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Message-ID: <aYOil4idKr4xCtoe@lizhi-Precision-Tower-5810>
Date: Wed, 4 Feb 2026 14:48:39 -0500
From: Frank Li <Frank.li@....com>
To: Stefano Radaelli <stefano.radaelli21@...il.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, kernel@...gutronix.de,
festevam@...il.com, alexander.stein@...tq-group.com,
dario.binacchi@...rulasolutions.com, primoz.fiser@...ik.com,
Markus.Niebel@...group.com, y.moog@...tec.de, josua@...id-run.com,
francesco.dolcini@...adex.com, maudspierings@...ontroll.com,
Stefano Radaelli <stefano.r@...iscite.com>
Subject: Re: [PATCH v1 3/3] arm64: dts: imx91-var-dart: Add support for
Variscite Sonata board
On Wed, Feb 04, 2026 at 06:03:56PM +0100, Stefano Radaelli wrote:
> From: Stefano Radaelli <stefano.r@...iscite.com>
>
> Add device tree support for the Variscite Sonata carrier board with
> the DART-MX91 system on module.
>
> The Sonata board includes
> - uSD Card support
> - USB ports and OTG
> - Additional Gigabit Ethernet interface
> - Uart interfaces
> - GPIO Expanders
> - RTC module
> - TPM module
>
> Link: https://variscite.com/carrier-boards/sonata-board/
> Signed-off-by: Stefano Radaelli <stefano.r@...iscite.com>
> ---
> arch/arm64/boot/dts/freescale/Makefile | 1 +
> .../dts/freescale/imx91-var-dart-sonata.dts | 498 ++++++++++++++++++
> 2 files changed, 499 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts
>
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index f30d3fd724d0..839d98bdd2a1 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -370,6 +370,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx91-11x11-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx91-phyboard-segin.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx91-tqma9131-mba91xxca.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx91-var-dart-sonata.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx93-9x9-qsb.dtb
>
> imx93-9x9-qsb-i3c-dtbs += imx93-9x9-qsb.dtb imx93-9x9-qsb-i3c.dtbo
> diff --git a/arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts b/arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts
> new file mode 100644
> index 000000000000..8e4bcebfdda5
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts
> @@ -0,0 +1,498 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Variscite Sonata carrier board for DART-MX91
> + *
> + * Link: https://variscite.com/carrier-boards/sonata-board/
> + *
> + * Copyright (C) 2025 Variscite Ltd. - https://www.variscite.com/
> + *
> + */
> +
> +/dts-v1/;
> +
> +#include "imx91-var-dart.dtsi"
> +
> +/ {
> + model = "Variscite DART-MX91 on Sonata-Board";
> + compatible = "variscite,var-dart-mx91-sonata",
> + "variscite,var-dart-mx91",
> + "fsl,imx91";
> +
> + aliases {
> + ethernet0 = &eqos;
> + ethernet1 = &fec;
> + gpio0 = &gpio1;
> + gpio1 = &gpio2;
> + gpio2 = &gpio3;
> + i2c0 = &lpi2c1;
> + i2c1 = &lpi2c2;
> + i2c2 = &lpi2c3;
> + mmc0 = &usdhc1;
> + mmc1 = &usdhc2;
> + serial0 = &lpuart1;
> + serial1 = &lpuart2;
> + serial2 = &lpuart3;
> + serial3 = &lpuart4;
> + serial4 = &lpuart5;
> + serial5 = &lpuart6;
> + };
> +
> + chosen {
> + stdout-path = &lpuart1;
> + };
> +
> + gpio-leds {
> + compatible = "gpio-leds";
> +
> + led-emmc {
> + label = "eMMC";
> + gpios = <&pca6408_2 7 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "mmc0";
> + };
> + };
> +
> + gpio-keys {
order as node name. put before gpio-leds
> + compatible = "gpio-keys";
> +
> + button-back {
> + label = "Back";
> + linux,code = <KEY_BACK>;
> + gpios = <&pca6408_1 7 GPIO_ACTIVE_LOW>;
> + wakeup-source;
> + };
> +
> + button-up {
> + label = "Up";
> + linux,code = <KEY_UP>;
> + gpios = <&pca6408_1 5 GPIO_ACTIVE_LOW>;
> + wakeup-source;
> + };
> +
> + button-home {
> + label = "Home";
> + linux,code = <KEY_HOME>;
> + gpios = <&pca6408_1 4 GPIO_ACTIVE_LOW>;
> + wakeup-source;
> + };
> +
> + button-down {
> + label = "Down";
> + linux,code = <KEY_DOWN>;
> + gpios = <&pca6408_1 6 GPIO_ACTIVE_LOW>;
> + wakeup-source;
> + };
button-* order by gpio pin number or node name.
> + };
> +
> + reg_usdhc2_vmmc: regulator-vmmc-usdhc2 {
> + compatible = "regulator-fixed";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_reg_usdhc2_vmmc>;
> + regulator-name = "VDD_SD2_3V3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + gpio = <&gpio4 28 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + off-on-delay-us = <20000>;
> + };
> +
> + reg_vref_1v8: regulator-adc-vref {
order by node name regulator-adc-vref instead of label.
Frank
> + compatible = "regulator-fixed";
> + regulator-name = "vref_1v8";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + reserved-memory {
> + ranges;
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + linux,cma {
> + compatible = "shared-dma-pool";
> + alloc-ranges = <0 0x80000000 0 0x40000000>;
> + reusable;
> + size = <0 0x10000000>;
> + linux,cma-default;
> + };
> + };
> +};
> +
> +&adc1 {
> + vref-supply = <®_vref_1v8>;
> + status = "okay";
> +};
> +
> +/* Use external instead of internal RTC */
> +&bbnsm_rtc {
> + status = "disabled";
> +};
> +
> +&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 = <15000>;
> + reset-deassert-us = <100000>;
> +
> + 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", "sleep";
> + pinctrl-0 = <&pinctrl_fec>;
> + pinctrl-1 = <&pinctrl_fec_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 = <ðphy1>;
> + status = "okay";
> +};
> +
> +&flexcan1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_flexcan1>;
> + status = "okay";
> +};
> +
> +&lpi2c1 {
> + clock-frequency = <400000>;
> + pinctrl-names = "default", "sleep", "gpio";
> + pinctrl-0 = <&pinctrl_lpi2c1>;
> + pinctrl-1 = <&pinctrl_lpi2c1_gpio>;
> + pinctrl-2 = <&pinctrl_lpi2c1_gpio>;
> + scl-gpios = <&gpio1 0 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
> + sda-gpios = <&gpio1 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
> + status = "okay";
> +
> + pca6408_1: gpio@20 {
> + compatible = "nxp,pcal6408";
> + reg = <0x20>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
> + };
> +
> + pca6408_2: gpio@21 {
> + compatible = "nxp,pcal6408";
> + reg = <0x21>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
> + };
> +
> + pca9534: gpio@22 {
> + compatible = "nxp,pca9534";
> + reg = <0x22>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
> + };
> +
> + st33ktpm2xi2c: tpm@2e {
> + compatible = "st,st33ktpm2xi2c", "tcg,tpm-tis-i2c";
> + reg = <0x2e>;
> + };
> +
> + /* 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 = <&gpio3>;
> + interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
> + touchscreen-size-x = <800>;
> + touchscreen-size-y = <480>;
> + touchscreen-inverted-x;
> + touchscreen-inverted-y;
> + wakeup-source;
> + };
> +
> + /* USB Type-C Controller */
> + typec@3d {
> + compatible = "nxp,ptn5150";
> + reg = <0x3d>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_extcon>;
> + interrupt-parent = <&gpio4>;
> + interrupts = <29 IRQ_TYPE_LEVEL_HIGH>;
> +
> + port {
> + typec1_dr_sw: endpoint {
> + remote-endpoint = <&usb1_drd_sw>;
> + };
> + };
> + };
> +
> + rtc@68 {
> + compatible = "dallas,ds1337";
> + reg = <0x68>;
> + };
> +};
> +
> +/* Console (J10) */
> +&lpuart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart1>;
> + status = "okay";
> +};
> +
> +/* Header (J12.4, J12.6) */
> +&lpuart6 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart6>;
> + 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 {
> + disable-over-current;
> + dr_mode = "host";
> + status = "okay";
> +};
> +
> +/* SD */
> +&usdhc2 {
> + pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
> + pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;
> + pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;
> + pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
> + pinctrl-3 = <&pinctrl_usdhc2_sleep>, <&pinctrl_usdhc2_gpio_sleep>;
> + cd-gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
> + vmmc-supply = <®_usdhc2_vmmc>;
> + bus-width = <4>;
> + no-sdio;
> + no-mmc;
> + status = "okay";
> +};
> +
> +&iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> +
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + /* GPIO Expanders shared IRQ */
> + MX91_PAD_PDM_BIT_STREAM1__GPIO1_IO10 0x31e
> + >;
> + };
> +
> + pinctrl_captouch: captouchgrp {
> + fsl,pins = <
> + MX91_PAD_CCM_CLKO2__GPIO3_IO27 0x31e
> + >;
> + };
> +
> + pinctrl_extcon: extcongrp {
> + fsl,pins = <
> + MX91_PAD_CCM_CLKO4__GPIO4_IO29 0x31e
> + >;
> + };
> +
> + pinctrl_fec: fecgrp {
> + fsl,pins = <
> + MX91_PAD_ENET2_RD0__ENET2_RGMII_RD0 0x57e
> + MX91_PAD_ENET2_RD1__ENET2_RGMII_RD1 0x57e
> + MX91_PAD_ENET2_RD2__ENET2_RGMII_RD2 0x57e
> + MX91_PAD_ENET2_RD3__ENET2_RGMII_RD3 0x37e
> + MX91_PAD_ENET2_RXC__ENET2_RGMII_RXC 0x5fe
> + MX91_PAD_ENET2_RX_CTL__ENET2_RGMII_RX_CTL 0x57e
> + MX91_PAD_ENET2_TD0__ENET2_RGMII_TD0 0x57e
> + MX91_PAD_ENET2_TD1__ENET2_RGMII_TD1 0x57e
> + MX91_PAD_ENET2_TD2__ENET2_RGMII_TD2 0x57e
> + MX91_PAD_ENET2_TD3__ENET2_RGMII_TD3 0x57e
> + MX91_PAD_ENET2_TXC__ENET2_RGMII_TXC 0x5fe
> + MX91_PAD_ENET2_TX_CTL__ENET2_RGMII_TX_CTL 0x57e
> + >;
> + };
> +
> + pinctrl_fec_sleep: fecsleepgrp {
> + fsl,pins = <
> + MX91_PAD_ENET2_RD0__GPIO4_IO24 0x51e
> + MX91_PAD_ENET2_RD1__GPIO4_IO25 0x51e
> + MX91_PAD_ENET2_RD2__GPIO4_IO26 0x51e
> + MX91_PAD_ENET2_RD3__GPIO4_IO27 0x31e
> + MX91_PAD_ENET2_RXC__GPIO4_IO23 0x51e
> + MX91_PAD_ENET2_RX_CTL__GPIO4_IO22 0x51e
> + MX91_PAD_ENET2_TD0__GPIO4_IO19 0x51e
> + MX91_PAD_ENET2_TD1__GPIO4_IO18 0x51e
> + MX91_PAD_ENET2_TD2__GPIO4_IO17 0x51e
> + MX91_PAD_ENET2_TD3__GPIO4_IO16 0x51e
> + MX91_PAD_ENET2_TXC__GPIO4_IO21 0x51e
> + MX91_PAD_ENET2_TX_CTL__GPIO4_IO20 0x51e
> + >;
> + };
> +
> + pinctrl_flexcan1: flexcan1grp {
> + fsl,pins = <
> + MX91_PAD_PDM_CLK__CAN1_TX 0x139e
> + MX91_PAD_PDM_BIT_STREAM0__CAN1_RX 0x139e
> + >;
> + };
> +
> + pinctrl_lpi2c1: lpi2c1grp {
> + fsl,pins = <
> + MX91_PAD_I2C1_SCL__LPI2C1_SCL 0x40000b9e
> + MX91_PAD_I2C1_SDA__LPI2C1_SDA 0x40000b9e
> + >;
> + };
> +
> + pinctrl_lpi2c1_gpio: lpi2c1-gpiogrp {
> + fsl,pins = <
> + MX91_PAD_I2C1_SCL__GPIO1_IO0 0x31e
> + MX91_PAD_I2C1_SDA__GPIO1_IO1 0x31e
> + >;
> + };
> +
> + pinctrl_lpi2c7: lpi2c7grp {
> + fsl,pins = <
> + MX91_PAD_GPIO_IO07__LPI2C7_SCL 0x40000b9e
> + MX91_PAD_GPIO_IO06__LPI2C7_SDA 0x40000b9e
> + >;
> + };
> +
> + pinctrl_lpi2c7_gpio: lpi2c7-gpiogrp {
> + fsl,pins = <
> + MX91_PAD_GPIO_IO07__GPIO2_IO7 0x31e
> + MX91_PAD_GPIO_IO06__GPIO2_IO6 0x31e
> + >;
> + };
> +
> + pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
> + fsl,pins = <
> + MX91_PAD_CCM_CLKO3__GPIO4_IO28 0x31e
> + >;
> + };
> +
> + pinctrl_rtc: rtcgrp {
> + fsl,pins = <
> + MX91_PAD_GPIO_IO02__GPIO2_IO2 0x31e
> + >;
> + };
> +
> + pinctrl_uart1: uart1grp {
> + fsl,pins = <
> + MX91_PAD_UART1_RXD__LPUART1_RX 0x31e
> + MX91_PAD_UART1_TXD__LPUART1_TX 0x31e
> + >;
> + };
> +
> + pinctrl_uart6: uart6grp {
> + fsl,pins = <
> + MX91_PAD_GPIO_IO05__LPUART6_RX 0x31e
> + MX91_PAD_GPIO_IO04__LPUART6_TX 0x31e
> + >;
> + };
> +
> + pinctrl_uart7: uart7grp {
> + fsl,pins = <
> + MX91_PAD_GPIO_IO09__LPUART7_RX 0x31e
> + MX91_PAD_GPIO_IO08__LPUART7_TX 0x31e
> + >;
> + };
> +
> + pinctrl_usdhc2: usdhc2grp {
> + fsl,pins = <
> + MX91_PAD_SD2_CLK__USDHC2_CLK 0x1582
> + MX91_PAD_SD2_CMD__USDHC2_CMD 0x1382
> + MX91_PAD_SD2_DATA0__USDHC2_DATA0 0x1382
> + MX91_PAD_SD2_DATA1__USDHC2_DATA1 0x1382
> + MX91_PAD_SD2_DATA2__USDHC2_DATA2 0x1382
> + MX91_PAD_SD2_DATA3__USDHC2_DATA3 0x1382
> + MX91_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e
> + >;
> + };
> +
> + pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
> + fsl,pins = <
> + MX91_PAD_SD2_CLK__USDHC2_CLK 0x158e
> + MX91_PAD_SD2_CMD__USDHC2_CMD 0x138e
> + MX91_PAD_SD2_DATA0__USDHC2_DATA0 0x138e
> + MX91_PAD_SD2_DATA1__USDHC2_DATA1 0x138e
> + MX91_PAD_SD2_DATA2__USDHC2_DATA2 0x138e
> + MX91_PAD_SD2_DATA3__USDHC2_DATA3 0x138e
> + MX91_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e
> + >;
> + };
> +
> + pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
> + fsl,pins = <
> + MX91_PAD_SD2_CLK__USDHC2_CLK 0x15fe
> + MX91_PAD_SD2_CMD__USDHC2_CMD 0x13fe
> + MX91_PAD_SD2_DATA0__USDHC2_DATA0 0x13fe
> + MX91_PAD_SD2_DATA1__USDHC2_DATA1 0x13fe
> + MX91_PAD_SD2_DATA2__USDHC2_DATA2 0x13fe
> + MX91_PAD_SD2_DATA3__USDHC2_DATA3 0x13fe
> + MX91_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e
> + >;
> + };
> +
> + pinctrl_usdhc2_sleep: usdhc2sleepgrp {
> + fsl,pins = <
> + MX91_PAD_SD2_CLK__GPIO3_IO1 0x51e
> + MX91_PAD_SD2_CMD__GPIO3_IO2 0x51e
> + MX91_PAD_SD2_DATA0__GPIO3_IO3 0x51e
> + MX91_PAD_SD2_DATA1__GPIO3_IO4 0x51e
> + MX91_PAD_SD2_DATA2__GPIO3_IO5 0x51e
> + MX91_PAD_SD2_DATA3__GPIO3_IO6 0x51e
> + MX91_PAD_SD2_VSELECT__GPIO3_IO19 0x51e
> + >;
> + };
> +
> + pinctrl_usdhc2_gpio: usdhc2gpiogrp {
> + fsl,pins = <
> + MX91_PAD_SD2_CD_B__GPIO3_IO0 0x31e
> + >;
> + };
> +
> + pinctrl_usdhc2_gpio_sleep: usdhc2gpiosleepgrp {
> + fsl,pins = <
> + MX91_PAD_SD2_CD_B__GPIO3_IO0 0x51e
> + >;
> + };
> +};
> --
> 2.47.3
>
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