4  * SPDX-License-Identifier: Apache-2.0
8  * downloads/en/DeviceDoc/KSZ9021RL-RN-Data-Sheet-DS00003050A.pdf)
51 #define PHY_AUTOCAP	      BIT(3) /* Auto-negotiation capability */
55 /* Auto-Negotiation Advertisement */
64 /* 1000Base-T Control */
83 		uint16_t phy_value, struct eth_cyclonev_priv *p);
85 		uint16_t *rdval, struct eth_cyclonev_priv *p);
87 		uint16_t phy_value, struct eth_cyclonev_priv *p);
89 		uint16_t *rdval, struct eth_cyclonev_priv *p);
90 int alt_eth_phy_config(uint16_t instance, struct eth_cyclonev_priv *p);
91 int alt_eth_phy_reset(uint16_t instance, struct eth_cyclonev_priv *p);
93 				     uint16_t instance, struct eth_cyclonev_priv *p);
96 		uint16_t phy_value, struct eth_cyclonev_priv *p)  in alt_eth_phy_write_register()  argument
103 		return -1;  in alt_eth_phy_write_register()
122 	sys_write32(phy_value & 0xffff, EMAC_GMAC_GMII_DATA_ADDR(p->base_addr));  in alt_eth_phy_write_register()
124 	sys_write32(tmpreg & 0xffff, EMAC_GMAC_GMII_ADDR_ADDR(p->base_addr));  in alt_eth_phy_write_register()
130 		tmpreg = sys_read32(EMAC_GMAC_GMII_ADDR_ADDR(p->base_addr));  in alt_eth_phy_write_register()
135 		return -1;  in alt_eth_phy_write_register()
143 		struct eth_cyclonev_priv *p)  in alt_eth_phy_read_register()  argument
150 		return -1;  in alt_eth_phy_read_register()
169 	sys_write32(tmpreg & 0xffff, EMAC_GMAC_GMII_ADDR_ADDR(p->base_addr));  in alt_eth_phy_read_register()
174 		tmpreg = sys_read32(EMAC_GMAC_GMII_ADDR_ADDR(p->base_addr));  in alt_eth_phy_read_register()
179 		return -1;  in alt_eth_phy_read_register()
183 	*rdval = sys_read32(EMAC_GMAC_GMII_DATA_ADDR(p->base_addr));  in alt_eth_phy_read_register()
189 					uint16_t phy_value, struct eth_cyclonev_priv *p)  in alt_eth_phy_write_register_extended()  argument
194 					KSZPHY_EXTREG_WRITE | phy_reg, p);  in alt_eth_phy_write_register_extended()
196 	if (rc == -1) {  in alt_eth_phy_write_register_extended()
200 	rc = alt_eth_phy_write_register(emac_instance, MII_KSZPHY_EXTREG_WRITE, phy_value, p);  in alt_eth_phy_write_register_extended()
205 		struct eth_cyclonev_priv *p)  in alt_eth_phy_read_register_extended()  argument
209 	rc = alt_eth_phy_write_register(emac_instance, MII_KSZPHY_EXTREG, phy_reg, p);  in alt_eth_phy_read_register_extended()
211 	if (rc == -1) {  in alt_eth_phy_read_register_extended()
216 	rc = alt_eth_phy_read_register(emac_instance, MII_KSZPHY_EXTREG_READ, rdval, p);  in alt_eth_phy_read_register_extended()
221 int alt_eth_phy_config(uint16_t instance, struct eth_cyclonev_priv *p)  in alt_eth_phy_config()  argument
227 	/*--------------------   Configure the PHY skew values  ----------------*/  in alt_eth_phy_config()
230 						 PHY_CLK_AND_CONTROL_PAD_SKEW_VALUE, p);  in alt_eth_phy_config()
231 	if (rc == -1) {  in alt_eth_phy_config()
236 						 PHY_RX_DATA_PAD_SKEW_VALUE, p);  in alt_eth_phy_config()
237 	if (rc == -1) {  in alt_eth_phy_config()
241 	/* Implement Auto-negotiation Process */  in alt_eth_phy_config()
243 	/* Check PHY Status if auto-negotiation is supported */  in alt_eth_phy_config()
244 	rc = alt_eth_phy_read_register(instance, PHY_BSR, &rdval, p);  in alt_eth_phy_config()
245 	if (((rdval & PHY_AUTOCAP) == 0) || (rc == -1)) {  in alt_eth_phy_config()
246 		return -1;  in alt_eth_phy_config()
249 	/* Set Advertise capabilities for 10Base-T/  in alt_eth_phy_config()
250 	 *10Base-T full-duplex/100Base-T/100Base-T full-duplex  in alt_eth_phy_config()
252 	rc = alt_eth_phy_read_register(instance, PHY_AUTON, &rdval, p);  in alt_eth_phy_config()
253 	if (rc == -1) {  in alt_eth_phy_config()
259 	rc = alt_eth_phy_write_register(instance, PHY_AUTON, rdval, p);  in alt_eth_phy_config()
260 	if (rc == -1) {  in alt_eth_phy_config()
264 	/* Set Advertise capabilities for 1000 Base-T/1000 Base-T full-duplex */  in alt_eth_phy_config()
269 					, p);  in alt_eth_phy_config()
270 	if (rc == -1) {  in alt_eth_phy_config()
278 		rc = alt_eth_phy_read_register(instance, PHY_BSR, &rdval, p);  in alt_eth_phy_config()
282 	if ((timeout == PHY_READ_TO) || (rc == -1)) {  in alt_eth_phy_config()
284 		return -1;  in alt_eth_phy_config()
289 	rc = alt_eth_phy_read_register(instance, PHY_BCR, &rdval, p);  in alt_eth_phy_config()
290 	if (rc == -1) {  in alt_eth_phy_config()
296 	rc = alt_eth_phy_write_register(instance, PHY_BCR, rdval, p);  in alt_eth_phy_config()
297 	if (rc == -1) {  in alt_eth_phy_config()
301 	/* Wait until the auto-negotiation is completed */  in alt_eth_phy_config()
305 		rc = alt_eth_phy_read_register(instance, PHY_BSR, &rdval, p);  in alt_eth_phy_config()
309 	if ((timeout == PHY_READ_TO) || (rc == -1)) {  in alt_eth_phy_config()
310 		alt_eth_phy_read_register(instance, PHY_BSR, &rdval, p);  in alt_eth_phy_config()
312 		return -1;  in alt_eth_phy_config()
319 int alt_eth_phy_reset(uint16_t instance, struct eth_cyclonev_priv *p)  in alt_eth_phy_reset()  argument
326 	if ((alt_eth_phy_write_register(instance, PHY_BCR, PHY_RESET, p)) != 0) {  in alt_eth_phy_reset()
328 		return -1;  in alt_eth_phy_reset()
334 		rc = alt_eth_phy_read_register(instance, PHY_BCR, &rdval, p);  in alt_eth_phy_reset()
335 		if (((rdval & PHY_RESET) == 0) || (rc == -1)) {  in alt_eth_phy_reset()
341 		return -1;  in alt_eth_phy_reset()
350 				     uint16_t instance, struct eth_cyclonev_priv *p)  in alt_eth_phy_get_duplex_and_speed()  argument
357 	rc = alt_eth_phy_read_register(instance, PHY_CR, &regval, p);  in alt_eth_phy_get_duplex_and_speed()