21  *	UTP Register space	|	FIBER Register space
23  * |	UTP MII			|	FIBER MII		|
25  * |	UTP Extended		|	FIBER Extended		|
104 /* FIBER Auto-Negotiation link partner ability */
149 /* Phy fiber Link timer cfg2 Register */
186 /* 3 phy polling modes,poll mode combines utp and fiber mode*/
358 	 * this means that yt8521 may work in utp or fiber mode which depends
532  * YTPHY_INTERRUPT_ENABLE_REG of UTP is special, fiber also use this register.
1244  * yt8521_adjust_status() - update speed and duplex to phydev. when in fiber
1248  * @is_utp: false(yt8521 work in fiber mode) or true(yt8521 work in utp mode)
1265 		duplex = DUPLEX_FULL;	/* for fiber, it always DUPLEX_FULL */  in yt8521_adjust_status()
1274 			/* for fiber, it will never run here, default to  in yt8521_adjust_status()
1329  * returns 1 (utp or fiber link),0 (no link) or negative errno code
1346 	/* YT8521 has two reg space (utp/fiber) for linkup with utp/fiber  in yt8521_read_status_paged()
1347 	 * respectively. but for utp/fiber combo mode, reg space should be  in yt8521_read_status_paged()
1368 	/* When PHY is in fiber mode, speed transferred from 1000Mbps to  in yt8521_read_status_paged()
1386 				    "%s, fiber link down detect, latch = %04x, curr = %04x\n",  in yt8521_read_status_paged()
1470 					    "UTP" : "Fiber");  in yt8521_read_status()
1478 				    "UTP" : "Fiber");  in yt8521_read_status()
1504  * YT8521 has two space (utp/fiber) and three mode (utp/fiber/poll), each space
1550  * YT8521 has two space (utp/fiber) and three mode (utp/fiber/poll), each space
1778  * fiber's features.
1780  * @dst: a pointer to store fiber's features
1815 	/* disable Fiber auto sensing */  in yt8521_fiber_setup_forced()
1882 	/* enable Fiber auto sensing */  in yt8521_fiber_config_aneg()
1897 	/* When it is coming from fiber forced mode, add bmcr power down  in yt8521_fiber_config_aneg()
1909 	/* Setup fiber advertisement */  in yt8521_fiber_config_aneg()
2137 		 * mac and yt8521(utp and fiber).  in yt8521_config_aneg()
2167  * returns 0(no link)or 1(fiber or utp link) or negative errno code
2194  * returns 0(no link)or 1(fiber or utp link) or negative errno code
2325 		/* add fiber's features to phydev->supported */  in yt8521_get_features()