with the Ethernet device.
443 * The function may be called with addr <= 0, in this case addr value is ignored
444 * and the bus is scanned to detect a PHY. Scanning should only be used if only
445 * one PHY is expected to be present on the MDIO bus, otherwise it is undefined
446 * which PHY is returned.
448 * @bus: MII/MDIO bus that hosts the PHY
449 * @addr: PHY address on MDIO bus
450 * @dev: Ethernet device to associate to the PHY
451 * @interface: type of MAC-PHY interface
452 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
454 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
456 phy_interface_t interface);
458 * phy_device_create() - Create a PHY device
460 * @bus: MII/MDIO bus that hosts the PHY
461 * @addr: PHY address on MDIO bus
462 * @phy_id: where to store the ID retrieved
463 * @is_c45: Device Identifiers if is_c45
464 * @interface: interface between the MAC and PHY
465 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
467 struct phy_device *phy_device_create(struct mii_dev *bus, int addr,
468 u32 phy_id, bool is_c45,
469 phy_interface_t interface);
472 * phy_connect_phy_id() - Connect to phy device by reading PHY id
475 * @bus: MII/MDIO bus that hosts the PHY
476 * @dev: Ethernet device to associate to the PHY
477 * @interface: Interface between the MAC and PHY
478 * @return: pointer to phy_device if a PHY is found,
481 struct phy_device *phy_connect_phy_id(struct mii_dev *bus, struct udevice *dev,
482 int phyaddr, phy_interface_t interface);
484 static inline ofnode phy_get_ofnode(struct phy_device *phydev)
486 if (ofnode_valid(phydev->node))
489 return dev_ofnode(phydev->dev);
494 * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices
495 * @phydev: PHY device
496 * @dev: Ethernet device
498 void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev);
501 * phy_connect() - Creates a PHY device for the Ethernet interface
502 * Creates a PHY device for the PHY at the given address, if one doesn't exist
503 * already, and associates it with the Ethernet device.
504 * The function may be called with addr <= 0, in this case addr value is ignored
505 * and the bus is scanned to detect a PHY. Scanning should only be used if only
506 * one PHY is expected to be present on the MDIO bus, otherwise it is undefined
507 * which PHY is returned.
509 * @bus: MII/MDIO bus that hosts the PHY
510 * @addr: PHY address on MDIO bus
511 * @dev: Ethernet device to associate to the PHY
512 * @interface: type of MAC-PHY interface
513 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
515 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
516 struct eth_device *dev,
517 phy_interface_t interface);
519 static inline ofnode phy_get_ofnode(struct phy_device *phydev)
521 return ofnode_null();
524 int phy_startup(struct phy_device *phydev);
525 int phy_config(struct phy_device *phydev);
526 int phy_shutdown(struct phy_device *phydev);
527 int phy_register(struct phy_driver *drv);
528 int phy_set_supported(struct phy_device *phydev, u32 max_speed);
529 int phy_modify(struct phy_device *phydev, int devad, int regnum, u16 mask,
531 int genphy_config_aneg(struct phy_device *phydev);
532 int genphy_restart_aneg(struct phy_device *phydev);
533 int genphy_update_link(struct phy_device *phydev);
534 int genphy_parse_link(struct phy_device *phydev);
535 int genphy_config(struct phy_device *phydev);
536 int genphy_startup(struct phy_device *phydev);
537 int genphy_shutdown(struct phy_device *phydev);
538 int gen10g_config(struct phy_device *phydev);
539 int gen10g_startup(struct phy_device *phydev);
540 int gen10g_shutdown(struct phy_device *phydev);
541 int gen10g_discover_mmds(struct phy_device *phydev);
543 int phy_b53_init(void);
544 int phy_mv88e61xx_init(void);
545 int phy_aquantia_init(void);
546 int phy_atheros_init(void);
547 int phy_broadcom_init(void);
548 int phy_cortina_init(void);
549 int phy_cortina_access_init(void);
550 int phy_davicom_init(void);
551 int phy_et1011c_init(void);
552 int phy_lxt_init(void);
553 int phy_marvell_init(void);
554 int phy_micrel_ksz8xxx_init(void);
555 int phy_micrel_ksz90x1_init(void);
556 int phy_meson_gxl_init(void);
557 int phy_natsemi_init(void);
558 int phy_nxp_c45_tja11xx_init(void);
559 int phy_nxp_tja11xx_init(void);
560 int phy_realtek_init(void);
561 int phy_smsc_init(void);
562 int phy_teranetics_init(void);
563 int phy_ti_init(void);
564 int phy_vitesse_init(void);
565 int phy_xilinx_init(void);
566 int phy_mscc_init(void);
567 int phy_fixed_init(void);
568 int phy_ncsi_init(void);
569 int phy_xilinx_gmii2rgmii_init(void);
571 int board_phy_config(struct phy_device *phydev);
572 int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id);
575 * phy_get_interface_by_name() - Look up a PHY interface name
577 * @str: PHY interface name, e.g. "mii"
578 * @return: PHY_INTERFACE_MODE_... value, or -1 if not found
580 int phy_get_interface_by_name(const char *str);
583 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
584 * is RGMII (all variants)
585 * @phydev: the phy_device struct
586 * @return: true if MII bus is RGMII or false if it is not
588 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
590 return phydev->interface >= PHY_INTERFACE_MODE_RGMII &&
591 phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID;
595 * phy_interface_is_sgmii - Convenience function for testing if a PHY interface
596 * is SGMII (all variants)
597 * @phydev: the phy_device struct
598 * @return: true if MII bus is SGMII or false if it is not
600 static inline bool phy_interface_is_sgmii(struct phy_device *phydev)
602 return phydev->interface >= PHY_INTERFACE_MODE_SGMII &&
603 phydev->interface <= PHY_INTERFACE_MODE_QSGMII;
606 /* PHY UIDs for various PHYs that are referenced in external code */
607 #define PHY_UID_CS4340 0x13e51002
608 #define PHY_UID_CS4223 0x03e57003
609 #define PHY_UID_TN2020 0x00a19410
610 #define PHY_UID_IN112525_S03 0x02107440