ARM: dts: imx6ul-var-som: add support for EC configuration option (ENET1)

ENET1 is currently disabled and not supported/working on the concerto EVK.
Add support for this optional configuration in a separate dtsi, so that it
can be selectively enabled/disabled.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>

8 files changed, 69 insertions, 54 deletions

diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-common.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-common.dtsi
index af9b92f7709b..70d19eccddb4 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-common.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-common.dtsi
@@ -44,57 +44,7 @@
 	assigned-clock-rates = <786432000>;
 };
 
-&fec1 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_enet1>, <&pinctrl_enet1_gpio>, <&pinctrl_enet1_mdio>;
-	phy-mode = "rmii";
-	phy-handle = <&ethphy0>;
-	status = "okay";
-
-	mdio {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		ethphy0: ethernet-phy@1 {
-			compatible = "ethernet-phy-ieee802.3-c22";
-			reg = <1>;
-			clocks = <&rmii_ref_clk>;
-			clock-names = "rmii-ref";
-			reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
-			reset-assert-us = <100000>;
-			micrel,led-mode = <1>;
-			micrel,rmii-reference-clock-select-25-mhz;
-		};
-	};
-};
-
 &iomuxc {
-	pinctrl_enet1: enet1grp {
-		fsl,pins = <
-			MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN	0x1b0b0
-			MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER	0x1b0b0
-			MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00	0x1b0b0
-			MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01	0x1b0b0
-			MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN	0x1b0b0
-			MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00	0x1b0b0
-			MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01	0x1b0b0
-			MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1	0x4001b031
-		>;
-	};
-
-	pinctrl_enet1_gpio: enet1-gpiogrp {
-		fsl,pins = <
-			MX6UL_PAD_SNVS_TAMPER0__GPIO5_IO00	0x1b0b0 /* fec1 reset */
-		>;
-	};
-
-	pinctrl_enet1_mdio: enet1-mdiogrp {
-		fsl,pins = <
-			MX6UL_PAD_GPIO1_IO06__ENET1_MDIO	0x1b0b0
-			MX6UL_PAD_GPIO1_IO07__ENET1_MDC		0x1b0b0
-		>;
-	};
-
 	pinctrl_i2c1: i2c1grp {
 		fsl,pins = <
 			MX6UL_PAD_CSI_PIXCLK__I2C1_SCL		0x4001b8b0
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi
index fead54ac8c6b..f099ca5d0e8f 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi
@@ -52,10 +52,6 @@
 	status = "okay";
 };
 
-&fec1 {
-	status = "disabled";
-};
-
 &i2c1 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts
index 3905171b47b3..b5e6a3306e1c 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts
@@ -12,6 +12,7 @@
 #include "imx6ul-var-som-concerto-common.dtsi"
 #include "imx6ul-var-som-wifi.dtsi"
 #include "imx6ul-var-som-enet2.dtsi"
+#include "imx6ul-var-som-enet1.dtsi"
 
 / {
 	model = "Variscite VAR-SOM-6UL Concerto Board (6UL CPU)";
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-enet1.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-enet1.dtsi
new file mode 100644
index 000000000000..6b1e34347bec
--- /dev/null
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-enet1.dtsi
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Ethernet ENET1 support for Variscite VAR-SOM-6UL module with
+ * the EC configuration option ((ethernet PHY assembled on SOM).
+ *
+ * Copyright 2019-2024 Variscite Ltd.
+ * Copyright 2026 Dimonoff
+ */
+
+&fec1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_enet1>, <&pinctrl_enet1_gpio>;
+	phy-mode = "rmii";
+	phy-handle = <&ethphy0>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_enet1: enet1grp {
+		fsl,pins = <
+			MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN	0x1b0b0
+			MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER	0x1b0b0
+			MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00	0x1b0b0
+			MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01	0x1b0b0
+			MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN	0x1b0b0
+			MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00	0x1b0b0
+			MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01	0x1b0b0
+			MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1	0x4001b031
+		>;
+	};
+};
+
+&mdio_enet2 {
+	ethphy0: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <1>;
+		clocks = <&rmii_ref_clk>;
+		clock-names = "rmii-ref";
+		reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
+		reset-assert-us = <100000>;
+		micrel,led-mode = <1>;
+		micrel,rmii-reference-clock-select-25-mhz;
+	};
+};
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-enet2.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-enet2.dtsi
index 334ed3bbe02c..b29fcdc079e3 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-enet2.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-enet2.dtsi
@@ -26,6 +26,17 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		ethphy0: ethernet-phy@1 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <1>;
+			clocks = <&rmii_ref_clk>;
+			clock-names = "rmii-ref";
+			reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
+			reset-assert-us = <100000>;
+			micrel,led-mode = <1>;
+			micrel,rmii-reference-clock-select-25-mhz;
+		};
+
 		ethphy1: ethernet-phy@3 {
 			compatible = "ethernet-phy-ieee802.3-c22";
 			reg = <3>;
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi
index b4e6a9316dd8..feea24c0e068 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi
@@ -29,4 +29,10 @@
 			MX6UL_PAD_SNVS_TAMPER6__GPIO5_IO06	0x1b0b0	/* WL_REG_ON (WIFI_EN) */
 		>;
 	};
+
+	pinctrl_enet1_gpio: enet1-gpiogrp {
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER0__GPIO5_IO00	0x1b0b0 /* fec1 reset */
+		>;
+	};
 };
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts
index 89b6032203a2..86f558c76fb3 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts
@@ -12,6 +12,7 @@
 #include "imx6ul-var-som-concerto-common.dtsi"
 #include "imx6ul-var-som-wifi.dtsi"
 #include "imx6ul-var-som-enet2.dtsi"
+#include "imx6ul-var-som-enet1.dtsi"
 
 / {
 	model = "Variscite VAR-SOM-6UL Concerto Board (6ULL CPU)";
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som.dtsi
index 3067ff6a1bc7..f120b1dca75c 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som.dtsi
@@ -27,4 +27,10 @@
 			MX6ULL_PAD_SNVS_TAMPER6__GPIO5_IO06	0x1b0b0	/* WL_REG_ON (WIFI_EN) */
 		>;
 	};
+
+	pinctrl_enet1_gpio: enet1-gpiogrp {
+		fsl,pins = <
+			MX6ULL_PAD_SNVS_TAMPER0__GPIO5_IO00	0x1b0b0 /* fec1 reset */
+		>;
+	};
 };