1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright 2011 Freescale Semiconductor, Inc.
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_GBIT_FEATURES (PHY_BASIC_FEATURES | \
57 #define PHY_10G_FEATURES (PHY_GBIT_FEATURES | \
58 SUPPORTED_10000baseT_Full)
60 #ifndef PHY_ANEG_TIMEOUT
61 #define PHY_ANEG_TIMEOUT 4000
67 #define MDIO_NAME_LEN 32
70 struct list_head link;
71 char name[MDIO_NAME_LEN];
73 int (*read)(struct mii_dev *bus, int addr, int devad, int reg);
74 int (*write)(struct mii_dev *bus, int addr, int devad, int reg,
76 int (*reset)(struct mii_dev *bus);
77 struct phy_device *phymap[PHY_MAX_ADDR];
81 /* struct phy_driver: a structure which defines PHY behavior
83 * uid will contain a number which represents the PHY. During
84 * startup, the driver will poll the PHY to find out what its
85 * UID--as defined by registers 2 and 3--is. The 32-bit result
86 * gotten from the PHY will be masked to
87 * discard any bits which may change based on revision numbers
88 * unimportant to functionality
99 /* Called to do any driver startup necessities */
100 /* Will be called during phy_connect */
101 int (*probe)(struct phy_device *phydev);
103 /* Called to configure the PHY, and modify the controller
104 * based on the results. Should be called after phy_connect */
105 int (*config)(struct phy_device *phydev);
107 /* Called when starting up the controller */
108 int (*startup)(struct phy_device *phydev);
110 /* Called when bringing down the controller */
111 int (*shutdown)(struct phy_device *phydev);
113 int (*readext)(struct phy_device *phydev, int addr, int devad, int reg);
114 int (*writeext)(struct phy_device *phydev, int addr, int devad, int reg,
117 /* Phy specific driver override for reading a MMD register */
118 int (*read_mmd)(struct phy_device *phydev, int devad, int reg);
120 /* Phy specific driver override for writing a MMD register */
121 int (*write_mmd)(struct phy_device *phydev, int devad, int reg,
124 /* driver private data */
129 /* Information about the PHY type */
130 /* And management functions */
132 struct phy_driver *drv;
138 /* forced speed & duplex (no autoneg)
139 * partner speed & duplex & pause (autoneg)
144 /* The most recently read link state */
147 phy_interface_t interface;
171 * phy_reset() - Resets the specified PHY
172 * Issues a reset of the PHY and waits for it to complete
174 * @phydev: PHY to reset
175 * @return: 0 if OK, -ve on error
177 int phy_reset(struct phy_device *phydev);
180 * phy_find_by_mask() - Searches for a PHY on the specified MDIO bus
181 * The function checks the PHY addresses flagged in phy_mask and returns a
182 * phy_device pointer if it detects a PHY.
183 * This function should only be called if just one PHY is expected to be present
184 * in the set of addresses flagged in phy_mask. If multiple PHYs are present,
185 * it is undefined which of these PHYs is returned.
187 * @bus: MII/MDIO bus to scan
188 * @phy_mask: bitmap of PYH addresses to scan
189 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
191 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask);
193 #ifdef CONFIG_PHY_FIXED
196 * fixed_phy_create() - create an unconnected fixed-link pseudo-PHY device
197 * @node: OF node for the container of the fixed-link node
199 * Description: Creates a struct phy_device based on a fixed-link of_node
200 * description. Can be used without phy_connect by drivers which do not expose
201 * a UCLASS_ETH udevice.
203 struct phy_device *fixed_phy_create(ofnode node);
207 static inline struct phy_device *fixed_phy_create(ofnode node)
215 * phy_connect() - Creates a PHY device for the Ethernet interface
216 * Creates a PHY device for the PHY at the given address, if one doesn't exist
217 * already, and associates it with the Ethernet device.
218 * The function may be called with addr <= 0, in this case addr value is ignored
219 * and the bus is scanned to detect a PHY. Scanning should only be used if only
220 * one PHY is expected to be present on the MDIO bus, otherwise it is undefined
221 * which PHY is returned.
223 * @bus: MII/MDIO bus that hosts the PHY
224 * @addr: PHY address on MDIO bus
225 * @dev: Ethernet device to associate to the PHY
226 * @interface: type of MAC-PHY interface
227 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
229 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
231 phy_interface_t interface);
233 * phy_device_create() - Create a PHY device
235 * @bus: MII/MDIO bus that hosts the PHY
236 * @addr: PHY address on MDIO bus
237 * @phy_id: where to store the ID retrieved
238 * @is_c45: Device Identifiers if is_c45
239 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
241 struct phy_device *phy_device_create(struct mii_dev *bus, int addr,
242 u32 phy_id, bool is_c45);
245 * phy_connect_phy_id() - Connect to phy device by reading PHY id
248 * @bus: MII/MDIO bus that hosts the PHY
249 * @dev: Ethernet device to associate to the PHY
250 * @return: pointer to phy_device if a PHY is found,
253 struct phy_device *phy_connect_phy_id(struct mii_dev *bus, struct udevice *dev,
256 static inline ofnode phy_get_ofnode(struct phy_device *phydev)
258 if (ofnode_valid(phydev->node))
261 return dev_ofnode(phydev->dev);
265 * phy_read_mmd_poll_timeout - Periodically poll a PHY register until a
266 * condition is met or a timeout occurs
268 * @phydev: The phy_device struct
269 * @devaddr: The MMD to read from
270 * @regnum: The register on the MMD to read
271 * @val: Variable to read the register into
272 * @cond: Break condition (usually involving @val)
273 * @sleep_us: Maximum time to sleep between reads in us (0
274 * tight-loops). Should be less than ~20ms since usleep_range
275 * is used (see Documentation/timers/timers-howto.rst).
276 * @timeout_us: Timeout in us, 0 means never timeout
277 * @sleep_before_read: if it is true, sleep @sleep_us before read.
278 * Returns 0 on success and -ETIMEDOUT upon a timeout. In either
279 * case, the last read value at @args is stored in @val. Must not
280 * be called from atomic context if sleep_us or timeout_us are used.
282 #define phy_read_mmd_poll_timeout(phydev, devaddr, regnum, val, cond, \
283 sleep_us, timeout_us, sleep_before_read) \
285 int __ret = read_poll_timeout(phy_read_mmd, val, (cond) || val < 0, \
286 sleep_us, timeout_us, \
287 phydev, devaddr, regnum); \
291 dev_err(phydev->dev, "%s failed: %d\n", __func__, __ret); \
295 int phy_read(struct phy_device *phydev, int devad, int regnum);
296 int phy_write(struct phy_device *phydev, int devad, int regnum, u16 val);
297 void phy_mmd_start_indirect(struct phy_device *phydev, int devad, int regnum);
298 int phy_read_mmd(struct phy_device *phydev, int devad, int regnum);
299 int phy_write_mmd(struct phy_device *phydev, int devad, int regnum, u16 val);
300 int phy_set_bits_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
301 int phy_clear_bits_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
302 int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum,
304 int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum,
307 int phy_startup(struct phy_device *phydev);
308 int phy_config(struct phy_device *phydev);
309 int phy_shutdown(struct phy_device *phydev);
310 int phy_set_supported(struct phy_device *phydev, u32 max_speed);
311 int phy_modify(struct phy_device *phydev, int devad, int regnum, u16 mask,
313 int genphy_config_aneg(struct phy_device *phydev);
314 int genphy_restart_aneg(struct phy_device *phydev);
315 int genphy_update_link(struct phy_device *phydev);
316 int genphy_parse_link(struct phy_device *phydev);
317 int genphy_config(struct phy_device *phydev);
318 int genphy_startup(struct phy_device *phydev);
319 int genphy_shutdown(struct phy_device *phydev);
320 int gen10g_config(struct phy_device *phydev);
321 int gen10g_startup(struct phy_device *phydev);
322 int gen10g_shutdown(struct phy_device *phydev);
323 int gen10g_discover_mmds(struct phy_device *phydev);
326 * U_BOOT_PHY_DRIVER() - Declare a new U-Boot driver
327 * @__name: name of the driver
329 #define U_BOOT_PHY_DRIVER(__name) \
330 ll_entry_declare(struct phy_driver, __name, phy_driver)
332 int board_phy_config(struct phy_device *phydev);
333 int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id);
336 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
337 * is RGMII (all variants)
338 * @phydev: the phy_device struct
339 * @return: true if MII bus is RGMII or false if it is not
341 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
343 switch (phydev->interface) {
344 case PHY_INTERFACE_MODE_RGMII:
345 case PHY_INTERFACE_MODE_RGMII_ID:
346 case PHY_INTERFACE_MODE_RGMII_RXID:
347 case PHY_INTERFACE_MODE_RGMII_TXID:
354 bool phy_interface_is_ncsi(void);
356 /* PHY UIDs for various PHYs that are referenced in external code */
357 #define PHY_UID_CS4340 0x13e51002
358 #define PHY_UID_CS4223 0x03e57003
359 #define PHY_UID_TN2020 0x00a19410
360 #define PHY_UID_IN112525_S03 0x02107440