4  * PHY management interface implementation
6  * - Marvell Alaska 88E1111 (QEMU simulated PHY)
25 /* Basic MDIO read / write functions for PHY access */
28  * @brief Read PHY data via the MDIO interface
29  * Reads data from a PHY attached to the respective GEM's MDIO interface
32  * @param phy_addr  MDIO address of the PHY to be accessed
33  * @param reg_addr  Index of the PHY register to be read
34  * @return          16-bit data word received from the PHY
59 		LOG_ERR("GEM@0x%08X read from PHY address %hhu, "  in phy_xlnx_gem_mdio_read()
71 	/* PHY address */  in phy_xlnx_gem_mdio_read()
92 		LOG_ERR("GEM@0x%08X read from PHY address %hhu, "  in phy_xlnx_gem_mdio_read()
99 	 * Read the data returned by the PHY -> lower 16 bits of the PHY main-  in phy_xlnx_gem_mdio_read()
107  * @brief Writes PHY data via the MDIO interface
108  * Writes data to a PHY attached to the respective GEM's MDIO interface
111  * @param phy_addr  MDIO address of the PHY to be accessed
112  * @param reg_addr  Index of the PHY register to be written to
138 		LOG_ERR("GEM@0x%08X write to PHY address %hhu, "  in phy_xlnx_gem_mdio_write()
150 	/* PHY address */  in phy_xlnx_gem_mdio_write()
173 		LOG_ERR("GEM@0x%08X write to PHY address %hhu, "  in phy_xlnx_gem_mdio_write()
180  * Vendor-specific PHY management functions for:
181  * Marvell Alaska 88E1111 (QEMU simulated PHY)
192  * @brief Marvell Alaska PHY reset function
193  * Reset function for the Marvell Alaska PHY series
206 	 * bit [15] = PHY reset. Register 0/0 access is R/M/W. Comp.  in phy_xlnx_gem_marvell_alaska_reset()
221 		LOG_ERR("%s reset PHY address %hhu (Marvell Alaska) timed out",  in phy_xlnx_gem_marvell_alaska_reset()
227  * @brief Marvell Alaska PHY configuration function
228  * Configuration function for the Marvell Alaska PHY series
243 	 * for now, afterwards, trigger a PHY reset.  in phy_xlnx_gem_marvell_alaska_cfg()
280 		 * This reset bit is not to be confused with the actual PHY  in phy_xlnx_gem_marvell_alaska_cfg()
295 			LOG_ERR("%s configure PHY address %hhu (Marvell Alaska) timed out",  in phy_xlnx_gem_marvell_alaska_cfg()
310 	 * 88E1111: Page any, register address 16 = PHY specific control register,  in phy_xlnx_gem_marvell_alaska_cfg()
328 	 * detect relevant state changes, also, PHY management could  in phy_xlnx_gem_marvell_alaska_cfg()
331 	 * PHY interrupt line isn't wired up, therefore, the GEM can  in phy_xlnx_gem_marvell_alaska_cfg()
332 	 * never trigger a PHY interrupt. Still, the PHY interrupts  in phy_xlnx_gem_marvell_alaska_cfg()
353 	/* Trigger a PHY Reset, affecting pages 0, 2, 3, 5, 7. */  in phy_xlnx_gem_marvell_alaska_cfg()
365 	 * auto-negotiation, then re-enable auto-negotiation. PHY link speed  in phy_xlnx_gem_marvell_alaska_cfg()
460 	 * Trigger a PHY reset, affecting pages 0, 2, 3, 5, 7.  in phy_xlnx_gem_marvell_alaska_cfg()
479  * @brief Marvell Alaska PHY status change polling function
480  * Status change polling function for the Marvell Alaska PHY series
495 	 * PHY status change detection is implemented by reading the  in phy_xlnx_gem_marvell_alaska_poll_sc()
529  * @brief Marvell Alaska PHY link status polling function
530  * Link status polling function for the Marvell Alaska PHY series
533  * @return 1 if the PHY indicates link up, 0 if the link is down
553  * @brief Marvell Alaska PHY link speed polling function
554  * Link speed polling function for the Marvell Alaska PHY series
557  * @return    Enum containing the current link speed reported by the PHY
600  * Vendor-specific PHY management functions for:
610  * @brief TI TLK105 & DP83822 PHY reset function
633 		LOG_ERR("%s reset PHY address %hhu (TI TLK105/DP83822) timed out",  in phy_xlnx_gem_ti_dp83822_reset()
639  * @brief TI TLK105 & DP83822 PHY configuration function
718  * @brief TI TLK105 & DP83822 PHY status change polling function
760  * @brief TI TLK105 & DP83822 PHY link status polling function
764  * @return 1 if the PHY indicates link up, 0 if the link is down
787  * @brief TI TLK105 & DP83822 PHY link speed polling function
791  * @return    Enum containing the current link speed reported by the PHY
820  * @brief Marvell Alaska PHY function pointer table
821  * Function pointer table for the Marvell Alaska PHY series
833  * @brief Texas Instruments TLK105 & DP83822 PHY function pointer table
834  * Function pointer table for the Texas Instruments TLK105 / DP83822 PHY
854  * supported PHY specifications, consisting of the PHY ID plus a mask
855  * for masking out variable parts of the PHY ID such as hardware revisions,
856  * as well as a textual description of the PHY model and a pointer to
857  * the corresponding PHY management function pointer table.
887  * @brief Top-level PHY detection function
888  * Top-level PHY detection function called by the GEM driver if PHY management
890  * and does not require any knowledge regarding PHY vendors, models etc.
893  * @retval    -ENOTSUP if PHY management is disabled for the current GEM
895  * @retval    -EIO if no (supported) PHY was detected
896  * @retval    0 if a supported PHY has been detected
912 	 * Clear the PHY address & ID in the device data struct -> may be  in phy_xlnx_gem_detect()
914 	 * is disabled. If eventually a supported PHY is found, a non-  in phy_xlnx_gem_detect()
926 	 * PHY detection as described in Zynq-7000 TRM, chapter 16.3.4,  in phy_xlnx_gem_detect()
932 		/* Read the upper & lower PHY ID 16-bit words */  in phy_xlnx_gem_detect()
943 			LOG_DBG("%s detected PHY at address %hhu: "  in phy_xlnx_gem_detect()
950 			 * current PHY is supported, store all related data  in phy_xlnx_gem_detect()
958 					LOG_DBG("%s identified supported PHY: %s",  in phy_xlnx_gem_detect()
963 					 * Store the numeric values of the PHY ID and address  in phy_xlnx_gem_detect()
978 	LOG_ERR("%s PHY detection failed", dev->name);  in phy_xlnx_gem_detect()