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

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

[Stefano Radaelli]

This patch series adds support for the Variscite DART-MX8M-MINI
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:
 - Remove HDMI from commit message
 - Fixed eth regulator

Stefano Radaelli (3):
  dt-bindings: arm: fsl: add Variscite DART-MX8M-MINI Boards
  arm64: dts: freescale: Add support for Variscite DART-MX8M-MINI
  arm64: dts: imx8mm-var-dart: Add support for Variscite Sonata board

 .../devicetree/bindings/arm/fsl.yaml          |   6 +
 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 .../dts/freescale/imx8mm-var-dart-sonata.dts  | 517 ++++++++++++++++
 .../boot/dts/freescale/imx8mm-var-dart.dtsi   | 558 ++++++++++++++++++
 4 files changed, 1082 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi


base-commit: 23a7098c710673ce8f245af317903ae46325a694
-- 
2.47.3

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

[Stefano Radaelli]

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

Add DT compatible strings for Variscite DART-MX8MM SoM and Variscite
development carrier Board.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
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..c942d3d06469 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -1064,6 +1064,12 @@ properties:
           - const: solidrun,imx8mm-sr-som
           - const: fsl,imx8mm
 
+      - description: Variscite DART-MX8MM based boards
+        items:
+          - const: variscite,var-dart-mx8mm-sonata # Variscite DART-MX8MM on Sonata Development Board
+          - const: variscite,var-dart-mx8mm # Variscite DART-MX8M-MINI SOM
+          - const: fsl,imx8mm
+
       - description: Variscite VAR-SOM-MX8MM based boards
         items:
           - const: variscite,var-som-mx8mm-symphony
-- 
2.47.3

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

[Stefano Radaelli]

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

Add device tree support for the Variscite DART-MX8MM system on module.
This SOM is designed to be used with various carrier boards.

The module includes:
- NXP i.MX8M Mini MPU processor
- Up to 4GB 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-mini/dart-mx8m-mini/
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
---
v1->v2:
 - Fixed eth regulator

 .../boot/dts/freescale/imx8mm-var-dart.dtsi   | 558 ++++++++++++++++++
 1 file changed, 558 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi
new file mode 100644
index 000000000000..2324063f8fd9
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi
@@ -0,0 +1,558 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Common dtsi for Variscite DART-MX8M-MINI
+ *
+ * Link: https://variscite.com/system-on-module-som/i-mx-8/i-mx-8m-mini/dart-mx8m-mini/
+ *
+ * Copyright (C) 2026 Variscite Ltd. - https://www.variscite.com/
+ *
+ */
+
+/dts-v1/;
+
+#include "imx8mm.dtsi"
+
+/ {
+	model = "Variscite DART-MX8M-MINI Module";
+	compatible = "variscite,var-dart-mx8mm", "fsl,imx8mm";
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x0 0x40000000 0 0x80000000>;
+	};
+
+	reg_audio_supply: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "wm8904-supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	reg_eth_phy: regulator-eth-phy {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg_eth_phy>;
+		regulator-name = "eth_phy_pwr";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-enable-ramp-delay = <20000>;
+		gpio = <&gpio1 7 GPIO_ACTIVE_LOW>;
+	};
+
+	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 10 GPIO_ACTIVE_LOW>, /* WIFI_RESET */
+			      <&gpio2 20 GPIO_ACTIVE_LOW>; /* WIFI_PWR_EN */
+	};
+};
+
+&A53_0 {
+	cpu-supply = <&buck2_reg>;
+};
+
+&A53_1 {
+	cpu-supply = <&buck2_reg>;
+};
+
+&A53_2 {
+	cpu-supply = <&buck2_reg>;
+};
+
+&A53_3 {
+	cpu-supply = <&buck2_reg>;
+};
+
+&fec1 {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&pinctrl_fec1>;
+	pinctrl-1 = <&pinctrl_fec1_sleep>;
+	/*
+	 * 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>;
+	phy-supply = <&reg_eth_phy>;
+	status = "okay";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy0: ethernet-phy@0 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <0>;
+			reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+			reset-assert-us = <10000>;
+			reset-deassert-us = <100000>;
+			vddio-supply = <&reg_phy_vddio>;
+		};
+	};
+};
+
+&i2c1 {
+	clock-frequency = <100000>;
+	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";
+
+	pmic@4b {
+		compatible = "rohm,bd71847";
+		reg = <0x4b>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pmic>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
+		rohm,reset-snvs-powered;
+
+		regulators {
+			buck1_reg: BUCK1 {
+				regulator-name = "buck1";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-ramp-delay = <1250>;
+			};
+
+			buck2_reg: BUCK2 {
+				regulator-name = "buck2";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1300000>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-ramp-delay = <1250>;
+				rohm,dvs-run-voltage = <1000000>;
+				rohm,dvs-idle-voltage = <900000>;
+			};
+
+			buck3_reg: BUCK3 {
+				// BUCK5 in datasheet
+				regulator-name = "buck3";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			buck4_reg: BUCK4 {
+				// BUCK6 in datasheet
+				regulator-name = "buck4";
+				regulator-min-microvolt = <2600000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			buck5_reg: BUCK5 {
+				// BUCK7 in datasheet
+				regulator-name = "buck5";
+				regulator-min-microvolt = <1605000>;
+				regulator-max-microvolt = <1995000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			buck6_reg: BUCK6 {
+				// BUCK8 in datasheet
+				regulator-name = "buck6";
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <1400000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo1_reg: LDO1 {
+				regulator-name = "ldo1";
+				regulator-min-microvolt = <1600000>;
+				regulator-max-microvolt = <1900000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo2_reg: LDO2 {
+				regulator-name = "ldo2";
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <900000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo3_reg: LDO3 {
+				regulator-name = "ldo3";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			ldo4_reg: LDO4 {
+				regulator-name = "ldo4";
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+
+			ldo5_reg: LDO5 {
+				regulator-name = "ldo5";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+
+			ldo6_reg: LDO6 {
+				regulator-name = "ldo6";
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+		};
+	};
+};
+
+&i2c3 {
+	clock-frequency = <100000>;
+	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";
+
+	wm8904: audio-codec@1a {
+		compatible = "wlf,wm8904";
+		reg = <0x1a>;
+		#sound-dai-cells = <0>;
+		clocks = <&clk IMX8MM_CLK_SAI3_ROOT>;
+		clock-names = "mclk";
+		AVDD-supply = <&ldo5_reg>;
+		CPVDD-supply = <&ldo5_reg>;
+		DBVDD-supply = <&reg_audio_supply>;
+		DCVDD-supply = <&ldo5_reg>;
+		MICVDD-supply = <&ldo5_reg>;
+		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>;
+	};
+};
+
+&mu {
+	status = "okay";
+};
+
+&sai3 {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai3>;
+	assigned-clocks = <&clk IMX8MM_CLK_SAI3>;
+	assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <1536000>;
+	fsl,sai-mclk-direction-output;
+	status = "okay";
+};
+
+/* BT module */
+&uart4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart4>, <&pinctrl_bt>;
+	assigned-clocks = <&clk IMX8MM_CLK_UART4>;
+	assigned-clock-parents = <&clk IMX8MM_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>;
+	bus-width = <4>;
+	keep-power-in-suspend;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	non-removable;
+	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 = <
+			MX8MM_IOMUXC_SD1_DATA4_GPIO2_IO6		0xc1
+			MX8MM_IOMUXC_SPDIF_EXT_CLK_GPIO5_IO5		0xc1
+		>;
+	};
+
+	pinctrl_fec1: fec1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_ENET_MDC_ENET1_MDC			0x3
+			MX8MM_IOMUXC_ENET_MDIO_ENET1_MDIO		0x3
+			MX8MM_IOMUXC_ENET_TD3_ENET1_RGMII_TD3		0x1f
+			MX8MM_IOMUXC_ENET_TD2_ENET1_RGMII_TD2		0x1f
+			MX8MM_IOMUXC_ENET_TD1_ENET1_RGMII_TD1		0x1f
+			MX8MM_IOMUXC_ENET_TD0_ENET1_RGMII_TD0		0x1f
+			MX8MM_IOMUXC_ENET_RD3_ENET1_RGMII_RD3		0x91
+			MX8MM_IOMUXC_ENET_RD2_ENET1_RGMII_RD2		0x91
+			MX8MM_IOMUXC_ENET_RD1_ENET1_RGMII_RD1		0x91
+			MX8MM_IOMUXC_ENET_RD0_ENET1_RGMII_RD0		0x91
+			MX8MM_IOMUXC_ENET_TXC_ENET1_RGMII_TXC		0x1f
+			MX8MM_IOMUXC_ENET_RXC_ENET1_RGMII_RXC		0x91
+			MX8MM_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL	0x91
+			MX8MM_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL	0x1f
+			MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9		0x19
+		>;
+	};
+
+	pinctrl_fec1_sleep: fec1sleepgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_ENET_MDC_GPIO1_IO16		0x120
+			MX8MM_IOMUXC_ENET_MDIO_GPIO1_IO17		0x120
+			MX8MM_IOMUXC_ENET_TD3_GPIO1_IO18		0x120
+			MX8MM_IOMUXC_ENET_TD2_GPIO1_IO19		0x120
+			MX8MM_IOMUXC_ENET_TD1_GPIO1_IO20		0x120
+			MX8MM_IOMUXC_ENET_TD0_GPIO1_IO21		0x120
+			MX8MM_IOMUXC_ENET_RD3_GPIO1_IO29		0x120
+			MX8MM_IOMUXC_ENET_RD2_GPIO1_IO28		0x120
+			MX8MM_IOMUXC_ENET_RD1_GPIO1_IO27		0x120
+			MX8MM_IOMUXC_ENET_RD0_GPIO1_IO26		0x120
+			MX8MM_IOMUXC_ENET_TXC_GPIO1_IO23		0x120
+			MX8MM_IOMUXC_ENET_RXC_GPIO1_IO25		0x120
+			MX8MM_IOMUXC_ENET_RX_CTL_GPIO1_IO24		0x120
+			MX8MM_IOMUXC_ENET_TX_CTL_GPIO1_IO22		0x120
+			MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9		0x100
+		>;
+	};
+
+	pinctrl_i2c1: i2c1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C1_SCL_I2C1_SCL			0x400001c3
+			MX8MM_IOMUXC_I2C1_SDA_I2C1_SDA			0x400001c3
+		>;
+	};
+
+	pinctrl_i2c1_gpio: i2c1-gpiogrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C1_SCL_GPIO5_IO14		0x400001c3
+			MX8MM_IOMUXC_I2C1_SDA_GPIO5_IO15		0x400001c3
+		>;
+	};
+
+	pinctrl_i2c3: i2c3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C3_SCL_I2C3_SCL			0x400001c3
+			MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA			0x400001c3
+		>;
+	};
+
+	pinctrl_i2c3_gpio: i2c3-gpiogrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C3_SCL_GPIO5_IO18		0x400001c3
+			MX8MM_IOMUXC_I2C3_SDA_GPIO5_IO19		0x400001c3
+		>;
+	};
+
+	pinctrl_pmic: pmicgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD1_DATA6_GPIO2_IO8		0x140
+		>;
+	};
+
+	pinctrl_reg_eth_phy: regeth-phygrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO07_GPIO1_IO7		0x41
+		>;
+	};
+
+	pinctrl_sai3: sai3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI3_RXFS_SAI3_RX_SYNC		0xd6
+			MX8MM_IOMUXC_SAI3_RXC_SAI3_RX_BCLK		0xd6
+			MX8MM_IOMUXC_SAI3_RXD_SAI3_RX_DATA0		0xd6
+			MX8MM_IOMUXC_SAI3_TXFS_SAI3_TX_SYNC		0xd6
+			MX8MM_IOMUXC_SAI3_TXC_SAI3_TX_BCLK		0xd6
+			MX8MM_IOMUXC_SAI3_TXD_SAI3_TX_DATA0		0xd6
+			MX8MM_IOMUXC_SAI3_MCLK_SAI3_MCLK		0xd6
+		>;
+	};
+
+	pinctrl_uart4: uart4grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_ECSPI2_SCLK_UART4_DCE_RX		0x140
+			MX8MM_IOMUXC_ECSPI2_MOSI_UART4_DCE_TX		0x140
+			MX8MM_IOMUXC_ECSPI2_SS0_UART4_DCE_RTS_B		0x140
+			MX8MM_IOMUXC_ECSPI2_MISO_UART4_DCE_CTS_B	0x140
+		>;
+	};
+
+	pinctrl_usdhc1: usdhc1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK			0x190
+			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD			0x1d0
+			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0		0x1d0
+			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1		0x1d0
+			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2		0x1d0
+			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3		0x1d0
+		>;
+	};
+
+	pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK			0x194
+			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD			0x1d4
+			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0		0x1d4
+			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1		0x1d4
+			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2		0x1d4
+			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3		0x1d4
+		>;
+	};
+
+	pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK			0x196
+			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD			0x1d6
+			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0		0x1d6
+			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1		0x1d6
+			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2		0x1d6
+			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3		0x1d6
+		>;
+	};
+
+	pinctrl_usdhc3: usdhc3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_NAND_WE_B_USDHC3_CLK		0x190
+			MX8MM_IOMUXC_NAND_WP_B_USDHC3_CMD		0x1d0
+			MX8MM_IOMUXC_NAND_DATA04_USDHC3_DATA0		0x1d0
+			MX8MM_IOMUXC_NAND_DATA05_USDHC3_DATA1		0x1d0
+			MX8MM_IOMUXC_NAND_DATA06_USDHC3_DATA2		0x1d0
+			MX8MM_IOMUXC_NAND_DATA07_USDHC3_DATA3		0x1d0
+			MX8MM_IOMUXC_NAND_RE_B_USDHC3_DATA4		0x1d0
+			MX8MM_IOMUXC_NAND_CE2_B_USDHC3_DATA5		0x1d0
+			MX8MM_IOMUXC_NAND_CE3_B_USDHC3_DATA6		0x1d0
+			MX8MM_IOMUXC_NAND_CLE_USDHC3_DATA7		0x1d0
+			MX8MM_IOMUXC_NAND_CE1_B_USDHC3_STROBE		0x190
+		>;
+	};
+
+	pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_NAND_WE_B_USDHC3_CLK		0x194
+			MX8MM_IOMUXC_NAND_WP_B_USDHC3_CMD		0x1d4
+			MX8MM_IOMUXC_NAND_DATA04_USDHC3_DATA0		0x1d4
+			MX8MM_IOMUXC_NAND_DATA05_USDHC3_DATA1		0x1d4
+			MX8MM_IOMUXC_NAND_DATA06_USDHC3_DATA2		0x1d4
+			MX8MM_IOMUXC_NAND_DATA07_USDHC3_DATA3		0x1d4
+			MX8MM_IOMUXC_NAND_RE_B_USDHC3_DATA4		0x1d4
+			MX8MM_IOMUXC_NAND_CE2_B_USDHC3_DATA5		0x1d4
+			MX8MM_IOMUXC_NAND_CE3_B_USDHC3_DATA6		0x1d4
+			MX8MM_IOMUXC_NAND_CLE_USDHC3_DATA7		0x1d4
+			MX8MM_IOMUXC_NAND_CE1_B_USDHC3_STROBE		0x194
+		>;
+	};
+
+	pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_NAND_WE_B_USDHC3_CLK		0x196
+			MX8MM_IOMUXC_NAND_WP_B_USDHC3_CMD		0x1d6
+			MX8MM_IOMUXC_NAND_DATA04_USDHC3_DATA0		0x1d6
+			MX8MM_IOMUXC_NAND_DATA05_USDHC3_DATA1		0x1d6
+			MX8MM_IOMUXC_NAND_DATA06_USDHC3_DATA2		0x1d6
+			MX8MM_IOMUXC_NAND_DATA07_USDHC3_DATA3		0x1d6
+			MX8MM_IOMUXC_NAND_RE_B_USDHC3_DATA4		0x1d6
+			MX8MM_IOMUXC_NAND_CE2_B_USDHC3_DATA5		0x1d6
+			MX8MM_IOMUXC_NAND_CE3_B_USDHC3_DATA6		0x1d6
+			MX8MM_IOMUXC_NAND_CLE_USDHC3_DATA7		0x1d6
+			MX8MM_IOMUXC_NAND_CE1_B_USDHC3_STROBE		0x196
+		>;
+	};
+
+	pinctrl_wdog: wdoggrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B		0xc6
+		>;
+	};
+
+	pinctrl_wifi: wifigrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_WP_GPIO2_IO20			0x140
+			MX8MM_IOMUXC_SD1_RESET_B_GPIO2_IO10		0xc1
+		>;
+	};
+};
-- 
2.47.3

[PATCH v2 3/3] arm64: dts: imx8mm-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-MINI system on module.

The Sonata board includes
- uSD Card support
- USB ports and OTG
- Uart, SPI and I2C interfaces
- 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:
 - Remove HDMI from commit message

 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 .../dts/freescale/imx8mm-var-dart-sonata.dts  | 517 ++++++++++++++++++
 2 files changed, 518 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 8ddaab127ab9..694c9aa32779 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -166,6 +166,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-prt8mm.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-tqma8mqml-mba8mx.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-tx8m-1610-moduline-iv-306-d.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-tx8m-1610-moduline-mini-111.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-var-dart-sonata.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-var-som-symphony.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-var-som-symphony-legacy.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw71xx-0x.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts b/arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts
new file mode 100644
index 000000000000..93b0076987b8
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts
@@ -0,0 +1,517 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Variscite Sonata carrier board for DART-MX8M-MINI
+ *
+ * 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 "imx8mm-var-dart.dtsi"
+
+/ {
+	model = "Variscite DART-MX8M-MINI on Sonata-Board";
+	compatible = "variscite,var-dart-mx8mm-sonata",
+		     "variscite,var-dart-mx8mm",
+		     "fsl,imx8mm";
+
+	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";
+		};
+	};
+
+	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>;
+	};
+};
+
+&ecspi1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_ecspi1>;
+	cs-gpios = <&gpio5  9 GPIO_ACTIVE_LOW>,
+		   <&gpio1 12 GPIO_ACTIVE_LOW>;
+	status = "okay";
+
+	/* Resistive touch controller */
+	ads7846: touchscreen@0 {
+		compatible = "ti,ads7846";
+		reg = <0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_restouch>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+		spi-max-frequency = <1500000>;
+		pendown-gpio = <&gpio1 3 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>;
+		clocks = <&clk40m>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
+		microchip,rx-int-gpios = <&gpio5 4 GPIO_ACTIVE_LOW>;
+		spi-max-frequency = <20000000>;
+	};
+};
+
+&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";
+		};
+	};
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+	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>;
+
+		/* 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;
+	};
+
+	extcon_ptn5150: typec@3d {
+		compatible = "nxp,ptn5150";
+		reg = <0x3d>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_extcon>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
+
+		port {
+			typec1_dr_sw: endpoint {
+				remote-endpoint = <&usb1_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;
+	};
+};
+
+&i2c4 {
+	clock-frequency = <100000>;
+	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>;
+	};
+};
+
+&pcie_phy {
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
+	fsl,tx-deemph-gen1 = <0x2d>;
+	fsl,tx-deemph-gen2 = <0xf>;
+	clocks = <&pcie0_refclk>;
+	status = "okay";
+};
+
+&pcie0 {
+	reset-gpios = <&pca6408_2 3 GPIO_ACTIVE_LOW>;
+	clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&pcie0_refclk>,
+		 <&clk IMX8MM_CLK_PCIE1_AUX>;
+	assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>,
+			  <&clk IMX8MM_CLK_PCIE1_CTRL>;
+	assigned-clock-rates = <10000000>, <250000000>;
+	assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>,
+				 <&clk IMX8MM_SYS_PLL2_250M>;
+	status = "okay";
+};
+
+&pwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm>;
+	status = "okay";
+};
+
+&snvs_pwrkey {
+	status = "okay";
+};
+
+&snvs_rtc {
+	status = "disabled";
+};
+
+/* Console */
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1>;
+	wakeup-source;
+	status = "okay";
+};
+
+/* Header */
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	status = "okay";
+};
+
+/* Header */
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart3>;
+	status = "okay";
+};
+
+&usbotg1 {
+	dr_mode = "otg";
+	hnp-disable;
+	srp-disable;
+	adp-disable;
+	usb-role-switch;
+	disable-over-current;
+	samsung,picophy-pre-emp-curr-control = <3>;
+	samsung,picophy-dc-vol-level-adjust = <7>;
+	status = "okay";
+
+	port {
+		usb1_drd_sw: endpoint {
+			remote-endpoint = <&typec1_dr_sw>;
+		};
+	};
+};
+
+&usbotg2 {
+	dr_mode = "host";
+	samsung,picophy-pre-emp-curr-control = <3>;
+	samsung,picophy-dc-vol-level-adjust = <7>;
+	disable-over-current;
+	status = "okay";
+};
+
+/* SD */
+&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>;
+	bus-width = <4>;
+	vmmc-supply = <&reg_usdhc2_vmmc>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_can: cangrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO06_GPIO1_IO6		0x16
+			MX8MM_IOMUXC_SPDIF_RX_GPIO5_IO4			0x16
+		>;
+	};
+
+	pinctrl_captouch: captouchgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO14_GPIO1_IO14		0x16
+		>;
+	};
+
+	pinctrl_ecspi1: ecspi1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK		0x13
+			MX8MM_IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI		0x13
+			MX8MM_IOMUXC_ECSPI1_MISO_ECSPI1_MISO		0x13
+			MX8MM_IOMUXC_ECSPI1_SS0_GPIO5_IO9		0x13
+			MX8MM_IOMUXC_GPIO1_IO12_GPIO1_IO12		0x13
+			MX8MM_IOMUXC_SAI2_RXC_GPIO4_IO22		0x13
+		>;
+	};
+
+	pinctrl_extcon: extcongrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10		0x19
+		>;
+	};
+
+	pinctrl_gpio_leds: ledgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_TXD6_GPIO4_IO18		0x1c6
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C2_SCL_I2C2_SCL			0x400001c3
+			MX8MM_IOMUXC_I2C2_SDA_I2C2_SDA			0x400001c3
+		>;
+	};
+
+	pinctrl_i2c2_gpio: i2c2-gpiogrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C2_SCL_GPIO5_IO16		0x400001c3
+			MX8MM_IOMUXC_I2C2_SDA_GPIO5_IO17		0x400001c3
+		>;
+	};
+
+	pinctrl_i2c4: i2c4grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C4_SCL_I2C4_SCL			0x400001c3
+			MX8MM_IOMUXC_I2C4_SDA_I2C4_SDA			0x400001c3
+		>;
+	};
+
+	pinctrl_i2c4_gpio: i2c4-gpiogrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C4_SCL_GPIO5_IO20		0x400001c3
+			MX8MM_IOMUXC_I2C4_SDA_GPIO5_IO21		0x400001c3
+		>;
+	};
+
+	pinctrl_pca6408: pca6408grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5		0x1c6
+		>;
+	};
+
+	pinctrl_pwm: pwmgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT		0x06
+		>;
+	};
+
+	pinctrl_vmmc_usdhc2: regvmmc-usdhc2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_RESET_B_GPIO2_IO19		0xc1
+		>;
+	};
+
+	pinctrl_restouch: restouchgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3		0x1c0
+		>;
+	};
+
+	pinctrl_rtc: rtcgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15		0x1c1
+		>;
+	};
+
+	pinctrl_uart1: uart1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART1_RXD_UART1_DCE_RX		0x140
+			MX8MM_IOMUXC_UART1_TXD_UART1_DCE_TX		0x140
+		>;
+	};
+
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX		0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX		0x140
+		>;
+	};
+
+	pinctrl_uart3: uart3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART3_RXD_UART3_DCE_RX		0x140
+			MX8MM_IOMUXC_UART3_TXD_UART3_DCE_TX		0x140
+		>;
+	};
+
+	pinctrl_usdhc2: usdhc2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK			0x190
+			MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD			0x1d0
+			MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0		0x1d0
+			MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1		0x1d0
+			MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2		0x1d0
+			MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3		0x1d0
+			MX8MM_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0x1d0
+		>;
+	};
+
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK			0x194
+			MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD			0x1d4
+			MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0		0x1d4
+			MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1		0x1d4
+			MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2		0x1d4
+			MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3		0x1d4
+			MX8MM_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0x1d0
+		>;
+	};
+
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK			0x196
+			MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD			0x1d6
+			MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0		0x1d6
+			MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1		0x1d6
+			MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2		0x1d6
+			MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3		0x1d6
+			MX8MM_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0x1d0
+		>;
+	};
+
+	pinctrl_usdhc2_gpio: usdhc2-gpiogrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12		0xc1
+		>;
+	};
+};
-- 
2.47.3

Re: [PATCH v2 3/3] arm64: dts: imx8mm-var-dart: Add support for Variscite Sonata board

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 3 potential issue(s) to consider:
- [High] The MCP251xFD CAN controller uses an active-low interrupt line that must be configured as level-triggered, but is configured as edge-triggered (`IRQ_TYPE_EDGE_FALLING`).
- [Low] The ads7846 touchscreen node uses deprecated properties.
- [Low] The pinmux `MX8MM_IOMUXC_SAI2_RXC_GPIO4_IO22` is configured as a GPIO in `pinctrl_ecspi1` but `GPIO4_IO22` is never used by `ecspi1` or any of its subnodes.
--

commit bb01573339283cd17f8253331852c339f7a84276
Author: Stefano Radaelli <stefano.r@variscite.com>

arm64: dts: imx8mm-var-dart: Add support for Variscite Sonata board

Add device tree support for the Variscite Sonata carrier board with the
DART-MX8M-MINI system on module. This adds support for peripherals including
uSD Card, USB, UART, SPI, I2C, RTC, TPM, and CAN interfaces.

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

> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts b/arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts
> new file mode 100644
> index 0000000000000..93b0076987b82
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-var-dart-sonata.dts
[ ... ]
> +	/* Resistive touch controller */
> +	ads7846: touchscreen@0 {
> +		compatible = "ti,ads7846";
> +		reg = <0>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_restouch>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
> +		spi-max-frequency = <1500000>;
> +		pendown-gpio = <&gpio1 3 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>;

[Severity: Low]
Are these specific ti,ads7846 properties deprecated in favor of generic
touchscreen properties? Using the standard generic bindings might avoid
device tree validation warnings.

> +		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>;
> +		clocks = <&clk40m>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <6 IRQ_TYPE_EDGE_FALLING>;

[Severity: High]
Does the mcp251xfd CAN controller require a level-triggered interrupt rather
than edge-triggered? If the device holds the INT pin low while internal
interrupts are pending, an edge-triggered setup might miss subsequent
interrupts if the line does not transition high to low again, potentially
stalling CAN communication.

[ ... ]
> +	pinctrl_captouch: captouchgrp {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_GPIO1_IO14_GPIO1_IO14		0x16
> +		>;
> +	};
> +
> +	pinctrl_ecspi1: ecspi1grp {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK		0x13
> +			MX8MM_IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI		0x13
> +			MX8MM_IOMUXC_ECSPI1_MISO_ECSPI1_MISO		0x13
> +			MX8MM_IOMUXC_ECSPI1_SS0_GPIO5_IO9		0x13
> +			MX8MM_IOMUXC_GPIO1_IO12_GPIO1_IO12		0x13
> +			MX8MM_IOMUXC_SAI2_RXC_GPIO4_IO22		0x13

[Severity: Low]
Is MX8MM_IOMUXC_SAI2_RXC_GPIO4_IO22 used by ecspi1 or its subnodes? It
appears to be included in the pinctrl_ecspi1 group without being referenced
by the SPI interface, which could unnecessarily claim the pad or cause
conflicts.

> +		>;
> +	};
[ ... ]

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/cover.1782571383.git.stefano.r@variscite.com?part=3

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

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 3 potential issue(s) to consider:
- [Medium] Simultaneous assertion/deassertion of Wi-Fi power enable and reset pins in `wifi_pwrseq`, violating typical SDIO Wi-Fi power sequencing requirements.
- [Medium] Bluetooth GPIOs configured in `pinctrl_bt` are not assigned to or claimed by the Bluetooth device node, leaving them as unmanaged floating inputs.
- [Medium] WM8904 codec configuration contains contradictory settings blindly copied from binding examples, likely breaking microphone functionality.
--

commit 4642338fef518c3eba73b9681507dd2dd37ee845
Author: Stefano Radaelli <stefano.r@variscite.com>

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

Add device tree support for the Variscite DART-MX8MM system on module.
This SOM is designed to be used with various carrier boards. Only
SOM-specific peripherals are enabled by default.

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

> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi
> new file mode 100644
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi

[ ... ]

> +	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";

[Severity: Medium]
Is this analog microphone routing missing a connection to MICBIAS?

The simple-audio-card,routing property routes the Microphone Jack to the
codec's analog inputs (IN1L/IN1R), but without a connection to the codec's
MICBIAS pin, the analog microphone will likely not receive the required bias
voltage to function.

> +		simple-audio-card,widgets =
> +			"Microphone", "Microphone Jack",
> +			"Headphone", "Headphone Jack",
> +			"Line", "Line In Jack";

[ ... ]

> +	wifi_pwrseq: wifi-pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		post-power-on-delay-ms = <100>;
> +		power-off-delay-us = <10000>;
> +		reset-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>, /* WIFI_RESET */
> +			      <&gpio2 20 GPIO_ACTIVE_LOW>; /* WIFI_PWR_EN */
> +	};

[Severity: Medium]
Does grouping both the power enable and reset pins in this single reset-gpios
array violate SDIO Wi-Fi power sequencing requirements?

The mmc-pwrseq-simple driver toggles all GPIOs in the reset-gpios array
simultaneously. During power-on, the Wi-Fi chip's power enable and reset lines
will be driven high at the exact same moment.

Standard Wi-Fi power sequencing typically requires the power supply to be
fully ramped and stable before the reset line is released.

[ ... ]

> +&i2c3 {
> +	clock-frequency = <100000>;
> +	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";
> +
> +	wm8904: audio-codec@1a {
> +		compatible = "wlf,wm8904";
> +		reg = <0x1a>;

[ ... ]

> +		/* GPIO1 = DMIC_CLK, don't touch others */
> +		wlf,gpio-cfg = <0x0018>, <0xffff>, <0xffff>, <0xffff>;
> +	};
> +};

[Severity: Medium]
Does this digital microphone clock configuration contradict the analog audio
routing defined above?

Configuring GPIO1 as a digital microphone clock appears to be a direct copy
from the wlf,wm8904 binding example, but it contradicts the analog routing for
the Microphone Jack to IN1L/IN1R.

This might expose unintended side-effects by driving a digital clock out of
GPIO1 when it's not needed for an analog microphone setup.

[ ... ]

> +/* BT module */
> +&uart4 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_uart4>, <&pinctrl_bt>;
> +	assigned-clocks = <&clk IMX8MM_CLK_UART4>;
> +	assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_80M>;
> +	uart-has-rtscts;
> +	status = "okay";
> +
> +	bluetooth_iw61x: bluetooth {
> +		compatible = "nxp,88w8987-bt";
> +	};
> +};

[Severity: Medium]
Are the Bluetooth GPIOs defined in pinctrl_bt missing their assignments here?

The pinctrl_bt group defines GPIO2_IO6 and GPIO5_IO5 with floating pad
configurations (0xc1), and the parent uart4 node applies them. However,
because this bluetooth node doesn't map them to expected driver properties
(such as device-wakeup-gpios or host-wakeup-gpios), they are left as
unmanaged floating inputs.

If one of these acts as an enable or reset pin, floating inputs can cause
erratic behavior due to voltage drift.

> +/* 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>;
> +	bus-width = <4>;
> +	keep-power-in-suspend;
> +	mmc-pwrseq = <&wifi_pwrseq>;
> +	non-removable;
> +	status = "okay";
> +};

[Severity: Medium]
Should this node include a vmmc-supply linking to a regulator for the Wi-Fi
power enable?

Modeling WIFI_PWR_EN as a regulator-fixed assigned to vmmc-supply in this
usdhc1 node, while leaving only WIFI_RESET in the mmc-pwrseq-simple node,
would ensure the power sequencing is handled correctly.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/cover.1782571383.git.stefano.r@variscite.com?part=2