ethernet: stm32: add MII mode

Add MII mode for STM32 Ethernet in Kconfig. Default is still RMII.

Signed-off-by: Alexander Polleti <[email protected]>

Author: metapsychologe

drivers/ethernet/Kconfig.stm32_hal

@@ -79,5 +79,11 @@ config ETH_STM32_HAL_MAC5
 	  This is the byte 5 of the MAC address.
 endif
 
+config ETH_STM32_HAL_MII
+	bool "Use MII interface"
+	depends on ETH_STM32_HAL
+	help
+	  Use the MII physical interface instead of RMII.
+
 endif # ETH_STM32_HAL
 

drivers/ethernet/eth_stm32_hal.c

@@ -421,7 +421,11 @@ static struct eth_stm32_hal_dev_data eth0_data = {
 			.PhyAddress = CONFIG_ETH_STM32_HAL_PHY_ADDRESS,
 			.RxMode = ETH_RXINTERRUPT_MODE,
 			.ChecksumMode = ETH_CHECKSUM_BY_SOFTWARE,
+#if defined(CONFIG_ETH_STM32_HAL_MII)
+			.MediaInterface = ETH_MEDIA_INTERFACE_MII,
+#else
 			.MediaInterface = ETH_MEDIA_INTERFACE_RMII,
+#endif
 		},
 	},
 	.mac_addr = {