add support for YT8512 phy

arch/arm/src/imxrt/imxrt_enet.c

@@ -260,6 +260,15 @@
 #  define MMD1                  1
 #  define MMD1_PMA_STATUS1      1
 #  define MMD1_PS1_RECEIVE_LINK_STATUS (1 << 2)
+#elif defined(CONFIG_ETH0_PHY_YT8512)
+#  define BOARD_PHY_NAME        "YT8512"
+#  define BOARD_PHYID1          MII_PHYID1_YT8512
+#  define BOARD_PHYID2          MII_PHYID2_YT8512
+#  define BOARD_PHY_STATUS      MII_YT8512_PHYSTS
+#  define BOARD_PHY_ADDR        (0)
+#  define BOARD_PHY_10BASET(s)  (((s) & MII_YT8512_PHYSTS_SPEED) == 0)
+#  define BOARD_PHY_100BASET(s) (((s) & MII_YT8512_PHYSTS_SPEED) != 0)
+#  define BOARD_PHY_ISDUPLEX(s) (((s) & MII_YT8512_PHYSTS_DUPLEX) != 0)
 #else
 #  error "Unrecognized or missing PHY selection"
 #endif
@@ -1852,11 +1861,12 @@ static int imxrt_ioctl(struct net_driver_s *dev, int cmd, unsigned long arg)
 #if defined(CONFIG_NETDEV_PHY_IOCTL) && defined(CONFIG_ARCH_PHY_INTERRUPT)
 static int imxrt_phyintenable(struct imxrt_driver_s *priv)
 {
-#if defined(CONFIG_ETH0_PHY_KSZ8051) || defined(CONFIG_ETH0_PHY_KSZ8061) || \
-    defined(CONFIG_ETH0_PHY_KSZ8081) || defined(CONFIG_ETH0_PHY_DP83825I)
   uint16_t phyval;
   int ret;
 
+#if defined(CONFIG_ETH0_PHY_KSZ8051) || defined(CONFIG_ETH0_PHY_KSZ8061) || \
+    defined(CONFIG_ETH0_PHY_KSZ8081) || defined(CONFIG_ETH0_PHY_DP83825I)
+
   /* Read the interrupt status register in order to clear any pending
    * interrupts
    */
@@ -1870,6 +1880,22 @@ static int imxrt_phyintenable(struct imxrt_driver_s *priv)
                            (MII_KSZ80X1_INT_LDEN | MII_KSZ80X1_INT_LUEN));
     }
 
+  return ret;
+#elif defined(CONFIG_ETH0_YT8512)
+
+  /* Read the interrupt status register in order to clear any pending
+   * interrupts
+   */
+
+  ret = imxrt_readmii(priv, priv->phyaddr, MII_YT8512_ISR, &phyval);
+  if (ret == OK)
+    {
+      /* Enable link up/down interrupts */
+
+      ret = imxrt_writemii(priv, priv->phyaddr, MII_YT8512_IMR,
+                           (MII_YT8512_IMR_LD_EN | MII_YT8512_IMR_LU_EN));
+    }
+
   return ret;
 #else
 #  error Unrecognized PHY
@@ -2404,6 +2430,43 @@ static inline int imxrt_initphy(struct imxrt_driver_s *priv, bool renogphy)
                      MII_ADVERTISE_10BASETXHALF |
                      MII_ADVERTISE_CSMA);
 
+#elif defined (CONFIG_ETH0_PHY_YT8512)
+
+      /* Reset PHY */
+
+      imxrt_writemii(priv, phyaddr, MII_MCR, MII_MCR_RESET);
+
+      /* Config LEDs */
+
+      imxrt_writemii(priv, phyaddr, MII_YT8512_DEBUG_ADDR_OFFSET,
+                     MII_YT8512_LED0);
+
+      imxrt_readmii(priv, phyaddr, MII_YT8512_DEBUG_DATA, &phydata);
+
+      imxrt_writemii(priv, phyaddr, MII_YT8512_DEBUG_ADDR_OFFSET,
+                     MII_YT8512_LED0);
+
+      imxrt_writemii(priv, phyaddr, MII_YT8512_DEBUG_DATA, 0x331);
+
+      imxrt_writemii(priv, phyaddr, MII_YT8512_DEBUG_ADDR_OFFSET,
+                     MII_YT8512_LED1);
+
+      imxrt_readmii(priv, phyaddr, MII_YT8512_DEBUG_DATA, &phydata);
+
+      imxrt_writemii(priv, phyaddr, MII_YT8512_DEBUG_ADDR_OFFSET,
+                     MII_YT8512_LED1);
+
+      imxrt_writemii(priv, phyaddr, MII_YT8512_DEBUG_DATA, 0x30);
+
+      /* Set negotiation */
+
+      imxrt_writemii(priv, phyaddr, MII_ADVERTISE,
+                     MII_ADVERTISE_100BASETXFULL |
+                     MII_ADVERTISE_100BASETXHALF |
+                     MII_ADVERTISE_10BASETXFULL |
+                     MII_ADVERTISE_10BASETXHALF |
+                     MII_ADVERTISE_CSMA);
+
 #endif
 #if !defined(CONFIG_ETH0_PHY_TJA1103)
 

drivers/net/Kconfig

@@ -468,6 +468,9 @@ config ETH0_PHY_LAN8742A
 config ETH0_PHY_DM9161
 	bool "Davicom DM9161 PHY"
 
+config ETH0_PHY_YT8512
+	bool "Motorcomm YT8512 PHY"
+
 endchoice
 
 choice
@@ -518,6 +521,9 @@ config ETH1_PHY_LAN8720
 config ETH1_PHY_DM9161
 	bool "Davicom DM9161 PHY"
 
+config ETH1_PHY_YT8512
+	bool "Motorcomm YT8512 PHY"
+
 endchoice
 
 config ARCH_PHY_100BASE_T1

include/nuttx/net/mii.h

@@ -212,6 +212,20 @@
 #define MII_LAN8740_IMR              0x1e      /* Interrupt Mask Register */
 #define MII_LAN8740_SCSR             0x1f      /* PHY Special Control/Status Register */
 
+/* Motorcomm YT8512C/YT8512H Extended Registers */
+
+#define MII_YT8512_PHYSFC            0x10      /* PHY Function conrtol Register */
+#define MII_YT8512_PHYSTS            0x11      /* PHY Status Register */
+#define MII_YT8512_IMR               0x12      /* Interrupt Mask Register */
+#define MII_YT8512_ISR               0x13      /* Interrupt Source Register */
+#define MII_YT8512_SADC              0x14      /* Speed auto downgrade control Register */
+#define MII_YT8512_REC               0x15      /* Rx Error Counter Register */
+#define MII_YT8512_DEBUG_ADDR_OFFSET 0x1E      /* Debug Register's Address Offset Register */
+#define MII_YT8512_DEBUG_DATA        0x1F      /* Debug Register's Data Register */
+
+#define MII_YT8512_LED0              0x40c0    /* LED0 control */
+#define MII_YT8512_LED1              0x40c3    /* LED1 control */
+
 /* MII register bit settings ************************************************/
 
 /* MII Control register bit definitions */
@@ -856,6 +870,31 @@
 #define MII_AR8031_PSSR_1000MBPS      (2 << 14)
 #define MII_AR8031_PSSR_DUPLEX        (1 << 13)  /* Bit 13:  Full duplex mode */
 
+/* YT8512 register bit settings *********************************************/
+
+/* YT8512 MII ID1/2 register bits */
+
+#define MII_PHYID1_YT8512             0x0000    /* ID1 value for YT8512 */
+#define MII_PHYID2_YT8512             0x0128    /* ID2 value for YT8512 */
+
+/* YT8512 Register 0x10: Specific function control register */
+
+/* YT8512 Register 0x11: Specific status */
+
+#define MII_YT8512_PHYSTS_SPEED       (1 << 14)
+#define MII_YT8512_PHYSTS_DUPLEX      (1 << 13)
+/* YT8512 Register 0x12: Interrupt mask */
+#define MII_YT8512_IMR_SPD_EN         (1 << 14)
+#define MII_YT8512_IMR_DUP_EN         (1 << 13)
+#define MII_YT8512_IMR_LD_EN          (1 << 11)
+#define MII_YT8512_IMR_LU_EN          (1 << 10)
+
+/* YT8512 Register 0x13: Interrupt status */
+
+/* YT8512 Register 0x14: Speed auto downgrade control */
+
+/* YT8512 Register 0x15: Rx error counter */
+
 /****************************************************************************
  * Type Definitions
  ****************************************************************************/