stm32/eth_phy: Add support for 1000Mbit PHY.

Signed-off-by: Damien George <[email protected]>

Author: dpgeorge

ports/stm32/eth_phy.c

@@ -31,8 +31,9 @@
 #if defined(MICROPY_HW_ETH_MDC)
 
 #define PHY_SCSR_LAN87XX                (0x001f)
-#define PHY_SCSR_LAN87XX_SPEED_Pos      (2)
-#define PHY_SCSR_LAN87XX_SPEED_Msk      (7)
+#define PHY_SCSR_LAN87XX_10M_Msk        (0x0004)
+#define PHY_SCSR_LAN87XX_100M_Msk       (0x0008)
+#define PHY_SCSR_LAN87XX_DUPLEX_Msk     (0x0010)
 
 #define PHY_SCSR_DP838XX                (0x0010)
 #define PHY_RECR_DP838XX                (0x0015)
@@ -41,8 +42,18 @@
 
 int16_t eth_phy_lan87xx_get_link_status(uint32_t phy_addr) {
     // Get the link mode & speed
-    int16_t scsr = eth_phy_read(phy_addr, PHY_SCSR_LAN87XX);
-    return (scsr >> PHY_SCSR_LAN87XX_SPEED_Pos) & PHY_SCSR_LAN87XX_SPEED_Msk;
+    uint16_t scsr = eth_phy_read(phy_addr, PHY_SCSR_LAN87XX);
+    int16_t status = 0;
+    if (scsr & PHY_SCSR_LAN87XX_10M_Msk) {
+        status |= PHY_SPEED_10HALF;
+    }
+    if (scsr & PHY_SCSR_LAN87XX_100M_Msk) {
+        status |= PHY_SPEED_100HALF;
+    }
+    if (scsr & PHY_SCSR_LAN87XX_DUPLEX_Msk) {
+        status |= PHY_DUPLEX;
+    }
+    return status;
 }
 
 int16_t eth_phy_dp838xx_get_link_status(uint32_t phy_addr) {

ports/stm32/eth_phy.h

@@ -50,11 +50,13 @@
 #define PHY_ANAR_SPEED_100FULL  (0x0100)
 #define PHY_ANAR_IEEE802_3      (0x0001)
 
-#define PHY_SPEED_10HALF   (1)
-#define PHY_SPEED_10FULL   (5)
-#define PHY_SPEED_100HALF  (2)
-#define PHY_SPEED_100FULL  (6)
-#define PHY_DUPLEX         (4)
+#define PHY_SPEED_10HALF        (0x01)
+#define PHY_SPEED_100HALF       (0x02)
+#define PHY_SPEED_1000HALF      (0x04)
+#define PHY_DUPLEX              (0x08)
+#define PHY_SPEED_10FULL        (PHY_DUPLEX | PHY_SPEED_10HALF)
+#define PHY_SPEED_100FULL       (PHY_DUPLEX | PHY_SPEED_100HALF)
+#define PHY_SPEED_1000FULL      (PHY_DUPLEX | PHY_SPEED_1000HALF)
 
 uint32_t eth_phy_read(uint32_t phy_addr, uint32_t reg);
 void eth_phy_write(uint32_t phy_addr, uint32_t reg, uint32_t val);