drivers: ethernet: phy: add driver for ksz9131

boards/microchip/sam/sama7g54_ek/sama7g54_ek.dts

@@ -149,6 +149,28 @@
 	};
 };
 
+&gmac0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_gmac0_default>;
+	phy-connection-type = "gmii";
+	phy-handle = <&gmac0_phy>;
+};
+
+&gmac0_mdio {
+	status = "okay";
+
+	pinctrl-0 = <&pinctrl_gmac0_mdio_default>;
+	pinctrl-names = "default";
+
+	gmac0_phy: ethernet-phy@7 {
+		compatible = "microchip,ksz9131";
+		status = "okay";
+		reg = <7>;
+		int-gpios = <&pioa 31 GPIO_ACTIVE_LOW>;
+	};
+};
+
 &gmac1 {
 	status = "okay";
 	pinctrl-names = "default";
@@ -182,6 +204,36 @@
 		};
 	};
 
+	pinctrl_gmac0_default: gmac0_default {
+		group1 {
+			pinmux = <PIN_PA16__G0_TX0>,
+				 <PIN_PA17__G0_TX1>,
+				 <PIN_PA26__G0_TX2>,
+				 <PIN_PA27__G0_TX3>,
+				 <PIN_PA19__G0_RX0>,
+				 <PIN_PA20__G0_RX1>,
+				 <PIN_PA28__G0_RX2>,
+				 <PIN_PA29__G0_RX3>,
+				 <PIN_PA15__G0_TXEN>,
+				 <PIN_PA30__G0_RXCK>,
+				 <PIN_PA18__G0_RXDV>,
+				 <PIN_PA25__G0_125CK>;
+			bias-disable;
+		};
+
+		gmac0_txck_default {
+			pinmux = <PIN_PA24__G0_TXCK>;
+			bias-pull-up;
+		};
+	};
+
+	pinctrl_gmac0_mdio_default: gmac0_mdio_default {
+		group1 {
+			pinmux = <PIN_PA22__G0_MDC>,
+				 <PIN_PA23__G0_MDIO>;
+		};
+	};
+
 	pinctrl_gmac1_default: gmac1_default {
 		group1 {
 			pinmux = <PIN_PD30__G1_TXCK>,
@@ -264,7 +316,6 @@
 			bias-pull-up;
 		};
 	};
-
 };
 
 &pit64b0 {

drivers/ethernet/eth_sam_gmac.c

@@ -141,7 +141,17 @@ static inline void dcache_clean(uint32_t addr, uint32_t size)
 #endif
 #endif /* !CONFIG_NET_TEST */
 
-BUILD_ASSERT(DT_INST_ENUM_IDX(0, phy_connection_type) <= 1, "Invalid PHY connection");
+/* if GMAC_UR_MIM_RGMII (new for sama7g5) is defined, the media interface mode
+ * supported are: mii, rmii and gmii. Otherwise mii and rmii are supported.
+ */
+#ifndef GMAC_UR_MIM_RGMII
+#define SAM_GMAC_PHY_CONNECTION_TYPE_MAX 1
+#else
+#define SAM_GMAC_PHY_CONNECTION_TYPE_MAX 2
+#endif
+
+BUILD_ASSERT(DT_INST_ENUM_IDX(0, phy_connection_type) <= SAM_GMAC_PHY_CONNECTION_TYPE_MAX,
+	     "Invalid PHY connection");
 
 /* RX descriptors list */
 static struct gmac_desc rx_desc_que0[MAIN_QUEUE_RX_DESC_COUNT]
@@ -1091,6 +1101,11 @@ static int gmac_init(Gmac *gmac, uint32_t gmac_ncfgr_val)
 	case 1: /* rmii */
 		gmac->GMAC_UR = 0x0;
 		break;
+#ifdef GMAC_UR_MIM_RGMII
+	case 2: /* rgmii */
+		gmac->GMAC_UR = GMAC_UR_MIM_RGMII;
+		break;
+#endif
 	default:
 		/* Build assert at top of file should catch this case */
 		LOG_ERR("The phy connection type is invalid");

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_KSZ9131	phy_microchip_ksz9131.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

@@ -56,6 +56,15 @@ config PHY_MICROCHIP_KSZ8081
 	help
 	  Enable Microchip KSZ8081 Ethernet PHY Driver
 
+config PHY_MICROCHIP_KSZ9131
+	bool "Microchip KSZ9131 PHY Driver"
+	default y
+	depends on DT_HAS_MICROCHIP_KSZ9131_ENABLED
+	select MDIO
+	select GPIO if $(dt_compat_any_has_prop,$(DT_COMPAT_MICROCHIP_KSZ9131),int-gpios)
+	help
+	  Enable Microchip KSZ9131 Ethernet PHY Driver
+
 config PHY_MICROCHIP_VSC8541
 	bool "Microchip VSC8541 PHY Driver"
 	default y