8 /* SiLabs Giant Gecko GG11 Ethernet PHY driver. */
24 /* Enable MDIO serial bus between MAC and PHY. */
30 /* Enable MDIO serial bus between MAC and PHY. */
36 /* Wait PHY operation complete. */
53 /* Send command to PHY over MDIO serial bus */
59 	/* Write PHY management register */  in mdio_bus_send()
70 	/* Wait until PHY is ready */  in mdio_bus_send()
79 /* Read PHY register. */
80 static int phy_read(const struct phy_gecko_dev *phy, uint8_t reg_addr,  in phy_read()  argument
83 	ETH_TypeDef *const eth = phy->regs;  in phy_read()
84 	uint8_t phy_addr = phy->address;  in phy_read()
98 /* Write PHY register. */
99 static int phy_write(const struct phy_gecko_dev *phy, uint8_t reg_addr,  in phy_write()  argument
102 	ETH_TypeDef *const eth = phy->regs;  in phy_write()
103 	uint8_t phy_addr = phy->address;  in phy_write()
108 /* Issue a PHY soft reset. */
109 static int phy_soft_reset(const struct phy_gecko_dev *phy)  in phy_soft_reset()  argument
116 	retval = phy_write(phy, MII_BMCR, MII_BMCR_RESET);  in phy_soft_reset()
122 	 * IEEE 802.3, Section 2, Subsection 22.2.4.1.1 a PHY reset may take  in phy_soft_reset()
132 		retval = phy_read(phy, MII_BMCR, &phy_reg);  in phy_soft_reset()
141 int phy_gecko_init(const struct phy_gecko_dev *phy)  in phy_gecko_init()  argument
143 	ETH_TypeDef *const eth = phy->regs;  in phy_gecko_init()
148 	LOG_INF("Soft Reset of ETH PHY");  in phy_gecko_init()
149 	phy_soft_reset(phy);  in phy_gecko_init()
151 	/* Verify that the PHY device is responding */  in phy_gecko_init()
152 	phy_id = phy_gecko_id_get(phy);  in phy_gecko_init()
154 		LOG_ERR("Unable to detect a valid PHY");  in phy_gecko_init()
158 	LOG_INF("PHYID: 0x%X at addr: %d", phy_id, phy->address);  in phy_gecko_init()
165 uint32_t phy_gecko_id_get(const struct phy_gecko_dev *phy)  in phy_gecko_id_get()  argument
167 	ETH_TypeDef *const eth = phy->regs;  in phy_gecko_id_get()
173 	if (phy_read(phy, MII_PHYID1R, &phy_reg) < 0) {  in phy_gecko_id_get()
179 	if (phy_read(phy, MII_PHYID2R, &phy_reg) < 0) {  in phy_gecko_id_get()
190 int phy_gecko_auto_negotiate(const struct phy_gecko_dev *phy,  in phy_gecko_auto_negotiate()  argument
193 	ETH_TypeDef *const eth = phy->regs;  in phy_gecko_auto_negotiate()
202 	LOG_DBG("Starting ETH PHY auto-negotiate sequence");  in phy_gecko_auto_negotiate()
204 	/* Read PHY default advertising parameters */  in phy_gecko_auto_negotiate()
205 	retval = phy_read(phy, MII_ANAR, &ability_adv);  in phy_gecko_auto_negotiate()
211 	retval = phy_read(phy, MII_BMCR, &val);  in phy_gecko_auto_negotiate()
217 	val &= ~MII_BMCR_ISOLATE;  /* Don't isolate the PHY */  in phy_gecko_auto_negotiate()
219 	retval = phy_write(phy, MII_BMCR, val);  in phy_gecko_auto_negotiate()
233 		retval = phy_read(phy, MII_BMSR, &val);  in phy_gecko_auto_negotiate()
239 	LOG_DBG("PHY auto-negotiate sequence completed");  in phy_gecko_auto_negotiate()
242 	retval = phy_read(phy, MII_ANLPAR, &ability_rcvd);  in phy_gecko_auto_negotiate()
267 bool phy_gecko_is_linked(const struct phy_gecko_dev *phy)  in phy_gecko_is_linked()  argument
269 	ETH_TypeDef *const eth = phy->regs;  in phy_gecko_is_linked()
275 	if (phy_read(phy, MII_BMSR, &phy_reg) < 0) {  in phy_gecko_is_linked()