drivers: ethernet: add initial support of the LAN8742 PHY

Add basic support of the LAN8742 RMII phy. The driver is inspired
from the phy_mii generic driver, with the support of a GPIO reset.

Signed-off-by: Arnaud Pouliquen <[email protected]>

Author: arnopo

drivers/ethernet/phy/CMakeLists.txt

@@ -6,6 +6,7 @@ zephyr_library_sources_ifdef(CONFIG_PHY_GENERIC_MII	phy_mii.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_ADIN2111	phy_adin2111.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_DM8806	phy_dm8806.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_MICROCHIP_KSZ8081	phy_microchip_ksz8081.c)
+zephyr_library_sources_ifdef(CONFIG_PHY_MICROCHIP_LAN8742 phy_microchip_lan8742.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_MICROCHIP_T1S phy_microchip_t1s.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_MICROCHIP_VSC8541 phy_microchip_vsc8541.c)
 zephyr_library_sources_ifdef(CONFIG_PHY_OA_TC14_PLCA_LIB phy_oa_tc14_plca.c)

drivers/ethernet/phy/Kconfig

@@ -55,6 +55,15 @@ config PHY_MICROCHIP_KSZ8081
 	help
 	  Enable Microchip KSZ8081 Ethernet PHY Driver
 
+config PHY_MICROCHIP_LAN8742
+	bool "Microchip LAN8742 PHY Driver"
+	default y
+	depends on DT_HAS_MICROCHIP_LAN8742_ENABLED
+	select MDIO
+	select GPIO if ($(dt_compat_any_has_prop,$(DT_COMPAT_MICROCHIP_LAN8742),reset-gpios))
+	help
+	  Enable Microchip LAN8742 Ethernet PHY Driver
+
 config PHY_MICROCHIP_VSC8541
 	bool "Microchip VSC8541 PHY Driver"
 	default y