[PATCH v2 0/3] Add support for Variscite DART-MX8M-PLUS and Sonata board

[PATCH v2 0/3] Add support for Variscite DART-MX8M-PLUS and Sonata board

[Stefano Radaelli]

This patch series adds support for the Variscite DART-MX8M-PLUS
system on module and the Sonata carrier board.

The series includes:
- SOM device tree with on-module peripherals
- Sonata carrier board device tree with board-specific features

The implementation follows the standard SOM + carrier board pattern
where the SOM dtsi contains only peripherals mounted on the module,
while carrier-specific interfaces are enabled in the board dts.

v1->v2:
 - Fixed wrong sai peripheral reference
 - Fixed wrong eqos pinctrl gpio
 - Fixed model name
 - Added new usdhc2 regulator pinctrl
 - Adjusted irq edges

Stefano Radaelli (3):
  dt-bindings: arm: fsl: add Variscite DART-MX8M PLUS Boards
  arm64: dts: freescale: Add support for Variscite DART-MX8M-PLUS
  arm64: dts: imx8mp-var-dart: Add support for Variscite Sonata board

 .../devicetree/bindings/arm/fsl.yaml          |   6 +
 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 .../dts/freescale/imx8mp-var-dart-sonata.dts  | 723 ++++++++++++++++++
 .../boot/dts/freescale/imx8mp-var-dart.dtsi   | 476 ++++++++++++
 4 files changed, 1206 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi


base-commit: be580423d3f84b84a2f549df91e66bc4f54eda02
-- 
2.47.3

[PATCH v2 1/3] dt-bindings: arm: fsl: add Variscite DART-MX8M PLUS Boards

[Stefano Radaelli]

From: Stefano Radaelli <stefano.r@variscite.com>

Add DT compatible strings for Variscite DART-MX8MP SoM and Variscite
development carrier Board.

Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
---
v1->v2:
 - 

 Documentation/devicetree/bindings/arm/fsl.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index 86876311ec59..11629b9eafc5 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -1310,6 +1310,12 @@ properties:
           - const: tq,imx8mp-tqma8mpql            # TQ-Systems GmbH i.MX8MP TQMa8MPQL SOM
           - const: fsl,imx8mp
 
+      - description: Variscite DART-MX8M Plus based boards
+        items:
+          - const: variscite,var-dart-mx8mp-sonata # Variscite DART-MX8MP on Sonata Development Board
+          - const: variscite,var-dart-mx8mp # Variscite DART-MX8MP SOM
+          - const: fsl,imx8mp
+
       - description: Variscite VAR-SOM-MX8M Plus based boards
         items:
           - const: variscite,var-som-mx8mp-symphony
-- 
2.47.3

[PATCH v2 2/3] arm64: dts: freescale: Add support for Variscite DART-MX8M-PLUS

[Stefano Radaelli]

From: Stefano Radaelli <stefano.r@variscite.com>

Add device tree support for the Variscite DART-MX8MP system on module.
This SOM is designed to be used with various carrier boards.

The module includes:
- NXP i.MX8M Plus MPU processor
- Up to 8GB of LPDDR4 memory
- Up to 128GB of eMMC storage memory
- Integrated 10/100/1000 Mbps Ethernet Transceiver
- Codec audio WM8904
- WIFI6 dual-band 802.11ax/ac/a/b/g/n with optional 802.15.4 and Bluetooth

Only SOM-specific peripherals are enabled by default. Carrier board
specific interfaces are left disabled to be enabled in the respective
carrier board device trees.

Link: https://variscite.com/system-on-module-som/i-mx-8/i-mx-8m-plus/dart-mx8m-plus/
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
---
v1->v2:
 - Fixed wrong sai peripheral reference
 - Fixed wrong eqos pinctrl gpio

 .../boot/dts/freescale/imx8mp-var-dart.dtsi   | 476 ++++++++++++++++++
 1 file changed, 476 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi
new file mode 100644
index 000000000000..a4563833ee8e
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi
@@ -0,0 +1,476 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Common dtsi for Variscite DART-MX8M-PLUS
+ *
+ * Link: https://variscite.com/system-on-module-som/i-mx-8/i-mx-8m-plus/dart-mx8m-plus/
+ *
+ * Copyright (C) 2026 Variscite Ltd. - https://www.variscite.com/
+ *
+ */
+
+/dts-v1/;
+
+#include "imx8mp.dtsi"
+
+/ {
+	model = "Variscite DART-MX8M-PLUS Module";
+	compatible = "variscite,var-dart-mx8mp", "fsl,imx8mp";
+
+	reg_audio_supply: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "wm8904-supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	reg_phy_vddio: regulator-phy-vddio {
+		compatible = "regulator-fixed";
+		regulator-name = "vddio-1v8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
+	sound-wm8904 {
+		compatible = "simple-audio-card";
+		simple-audio-card,bitclock-master = <&codec_dai>;
+		simple-audio-card,format = "i2s";
+		simple-audio-card,frame-master = <&codec_dai>;
+		simple-audio-card,mclk-fs = <256>;
+		simple-audio-card,name = "wm8904-audio";
+		simple-audio-card,routing =
+			"Headphone Jack", "HPOUTL",
+			"Headphone Jack", "HPOUTR",
+			"IN2L", "Line In Jack",
+			"IN2R", "Line In Jack",
+			"IN1L", "Microphone Jack",
+			"IN1R", "Microphone Jack";
+		simple-audio-card,widgets =
+			"Microphone", "Microphone Jack",
+			"Headphone", "Headphone Jack",
+			"Line", "Line In Jack";
+
+		codec_dai: simple-audio-card,codec {
+			sound-dai = <&wm8904>;
+		};
+
+		simple-audio-card,cpu {
+			sound-dai = <&sai3>;
+		};
+	};
+
+	wifi_pwrseq: wifi-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		post-power-on-delay-ms = <100>;
+		power-off-delay-us = <10000>;
+		reset-gpios = <&gpio2 7 GPIO_ACTIVE_LOW>, /* WIFI_RESET */
+			      <&gpio2 8 GPIO_ACTIVE_LOW>; /* WIFI_PWR_EN */
+	};
+};
+
+&A53_0 {
+	cpu-supply = <&buck2>;
+};
+
+&A53_1 {
+	cpu-supply = <&buck2>;
+};
+
+&A53_2 {
+	cpu-supply = <&buck2>;
+};
+
+&A53_3 {
+	cpu-supply = <&buck2>;
+};
+
+&eqos {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_eqos>;
+	/*
+	 * The required RGMII TX and RX 2ns delays are implemented directly
+	 * in hardware via passive delay elements on the SOM PCB.
+	 * No delay configuration is needed in software via PHY driver.
+	 */
+	phy-mode = "rgmii";
+	phy-handle = <&ethphy0>;
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy0: ethernet-phy@4 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <4>;
+			reset-gpios = <&gpio2 11 GPIO_ACTIVE_LOW>;
+			reset-assert-us = <10000>;
+			reset-deassert-us = <100000>;
+			vddio-supply = <&reg_phy_vddio>;
+		};
+	};
+};
+
+&i2c1 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c1>;
+	pinctrl-1 = <&pinctrl_i2c1_gpio>;
+	scl-gpios = <&gpio5 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	sda-gpios = <&gpio5 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+
+	wm8904: audio-codec@1a {
+		compatible = "wlf,wm8904";
+		reg = <0x1a>;
+		#sound-dai-cells = <0>;
+		clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1>;
+		clock-names = "mclk";
+		AVDD-supply = <&reg_audio_supply>;
+		CPVDD-supply = <&reg_audio_supply>;
+		DBVDD-supply = <&reg_audio_supply>;
+		DCVDD-supply = <&reg_audio_supply>;
+		MICVDD-supply = <&reg_audio_supply>;
+		wlf,drc-cfg-names = "default", "peaklimiter", "tradition",
+				    "soft", "music";
+		/*
+		 * Config registers per name, respectively:
+		 * KNEE_IP = 0,   KNEE_OP = 0,     HI_COMP = 1,   LO_COMP = 1
+		 * KNEE_IP = -24, KNEE_OP = -6,    HI_COMP = 1/4, LO_COMP = 1
+		 * KNEE_IP = -42, KNEE_OP = -3,    HI_COMP = 0,   LO_COMP = 1
+		 * KNEE_IP = -45, KNEE_OP = -9,    HI_COMP = 1/8, LO_COMP = 1
+		 * KNEE_IP = -30, KNEE_OP = -10.5, HI_COMP = 1/4, LO_COMP = 1
+		 */
+		wlf,drc-cfg-regs = /bits/ 16 <0x01af 0x3248 0x0000 0x0000>,
+				   /bits/ 16 <0x04af 0x324b 0x0010 0x0408>,
+				   /bits/ 16 <0x04af 0x324b 0x0028 0x0704>,
+				   /bits/ 16 <0x04af 0x324b 0x0018 0x078c>,
+				   /bits/ 16 <0x04af 0x324b 0x0010 0x050e>;
+		/* GPIO1 = DMIC_CLK, don't touch others */
+		wlf,gpio-cfg = <0x0018>, <0xffff>, <0xffff>, <0xffff>;
+	};
+
+	pca9450: pmic@25 {
+		compatible = "nxp,pca9450c";
+		reg = <0x25>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pmic>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
+
+		regulators {
+			buck1: BUCK1 {
+				regulator-name = "BUCK1";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <2187500>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-ramp-delay = <3125>;
+			};
+
+			buck2: BUCK2 {
+				regulator-name = "BUCK2";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <2187500>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-ramp-delay = <3125>;
+				nxp,dvs-run-voltage = <950000>;
+				nxp,dvs-standby-voltage = <850000>;
+			};
+
+			buck4: BUCK4 {
+				regulator-name = "BUCK4";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			buck5: BUCK5 {
+				regulator-name = "BUCK5";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			buck6: BUCK6 {
+				regulator-name = "BUCK6";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo1: LDO1 {
+				regulator-name = "LDO1";
+				regulator-min-microvolt = <1600000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo2: LDO2 {
+				regulator-name = "LDO2";
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <1150000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo3: LDO3 {
+				regulator-name = "LDO3";
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo4: LDO4 {
+				regulator-name = "LDO4";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+
+			ldo5: LDO5 {
+				regulator-name = "LDO5";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+			};
+		};
+	};
+};
+
+&mu2 {
+	status = "okay";
+};
+
+&sai3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai3>;
+	assigned-clocks = <&clk IMX8MP_CLK_SAI3>;
+	assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <11536000>;
+	clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_IPG>,
+		<&clk IMX8MP_CLK_DUMMY>,
+		<&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1>,
+		<&clk IMX8MP_CLK_DUMMY>,
+		<&clk IMX8MP_CLK_DUMMY>;
+	clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
+	#sound-dai-cells = <0>;
+	fsl,sai-mclk-direction-output;
+	status = "okay";
+};
+
+/* BT module */
+&uart4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart4>, <&pinctrl_bt>;
+	assigned-clocks = <&clk IMX8MP_CLK_UART4>;
+	assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_80M>;
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth_iw61x: bluetooth {
+		compatible = "nxp,88w8987-bt";
+	};
+};
+
+/* WIFI */
+&usdhc1 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc1>, <&pinctrl_wifi>;
+	pinctrl-1 = <&pinctrl_usdhc1_100mhz>, <&pinctrl_wifi>;
+	pinctrl-2 = <&pinctrl_usdhc1_200mhz>, <&pinctrl_wifi>;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	bus-width = <4>;
+	non-removable;
+	keep-power-in-suspend;
+	status = "okay";
+};
+
+/* eMMC */
+&usdhc3 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc3>;
+	pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
+	pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
+	bus-width = <8>;
+	non-removable;
+	status = "okay";
+};
+
+&wdog1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_wdog>;
+	fsl,ext-reset-output;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_bt: btgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_DATA4__GPIO2_IO06				0xc0
+			MX8MP_IOMUXC_SD1_DATA7__GPIO2_IO09				0xc0
+		>;
+	};
+
+	pinctrl_eqos: eqosgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_ENET_MDC__ENET_QOS_MDC				0x2
+			MX8MP_IOMUXC_ENET_MDIO__ENET_QOS_MDIO				0x2
+			MX8MP_IOMUXC_ENET_RD0__ENET_QOS_RGMII_RD0			0x90
+			MX8MP_IOMUXC_ENET_RD1__ENET_QOS_RGMII_RD1			0x90
+			MX8MP_IOMUXC_ENET_RD2__ENET_QOS_RGMII_RD2			0x90
+			MX8MP_IOMUXC_ENET_RD3__ENET_QOS_RGMII_RD3			0x90
+			MX8MP_IOMUXC_ENET_RXC__CCM_ENET_QOS_CLOCK_GENERATE_RX_CLK	0x90
+			MX8MP_IOMUXC_ENET_RX_CTL__ENET_QOS_RGMII_RX_CTL			0x90
+			MX8MP_IOMUXC_ENET_TD0__ENET_QOS_RGMII_TD0			0x16
+			MX8MP_IOMUXC_ENET_TD1__ENET_QOS_RGMII_TD1			0x16
+			MX8MP_IOMUXC_ENET_TD2__ENET_QOS_RGMII_TD2			0x16
+			MX8MP_IOMUXC_ENET_TD3__ENET_QOS_RGMII_TD3			0x16
+			MX8MP_IOMUXC_ENET_TX_CTL__ENET_QOS_RGMII_TX_CTL			0x16
+			MX8MP_IOMUXC_ENET_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK	0x16
+			MX8MP_IOMUXC_SD2_WP__GPIO2_IO20					0x10
+			MX8MP_IOMUXC_SD1_STROBE__GPIO2_IO11				0x150
+		>;
+	};
+
+	pinctrl_i2c1: i2c1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C1_SCL__I2C1_SCL					0x400001c2
+			MX8MP_IOMUXC_I2C1_SDA__I2C1_SDA					0x400001c2
+		>;
+	};
+
+	pinctrl_i2c1_gpio: i2c1gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C1_SCL__GPIO5_IO14				0x1c2
+			MX8MP_IOMUXC_I2C1_SDA__GPIO5_IO15				0x1c2
+		>;
+	};
+
+	pinctrl_pmic: pmicgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03				0x1c0
+		>;
+	};
+
+	pinctrl_sai3: sai3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI3_TXFS__AUDIOMIX_SAI3_TX_SYNC			0xd6
+			MX8MP_IOMUXC_SAI3_TXC__AUDIOMIX_SAI3_TX_BCLK			0xd6
+			MX8MP_IOMUXC_SAI3_RXD__AUDIOMIX_SAI3_RX_DATA00			0xd6
+			MX8MP_IOMUXC_SAI3_TXD__AUDIOMIX_SAI3_TX_DATA00			0xd6
+			MX8MP_IOMUXC_SAI3_MCLK__AUDIOMIX_SAI3_MCLK			0xd6
+			MX8MP_IOMUXC_SAI3_RXFS__AUDIOMIX_SAI3_RX_SYNC			0xd6
+			MX8MP_IOMUXC_SAI3_RXC__AUDIOMIX_SAI3_RX_BCLK			0xd6
+		>;
+	};
+
+	pinctrl_uart4: uart4grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_ECSPI2_SCLK__UART4_DCE_RX				0x140
+			MX8MP_IOMUXC_ECSPI2_MOSI__UART4_DCE_TX				0x140
+			MX8MP_IOMUXC_ECSPI2_MISO__UART4_DCE_CTS				0x140
+			MX8MP_IOMUXC_ECSPI2_SS0__UART4_DCE_RTS				0x140
+		>;
+	};
+
+	pinctrl_usdhc1: usdhc1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK				0x190
+			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD				0x1d0
+			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0				0x1d0
+			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1				0x1d0
+			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2				0x1d0
+			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3				0x1d0
+		>;
+	};
+
+	pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK				0x194
+			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD				0x1d4
+			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0				0x1d4
+			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1				0x1d4
+			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2				0x1d4
+			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3				0x1d4
+		>;
+	};
+
+	pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK				0x196
+			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD				0x1d6
+			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0				0x1d6
+			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1				0x1d6
+			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2				0x1d6
+			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3				0x1d6
+		>;
+	};
+
+	pinctrl_usdhc3: usdhc3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK				0x190
+			MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD				0x1d0
+			MX8MP_IOMUXC_NAND_DATA04__USDHC3_DATA0				0x1d0
+			MX8MP_IOMUXC_NAND_DATA05__USDHC3_DATA1				0x1d0
+			MX8MP_IOMUXC_NAND_DATA06__USDHC3_DATA2				0x1d0
+			MX8MP_IOMUXC_NAND_DATA07__USDHC3_DATA3				0x1d0
+			MX8MP_IOMUXC_NAND_RE_B__USDHC3_DATA4				0x1d0
+			MX8MP_IOMUXC_NAND_CE2_B__USDHC3_DATA5				0x1d0
+			MX8MP_IOMUXC_NAND_CE3_B__USDHC3_DATA6				0x1d0
+			MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7				0x1d0
+			MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE				0x190
+		>;
+	};
+
+	pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK				0x194
+			MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD				0x1d4
+			MX8MP_IOMUXC_NAND_DATA04__USDHC3_DATA0				0x1d4
+			MX8MP_IOMUXC_NAND_DATA05__USDHC3_DATA1				0x1d4
+			MX8MP_IOMUXC_NAND_DATA06__USDHC3_DATA2				0x1d4
+			MX8MP_IOMUXC_NAND_DATA07__USDHC3_DATA3				0x1d4
+			MX8MP_IOMUXC_NAND_RE_B__USDHC3_DATA4				0x1d4
+			MX8MP_IOMUXC_NAND_CE2_B__USDHC3_DATA5				0x1d4
+			MX8MP_IOMUXC_NAND_CE3_B__USDHC3_DATA6				0x1d4
+			MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7				0x1d4
+			MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE				0x194
+		>;
+	};
+
+	pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK				0x196
+			MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD				0x1d6
+			MX8MP_IOMUXC_NAND_DATA04__USDHC3_DATA0				0x1d6
+			MX8MP_IOMUXC_NAND_DATA05__USDHC3_DATA1				0x1d6
+			MX8MP_IOMUXC_NAND_DATA06__USDHC3_DATA2				0x1d6
+			MX8MP_IOMUXC_NAND_DATA07__USDHC3_DATA3				0x1d6
+			MX8MP_IOMUXC_NAND_RE_B__USDHC3_DATA4				0x1d6
+			MX8MP_IOMUXC_NAND_CE2_B__USDHC3_DATA5				0x1d6
+			MX8MP_IOMUXC_NAND_CE3_B__USDHC3_DATA6				0x1d6
+			MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7				0x1d6
+			MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE				0x196
+		>;
+	};
+
+	pinctrl_wdog: wdoggrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO02__WDOG1_WDOG_B				0xc6
+		>;
+	};
+
+	pinctrl_wifi: wifigrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_DATA5__GPIO2_IO07				0xc0
+			MX8MP_IOMUXC_SD1_DATA6__GPIO2_IO08				0xc0
+		>;
+	};
+};
-- 
2.47.3

Re: [PATCH v2 2/3] arm64: dts: freescale: Add support for Variscite DART-MX8M-PLUS

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Medium] Orphaned pin configuration in `pinctrl_eqos` causes a pinctrl conflict, and missing PHY interrupt configuration.
--

commit 073a9021771cdebbb374385137ac2962db9362f2
Author: Stefano Radaelli <stefano.r@variscite.com>

arm64: dts: freescale: Add support for Variscite DART-MX8M-PLUS

Add device tree support for the Variscite DART-MX8MP system on module.
This SOM is designed to be used with various carrier boards.

Link: https://variscite.com/system-on-module-som/i-mx-8/i-mx-8m-plus/dart-mx8m-plus/

> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi
> new file mode 100644
> index 0000000000000..a4563833ee8e0
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi

[ ... ]

> +	mdio {
> +		compatible = "snps,dwmac-mdio";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		ethphy0: ethernet-phy@4 {
> +			compatible = "ethernet-phy-ieee802.3-c22";
> +			reg = <4>;
> +			reset-gpios = <&gpio2 11 GPIO_ACTIVE_LOW>;
> +			reset-assert-us = <10000>;
> +			reset-deassert-us = <100000>;
> +			vddio-supply = <&reg_phy_vddio>;
> +		};

[Severity: Medium]
Does this PHY configuration omit the interrupt configuration?

Without the interrupt-parent and interrupts properties, will the kernel fall
back to CPU-intensive polling instead of interrupt-driven operation?

> +	};
> +};

[ ... ]

> +	pinctrl_eqos: eqosgrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_ENET_MDC__ENET_QOS_MDC				0x2
> +			MX8MP_IOMUXC_ENET_MDIO__ENET_QOS_MDIO				0x2

[ ... ]

> +			MX8MP_IOMUXC_ENET_TX_CTL__ENET_QOS_RGMII_TX_CTL			0x16
> +			MX8MP_IOMUXC_ENET_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK	0x16
> +			MX8MP_IOMUXC_SD2_WP__GPIO2_IO20					0x10

[Severity: Medium]
Is this pin erroneously claimed by the ethernet node?

This pin does not appear to be consumed by the Ethernet MAC or PHY in this
file. If a custom carrier board attempts to use SD2_WP for its standard
purpose or as a GPIO, will it fail with an -EBUSY pinctrl conflict because it
is locked here?

If this pin was originally intended to act as the PHY interrupt line, should
it be configured in the ethphy0 node instead?

> +			MX8MP_IOMUXC_SD1_STROBE__GPIO2_IO11				0x150
> +		>;
> +	};

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/cover.1780912513.git.stefano.r@variscite.com?part=2

[PATCH v2 3/3] arm64: dts: imx8mp-var-dart: Add support for Variscite Sonata board

[Stefano Radaelli]

From: Stefano Radaelli <stefano.r@variscite.com>

Add device tree support for the Variscite Sonata carrier board with the
DART-MX8M-PLUS system on module.

The Sonata board includes
- uSD Card support
- USB ports and OTG
- Additional Gigabit Ethernet interface
- Uart, SPI and I2C interfaces
- HDMI support
- GPIO Expanders
- RTC module
- TPM module
- CAN peripherals

Link: https://variscite.com/carrier-boards/sonata-board/
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
---
v1->v2:
 - Fixed model name
 - Added new usdhc2 regulator pinctrl
 - Adjusted irq edges

 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 .../dts/freescale/imx8mp-var-dart-sonata.dts  | 723 ++++++++++++++++++
 2 files changed, 724 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 03988f0eae30..818e57f54475 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -448,6 +448,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-tx8p-ml81-moduline-display-106-av101hdt-a10.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-tx8p-ml81-moduline-display-106-av123z7m-n17.dtb
 
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-ultra-mach-sbc.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-var-dart-sonata.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-var-som-symphony.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw71xx-2x.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw72xx-2x.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts b/arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts
new file mode 100644
index 000000000000..8afd72820f39
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts
@@ -0,0 +1,723 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Variscite Sonata carrier board for DART-MX8M-PLUS
+ *
+ * Link: https://variscite.com/carrier-boards/sonata-board/
+ *
+ * Copyright (C) 2026 Variscite Ltd. - https://www.variscite.com/
+ *
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/phy/phy-imx8-pcie.h>
+#include "imx8mp-var-dart.dtsi"
+
+/ {
+	model = "Variscite DART-MX8M-PLUS on Sonata-Board";
+	compatible = "variscite,var-dart-mx8mp-sonata",
+		     "variscite,var-dart-mx8mp",
+		     "fsl,imx8mp";
+
+	chosen {
+		stdout-path = &uart1;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		button-home {
+			label = "Home";
+			linux,code = <KEY_HOME>;
+			gpios = <&pca6408_1 4 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+
+		button-up {
+			label = "Up";
+			linux,code = <KEY_UP>;
+			gpios = <&pca6408_1 5 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+
+		button-down {
+			label = "Down";
+			linux,code = <KEY_DOWN>;
+			gpios = <&pca6408_1 6 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+
+		button-back {
+			label = "Back";
+			linux,code = <KEY_BACK>;
+			gpios = <&pca6408_1 7 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_leds>;
+
+		led-emmc {
+			gpios = <&gpio4 18 GPIO_ACTIVE_HIGH>;
+			label = "eMMC";
+			linux,default-trigger = "mmc2";
+		};
+	};
+
+	native-hdmi-connector {
+		compatible = "hdmi-connector";
+		label = "HDMI OUT";
+		type = "a";
+
+		port {
+			hdmi_in: endpoint {
+				remote-endpoint = <&hdmi_tx_out>;
+			};
+		};
+	};
+
+	clk40m: oscillator {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <40000000>;
+		clock-output-names = "can_osc";
+	};
+
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
+	reg_usdhc2_vmmc: regulator-vmmc-usdhc2 {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_vmmc_usdhc2>;
+		regulator-name = "VSD_3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		startup-delay-us = <100>;
+		off-on-delay-us = <12000>;
+	};
+
+	sound-hdmi {
+		compatible = "fsl,imx-audio-hdmi";
+		model = "audio-hdmi";
+		audio-cpu = <&aud2htx>;
+		hdmi-out;
+	};
+
+	sound-xcvr {
+		compatible = "fsl,imx-audio-card";
+		model = "imx-audio-xcvr";
+
+		pri-dai-link {
+			link-name = "XCVR PCM";
+
+			cpu {
+				sound-dai = <&xcvr>;
+			};
+		};
+	};
+};
+
+&aud2htx {
+	status = "okay";
+};
+
+&pwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm1>;
+	status = "okay";
+};
+
+&ecspi1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_ecspi1>;
+	cs-gpios = <&gpio5  9 GPIO_ACTIVE_LOW>,
+		   <&gpio1 12 GPIO_ACTIVE_LOW>;
+	status = "okay";
+
+	ads7846: touchscreen@0 {
+		compatible = "ti,ads7846";
+		reg = <0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_restouch>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+		spi-max-frequency = <1500000>;
+		pendown-gpio = <&gpio1 7 GPIO_ACTIVE_LOW>;
+		ti,x-min = /bits/ 16 <125>;
+		ti,x-max = /bits/ 16 <4008>;
+		ti,y-min = /bits/ 16 <282>;
+		ti,y-max = /bits/ 16 <3864>;
+		ti,x-plate-ohms = /bits/ 16 <180>;
+		ti,pressure-max = /bits/ 16 <255>;
+		ti,debounce-max = /bits/ 16 <10>;
+		ti,debounce-tol = /bits/ 16 <3>;
+		ti,debounce-rep = /bits/ 16 <1>;
+		ti,settle-delay-usec = /bits/ 16 <150>;
+		ti,keep-vref-on;
+		wakeup-source;
+	};
+
+	can0: can@1 {
+		compatible = "microchip,mcp251xfd";
+		reg = <1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_can>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
+		microchip,rx-int-gpios = <&gpio5 4 GPIO_ACTIVE_LOW>;
+		clocks = <&clk40m>;
+		spi-max-frequency = <20000000>;
+	};
+};
+
+&eqos {
+	mdio {
+		ethphy1: ethernet-phy@1 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <1>;
+			reset-gpios = <&pca6408_2 0 GPIO_ACTIVE_LOW>;
+			reset-assert-us = <10000>;
+			reset-deassert-us = <20000>;
+			vddio-supply = <&reg_phy_vddio>;
+
+			leds {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				led@0 {
+					reg = <0>;
+					color = <LED_COLOR_ID_YELLOW>;
+					function = LED_FUNCTION_LAN;
+					linux,default-trigger = "netdev";
+				};
+
+				led@1 {
+					reg = <1>;
+					color = <LED_COLOR_ID_GREEN>;
+					function = LED_FUNCTION_LAN;
+					linux,default-trigger = "netdev";
+				};
+			};
+		};
+	};
+};
+
+&ethphy0 {
+	leds {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		led@0 {
+			reg = <0>;
+			color = <LED_COLOR_ID_YELLOW>;
+			function = LED_FUNCTION_LAN;
+			linux,default-trigger = "netdev";
+		};
+
+		led@1 {
+			reg = <1>;
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_LAN;
+			linux,default-trigger = "netdev";
+		};
+	};
+};
+
+&fec {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_fec>;
+	/*
+	 * The required RGMII TX and RX 2ns delays are implemented directly
+	 * in hardware via passive delay elements on the SOM PCB.
+	 * No delay configuration is needed in software via PHY driver.
+	 */
+	phy-mode = "rgmii";
+	phy-handle = <&ethphy1>;
+	status = "okay";
+};
+
+&flexcan1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan1>;
+	status = "okay";
+};
+
+&flexcan2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan2>;
+	status = "okay";
+};
+
+&hdmi_pai {
+	status = "okay";
+};
+
+&hdmi_pvi {
+	status = "okay";
+};
+
+&hdmi_tx {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hdmi>;
+	status = "okay";
+
+	ports {
+		port@1 {
+			hdmi_tx_out: endpoint {
+				remote-endpoint = <&hdmi_in>;
+			};
+		};
+	};
+};
+
+&hdmi_tx_phy {
+	status = "okay";
+};
+
+&i2c2 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	pinctrl-1 = <&pinctrl_i2c2_gpio>;
+	scl-gpios = <&gpio5 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	sda-gpios = <&gpio5 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+
+	pca9534: gpio@22 {
+		compatible = "nxp,pca9534";
+		reg = <0x22>;
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		eth10g-en-hog {
+			gpio-hog;
+			gpios = <5 GPIO_ACTIVE_HIGH>;
+			output-low;
+			line-name = "eth10g_sel";
+		};
+
+		pcie2-en-hog {
+			gpio-hog;
+			gpios = <6 GPIO_ACTIVE_HIGH>;
+			output-high;
+			line-name = "pcie2_sel";
+		};
+
+		/* RGB_SEL */
+		lvds-brg-enable-hog {
+			gpio-hog;
+			gpios = <7 GPIO_ACTIVE_HIGH>;
+			output-low;
+			line-name = "rgb_sel";
+		};
+	};
+
+	/* Capacitive touch controller */
+	ft5x06_ts: touchscreen@38 {
+		compatible = "edt,edt-ft5206";
+		reg = <0x38>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_captouch>;
+		reset-gpios = <&pca6408_2 4 GPIO_ACTIVE_LOW>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <14 IRQ_TYPE_EDGE_FALLING>;
+		touchscreen-size-x = <800>;
+		touchscreen-size-y = <480>;
+		touchscreen-inverted-x;
+		touchscreen-inverted-y;
+		wakeup-source;
+	};
+
+	typec@3d {
+		compatible = "nxp,ptn5150";
+		reg = <0x3d>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_extcon>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
+
+		port {
+			typec_dr_sw: endpoint {
+				remote-endpoint = <&usb3_drd_sw>;
+			};
+		};
+	};
+
+	rtc@68 {
+		compatible = "dallas,ds1337";
+		reg = <0x68>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_rtc>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <15 IRQ_TYPE_EDGE_FALLING>;
+		wakeup-source;
+	};
+};
+
+&i2c3 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c3>;
+	pinctrl-1 = <&pinctrl_i2c3_gpio>;
+	scl-gpios = <&gpio5 18 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	sda-gpios = <&gpio5 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+};
+
+&i2c4 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c4>;
+	pinctrl-1 = <&pinctrl_i2c4_gpio>;
+	scl-gpios = <&gpio5 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	sda-gpios = <&gpio5 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+
+	pca6408_1: gpio@20 {
+		compatible = "nxp,pcal6408";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pca6408>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	pca6408_2: gpio@21 {
+		compatible = "nxp,pcal6408";
+		reg = <0x21>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	st33ktpm2xi2c: tpm@2e {
+		compatible = "st,st33ktpm2xi2c", "tcg,tpm-tis-i2c";
+		reg = <0x2e>;
+		label = "tpm";
+		reset-gpios = <&pca9534 0 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&lcdif3 {
+	status = "okay";
+};
+
+&pcie {
+	reset-gpios = <&pca6408_2 3 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
+&pcie_phy {
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
+	clocks = <&pcie0_refclk>;
+	clock-names = "ref";
+	status = "okay";
+};
+
+/* Console */
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1>;
+	status = "okay";
+};
+
+/* Header */
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	status = "okay";
+};
+
+/* Header */
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart3>;
+	status = "okay";
+};
+
+&usb3_0 {
+	status = "okay";
+};
+
+&usb3_1 {
+	status = "okay";
+};
+
+&usb_dwc3_0 {
+	dr_mode = "otg";
+	hnp-disable;
+	srp-disable;
+	adp-disable;
+	usb-role-switch;
+	snps,dis-u1-entry-quirk;
+	snps,dis-u2-entry-quirk;
+	status = "okay";
+
+	port {
+		usb3_drd_sw: endpoint {
+			remote-endpoint = <&typec_dr_sw>;
+		};
+	};
+};
+
+&usb_dwc3_1 {
+	dr_mode = "host";
+	status = "okay";
+};
+
+&usb3_phy0 {
+	fsl,phy-tx-vref-tune-percent = <122>;
+	fsl,phy-tx-preemp-amp-tune-microamp = <1800>;
+	fsl,phy-tx-vboost-level-microvolt = <1156>;
+	fsl,phy-comp-dis-tune-percent = <115>;
+	fsl,phy-pcs-tx-deemph-3p5db-attenuation-db = <33>;
+	fsl,phy-pcs-tx-swing-full-percent = <100>;
+	status = "okay";
+};
+
+&usb3_phy1 {
+	fsl,phy-tx-preemp-amp-tune-microamp = <1800>;
+	fsl,phy-tx-vref-tune-percent = <116>;
+	status = "okay";
+};
+
+&usdhc2 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;
+	pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;
+	pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
+	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
+	vmmc-supply = <&reg_usdhc2_vmmc>;
+	bus-width = <4>;
+	status = "okay";
+};
+
+&xcvr {
+	#sound-dai-cells = <0>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_can: cangrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO06__GPIO1_IO06		0x1c6
+			MX8MP_IOMUXC_SPDIF_RX__GPIO5_IO04		0x16
+		>;
+	};
+
+	pinctrl_captouch: captouchgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO14__GPIO1_IO14		0x16
+		>;
+	};
+
+	pinctrl_ecspi1: ecspi1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_ECSPI1_SCLK__ECSPI1_SCLK		0x12
+			MX8MP_IOMUXC_ECSPI1_MOSI__ECSPI1_MOSI		0x12
+			MX8MP_IOMUXC_ECSPI1_MISO__ECSPI1_MISO		0x12
+			MX8MP_IOMUXC_ECSPI1_SS0__GPIO5_IO09		0x12
+			MX8MP_IOMUXC_GPIO1_IO12__GPIO1_IO12		0x12
+		>;
+	};
+
+	pinctrl_extcon: extcongrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO10__GPIO1_IO10		0x10
+		>;
+	};
+
+	pinctrl_fec: fecgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI1_RXD4__ENET1_RGMII_RD0		0x90
+			MX8MP_IOMUXC_SAI1_RXD5__ENET1_RGMII_RD1		0x90
+			MX8MP_IOMUXC_SAI1_RXD6__ENET1_RGMII_RD2		0x90
+			MX8MP_IOMUXC_SAI1_RXD7__ENET1_RGMII_RD3		0x1d0
+			MX8MP_IOMUXC_SAI1_TXC__ENET1_RGMII_RXC		0x90
+			MX8MP_IOMUXC_SAI1_TXFS__ENET1_RGMII_RX_CTL	0x90
+			MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0		0x00
+			MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1		0x00
+			MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2		0x00
+			MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3		0x00
+			MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL	0x00
+			MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC		0x00
+		>;
+	};
+
+	pinctrl_flexcan1: flexcan1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_RXC__CAN1_TX			0x154
+			MX8MP_IOMUXC_SAI2_TXC__CAN1_RX			0x154
+		>;
+	};
+
+	pinctrl_flexcan2: flexcan2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_MCLK__CAN2_RX			0x154
+			MX8MP_IOMUXC_SAI2_TXD0__CAN2_TX			0x154
+		>;
+	};
+
+	pinctrl_gpio_leds: ledgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI1_TXD6__GPIO4_IO18		0xc6
+		>;
+	};
+
+	pinctrl_hdmi: hdmigrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_HDMI_DDC_SCL__HDMIMIX_HDMI_SCL	0x1c2
+			MX8MP_IOMUXC_HDMI_DDC_SDA__HDMIMIX_HDMI_SDA	0x1c2
+			MX8MP_IOMUXC_HDMI_CEC__HDMIMIX_HDMI_CEC		0x10
+			MX8MP_IOMUXC_HDMI_HPD__HDMIMIX_HDMI_HPD		0x10
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C2_SCL__I2C2_SCL			0x400001c2
+			MX8MP_IOMUXC_I2C2_SDA__I2C2_SDA			0x400001c2
+		>;
+	};
+
+	pinctrl_i2c2_gpio: i2c2gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C2_SCL__GPIO5_IO16		0x1c2
+			MX8MP_IOMUXC_I2C2_SDA__GPIO5_IO17		0x1c2
+		>;
+	};
+
+	pinctrl_i2c3: i2c3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C3_SCL__I2C3_SCL			0x400001c2
+			MX8MP_IOMUXC_I2C3_SDA__I2C3_SDA			0x400001c2
+		>;
+	};
+
+	pinctrl_i2c3_gpio: i2c3gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C3_SCL__GPIO5_IO18		0x1c2
+			MX8MP_IOMUXC_I2C3_SDA__GPIO5_IO19		0x1c2
+		>;
+	};
+
+	pinctrl_i2c4: i2c4grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C4_SCL__I2C4_SCL			0x400001c2
+			MX8MP_IOMUXC_I2C4_SDA__I2C4_SDA			0x400001c2
+		>;
+	};
+
+	pinctrl_i2c4_gpio: i2c4gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C4_SCL__GPIO5_IO20		0x1c2
+			MX8MP_IOMUXC_I2C4_SDA__GPIO5_IO21		0x1c2
+		>;
+	};
+
+	pinctrl_pca6408: pca6408grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO05__GPIO1_IO05		0x1c6
+		>;
+	};
+
+	pinctrl_pwm1: pwm1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO01__PWM1_OUT		0x116
+		>;
+	};
+
+	pinctrl_restouch: restouchgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO07__GPIO1_IO07		0xc0
+		>;
+	};
+
+	pinctrl_rtc: rtcgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO15__GPIO1_IO15		0x1c0
+		>;
+	};
+
+	pinctrl_uart1: uart1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_UART1_RXD__UART1_DCE_RX		0x40
+			MX8MP_IOMUXC_UART1_TXD__UART1_DCE_TX		0x40
+		>;
+	};
+
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_UART2_RXD__UART2_DCE_RX		0x40
+			MX8MP_IOMUXC_UART2_TXD__UART2_DCE_TX		0x40
+		>;
+	};
+
+	pinctrl_uart3: uart3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_UART3_RXD__UART3_DCE_RX		0x40
+			MX8MP_IOMUXC_UART3_TXD__UART3_DCE_TX		0x40
+		>;
+	};
+
+	pinctrl_usdhc2: usdhc2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK		0x190
+			MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD		0x1d0
+			MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0		0x1d0
+			MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1		0x1d0
+			MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2		0x1d0
+			MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3		0x1d0
+			MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT		0xc0
+		>;
+	};
+
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK		0x194
+			MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD		0x1d4
+			MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0		0x1d4
+			MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1		0x1d4
+			MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2		0x1d4
+			MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3		0x1d4
+			MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT		0xc0
+		>;
+	};
+
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK		0x196
+			MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD		0x1d6
+			MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0		0x1d6
+			MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1		0x1d6
+			MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2		0x1d6
+			MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3		0x1d6
+			MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT		0xc0
+		>;
+	};
+
+	pinctrl_vmmc_usdhc2: regvmmc-usdhc2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19		0x40
+		>;
+	};
+
+	pinctrl_usdhc2_gpio: usdhc2-gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CD_B__GPIO2_IO12		0x1c4
+		>;
+	};
+};
-- 
2.47.3

Re: [PATCH v2 3/3] arm64: dts: imx8mp-var-dart: Add support for Variscite Sonata board

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [High] RGMII TX pins are configured with minimum drive strength and slow slew rate.
--

commit bdd50106871edf46aec2e0d2dd1a6553b8d8c5ed
Author: Stefano Radaelli <stefano.r@variscite.com>
arm64: dts: imx8mp-var-dart: Add support for Variscite Sonata board

This commit adds device tree support for the Variscite Sonata carrier board
equipped with the DART-MX8M-PLUS system on module. It defines nodes and
pinmux configurations for interfaces including Ethernet, USB, HDMI, and I2C
peripherals.

Link: https://variscite.com/carrier-boards/sonata-board/

> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts b/arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts
> new file mode 100644
> index 0000000000000..8afd72820f390
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-var-dart-sonata.dts

[ ... ]

> +	pinctrl_fec: fecgrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SAI1_RXD4__ENET1_RGMII_RD0		0x90
> +			MX8MP_IOMUXC_SAI1_RXD5__ENET1_RGMII_RD1		0x90
> +			MX8MP_IOMUXC_SAI1_RXD6__ENET1_RGMII_RD2		0x90
> +			MX8MP_IOMUXC_SAI1_RXD7__ENET1_RGMII_RD3		0x1d0
> +			MX8MP_IOMUXC_SAI1_TXC__ENET1_RGMII_RXC		0x90
> +			MX8MP_IOMUXC_SAI1_TXFS__ENET1_RGMII_RX_CTL	0x90
> +			MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0		0x00
> +			MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1		0x00
> +			MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2		0x00
> +			MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3		0x00
> +			MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL	0x00
> +			MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC		0x00

[Severity: High]
Will setting the pad values for the RGMII transmit pins to 0x00 cause signal
integrity problems?

A pad value of 0x00 sets the Drive Strength Enable (DSE) to its lowest setting
(X1) and the Fast Slew Rate (FSEL) to slow. RGMII operates at 125 MHz for
Gigabit Ethernet, which physically requires fast slew rates and higher drive
strength (typically 0x16 or 0x1f on i.MX devices) to maintain signal integrity.

Could these slow signal edges lead to CRC errors, link instability, or a
complete failure to establish a gigabit link under load?

> +		>;
> +	};

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/cover.1780912513.git.stefano.r@variscite.com?part=3