arm64: dts: freescale: Add support for Variscite VAR-SOM-MX8 QuadMax

Add device tree support for the Variscite VAR-SOM-MX8 QuadMax
system on module.
This SOM is designed to be used with various carrier boards.

The module includes:
- NXP i.MX8 QuadMax 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-8-quadmax-quadplus/var-som-mx8/
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Stefano Radaelli 2026-07-17 12:29:38 +02:00 committed by Frank Li
parent 4a3f4d08f5
commit 868ced4df4

View File

@ -0,0 +1,531 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Common dtsi for Variscite VAR-SOM-MX8
*
* Link: https://variscite.com/system-on-module-som/i-mx-8/i-mx-8-quadmax-quadplus/var-som-mx8/
*
* Copyright (C) 2026 Variscite Ltd. - https://www.variscite.com/
*
*/
/dts-v1/;
#include "imx8qm.dtsi"
/ {
model = "Variscite i.MX8QM VAR-SOM-MX8 Module";
compatible = "variscite,var-som-imx8qm", "fsl,imx8qm";
memory@80000000 {
device_type = "memory";
reg = <0x00000000 0x80000000 0 0x40000000>;
};
reg_audio_supply: regulator-1p8v {
compatible = "regulator-fixed";
regulator-name = "wm8904-supply";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
reg_phy_vddio: regulator-phy-vddio {
compatible = "regulator-fixed";
regulator-name = "vddio-1v8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
vdev0vring0: memory@90000000 {
reg = <0 0x90000000 0 0x8000>;
no-map;
};
vdev0vring1: memory@90008000 {
reg = <0 0x90008000 0 0x8000>;
no-map;
};
vdev1vring0: memory@90010000 {
reg = <0 0x90010000 0 0x8000>;
no-map;
};
vdev1vring1: memory@90018000 {
reg = <0 0x90018000 0 0x8000>;
no-map;
};
rsc_table0: memory@900ff000 {
reg = <0 0x900ff000 0 0x1000>;
no-map;
};
vdev2vring0: memory@90100000 {
reg = <0 0x90100000 0 0x8000>;
no-map;
};
vdev2vring1: memory@90108000 {
reg = <0 0x90108000 0 0x8000>;
no-map;
};
vdev3vring0: memory@90110000 {
reg = <0 0x90110000 0 0x8000>;
no-map;
};
vdev3vring1: memory@90118000 {
reg = <0 0x90118000 0 0x8000>;
no-map;
};
rsc_table1: memory@901ff000 {
reg = <0 0x901ff000 0 0x1000>;
no-map;
};
vdevbuffer: memory@90400000 {
compatible = "shared-dma-pool";
reg = <0 0x90400000 0 0x100000>;
no-map;
};
dsp_reserved: memory@92400000 {
reg = <0 0x92400000 0 0x1000000>;
no-map;
};
dsp_vdev0vring0: memory@942f0000 {
reg = <0 0x942f0000 0 0x8000>;
no-map;
};
dsp_vdev0vring1: memory@942f8000 {
reg = <0 0x942f8000 0 0x8000>;
no-map;
};
dsp_vdev0buffer: memory@94300000 {
compatible = "shared-dma-pool";
reg = <0 0x94300000 0 0x100000>;
no-map;
};
/* global autoconfigured region for contiguous allocations */
linux,cma {
compatible = "shared-dma-pool";
/* VAR-SOM-MX8QM doesn't have 1GB variant */
alloc-ranges = <0 0xc0000000 0 0x3c000000>;
size = <0 0x3c000000>;
linux,cma-default;
reusable;
};
};
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 = <&esai0>;
};
};
};
&acm {
status = "okay";
};
&asrc0 {
fsl,asrc-rate = <48000>;
status = "okay";
};
&asrc1 {
fsl,asrc-rate = <48000>;
status = "okay";
};
&cm41_intmux {
status = "okay";
};
&esai0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_esai0>;
assigned-clocks = <&acm IMX_ADMA_ACM_ESAI0_MCLK_SEL>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_PLL>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_SLV_BUS>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_MST_BUS>,
<&esai0_lpcg IMX_LPCG_CLK_4>;
assigned-clock-parents = <&aud_pll_div0_lpcg IMX_LPCG_CLK_0>;
assigned-clock-rates = <0>, <786432000>, <49152000>, <12288000>, <49152000>;
#sound-dai-cells = <0>;
status = "okay";
};
&fec1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_fec1>;
/*
* 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 {
#address-cells = <1>;
#size-cells = <0>;
ethphy0: ethernet-phy@4 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <4>;
reset-gpios = <&lsio_gpio2 28 GPIO_ACTIVE_LOW>;
reset-assert-us = <10000>;
reset-deassert-us = <20000>;
vddio-supply = <&reg_phy_vddio>;
};
};
};
&gpio0_mipi_csi0 {
status = "disabled";
};
&gpio0_mipi_csi1 {
status = "disabled";
};
&i2c0 {
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c0>;
status = "okay";
wm8904: codec@1a {
compatible = "wlf,wm8904";
reg = <0x1a>;
#sound-dai-cells = <0>;
clocks = <&mclkout0_lpcg IMX_LPCG_CLK_0>;
clock-names = "mclk";
assigned-clocks = <&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_PLL>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_SLV_BUS>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_MST_BUS>,
<&mclkout0_lpcg IMX_LPCG_CLK_0>;
assigned-clock-rates = <786432000>, <49152000>, <12288000>, <12288000>;
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>;
};
};
/* Bluetooth */
&lpuart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_lpuart1>;
uart-has-rtscts;
status = "okay";
};
&mu_m0{
status = "okay";
};
&mu1_m0{
status = "okay";
};
&mu2_m0{
status = "okay";
};
&rtc {
status = "disabled";
};
&sai6 {
assigned-clocks = <&acm IMX_ADMA_ACM_SAI6_MCLK_SEL>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_PLL>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_SLV_BUS>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_MST_BUS>,
<&sai6_lpcg IMX_LPCG_CLK_4>;
assigned-clock-parents = <&aud_pll_div1_lpcg IMX_LPCG_CLK_0>;
assigned-clock-rates = <0>, <786432000>, <98304000>, <12288000>, <98304000>;
fsl,sai-asynchronous;
status = "okay";
};
&sai7 {
assigned-clocks = <&acm IMX_ADMA_ACM_SAI7_MCLK_SEL>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_PLL>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_SLV_BUS>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_MST_BUS>,
<&sai7_lpcg IMX_LPCG_CLK_4>;
assigned-clock-parents = <&aud_pll_div1_lpcg IMX_LPCG_CLK_0>;
assigned-clock-rates = <0>, <786432000>, <98304000>, <12288000>, <98304000>;
fsl,sai-asynchronous;
status = "okay";
};
&thermal_zones {
pmic-thermal {
polling-delay-passive = <250>;
polling-delay = <2000>;
thermal-sensors = <&tsens IMX_SC_R_PMIC_0>;
trips {
pmic_alert0: trip0 {
temperature = <110000>;
hysteresis = <2000>;
type = "passive";
};
pmic_crit0: trip1 {
temperature = <125000>;
hysteresis = <2000>;
type = "critical";
};
};
cooling-maps {
map0 {
trip = <&pmic_alert0>;
cooling-device = <&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&A53_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&A53_2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
};
};
};
};
/* eMMC */
&usdhc1 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc1>;
pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
bus-width = <8>;
non-removable;
status = "okay";
};
/* WIFI */
&usdhc3 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc3>, <&pinctrl_wifi>;
pinctrl-1 = <&pinctrl_usdhc3_100mhz>, <&pinctrl_wifi>;
pinctrl-2 = <&pinctrl_usdhc3_200mhz>, <&pinctrl_wifi>;
bus-width = <4>;
non-removable;
status = "okay";
brcmf: wifi@1 {
compatible = "brcm,bcm4329-fmac";
reg = <1>;
};
};
&iomuxc {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_hog>;
pinctrl_esai0: esai0grp {
fsl,pins = <
IMX8QM_ESAI0_FSR_AUD_ESAI0_FSR 0xc6000040
IMX8QM_ESAI0_FST_AUD_ESAI0_FST 0xc6000040
IMX8QM_ESAI0_SCKR_AUD_ESAI0_SCKR 0xc6000040
IMX8QM_ESAI0_SCKT_AUD_ESAI0_SCKT 0xc6000040
IMX8QM_ESAI0_TX0_AUD_ESAI0_TX0 0xc6000040
IMX8QM_ESAI0_TX5_RX0_AUD_ESAI0_TX5_RX0 0xc6000040
IMX8QM_MCLK_OUT0_AUD_ACM_MCLK_OUT0 0xc600004c
>;
};
pinctrl_fec1: fec1grp {
fsl,pins = <
IMX8QM_ENET0_MDC_CONN_ENET0_MDC 0x06000048
IMX8QM_ENET0_MDIO_CONN_ENET0_MDIO 0x06000048
IMX8QM_ENET0_RGMII_TX_CTL_CONN_ENET0_RGMII_TX_CTL 0x06000048
IMX8QM_ENET0_RGMII_TXC_CONN_ENET0_RGMII_TXC 0x06000048
IMX8QM_ENET0_RGMII_TXD0_CONN_ENET0_RGMII_TXD0 0x06000048
IMX8QM_ENET0_RGMII_TXD1_CONN_ENET0_RGMII_TXD1 0x06000048
IMX8QM_ENET0_RGMII_TXD2_CONN_ENET0_RGMII_TXD2 0x06000048
IMX8QM_ENET0_RGMII_TXD3_CONN_ENET0_RGMII_TXD3 0x06000048
IMX8QM_ENET0_RGMII_RXC_CONN_ENET0_RGMII_RXC 0x06000048
IMX8QM_ENET0_RGMII_RX_CTL_CONN_ENET0_RGMII_RX_CTL 0x06000048
IMX8QM_ENET0_RGMII_RXD0_CONN_ENET0_RGMII_RXD0 0x06000048
IMX8QM_ENET0_RGMII_RXD1_CONN_ENET0_RGMII_RXD1 0x06000048
IMX8QM_ENET0_RGMII_RXD2_CONN_ENET0_RGMII_RXD2 0x06000048
IMX8QM_ENET0_RGMII_RXD3_CONN_ENET0_RGMII_RXD3 0x06000048
IMX8QM_ESAI0_TX2_RX3_LSIO_GPIO2_IO28 0x06000028
>;
};
pinctrl_hog: hoggrp {
fsl,pins = <
IMX8QM_ESAI1_FSR_LSIO_GPIO2_IO04 0x00000041
IMX8QM_ESAI1_FST_LSIO_GPIO2_IO05 0x00000041
IMX8QM_ESAI1_SCKR_LSIO_GPIO2_IO06 0x00000041
IMX8QM_ESAI1_SCKT_LSIO_GPIO2_IO07 0x00000041
IMX8QM_SPDIF0_EXT_CLK_LSIO_GPIO2_IO16 0x00000041
>;
};
pinctrl_i2c0: i2c0grp {
fsl,pins = <
IMX8QM_HDMI_TX0_TS_SCL_DMA_I2C0_SCL 0xc6000020
IMX8QM_HDMI_TX0_TS_SDA_DMA_I2C0_SDA 0xc6000020
>;
};
pinctrl_lpuart1: lpuart1grp {
fsl,pins = <
IMX8QM_UART1_RX_DMA_UART1_RX 0x06000020
IMX8QM_UART1_TX_DMA_UART1_TX 0x06000020
IMX8QM_UART1_CTS_B_DMA_UART1_RTS_B 0x06000020
IMX8QM_UART1_RTS_B_DMA_UART1_CTS_B 0x06000020
>;
};
pinctrl_usdhc1: usdhc1grp {
fsl,pins = <
IMX8QM_EMMC0_CLK_CONN_EMMC0_CLK 0x06000041
IMX8QM_EMMC0_CMD_CONN_EMMC0_CMD 0x00000021
IMX8QM_EMMC0_DATA0_CONN_EMMC0_DATA0 0x00000021
IMX8QM_EMMC0_DATA1_CONN_EMMC0_DATA1 0x00000021
IMX8QM_EMMC0_DATA2_CONN_EMMC0_DATA2 0x00000021
IMX8QM_EMMC0_DATA3_CONN_EMMC0_DATA3 0x00000021
IMX8QM_EMMC0_DATA4_CONN_EMMC0_DATA4 0x00000021
IMX8QM_EMMC0_DATA5_CONN_EMMC0_DATA5 0x00000021
IMX8QM_EMMC0_DATA6_CONN_EMMC0_DATA6 0x00000021
IMX8QM_EMMC0_DATA7_CONN_EMMC0_DATA7 0x00000021
IMX8QM_EMMC0_STROBE_CONN_EMMC0_STROBE 0x06000041
IMX8QM_EMMC0_RESET_B_CONN_EMMC0_RESET_B 0x00000021
>;
};
pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
fsl,pins = <
IMX8QM_EMMC0_CLK_CONN_EMMC0_CLK 0x06000040
IMX8QM_EMMC0_CMD_CONN_EMMC0_CMD 0x00000020
IMX8QM_EMMC0_DATA0_CONN_EMMC0_DATA0 0x00000020
IMX8QM_EMMC0_DATA1_CONN_EMMC0_DATA1 0x00000020
IMX8QM_EMMC0_DATA2_CONN_EMMC0_DATA2 0x00000020
IMX8QM_EMMC0_DATA3_CONN_EMMC0_DATA3 0x00000020
IMX8QM_EMMC0_DATA4_CONN_EMMC0_DATA4 0x00000020
IMX8QM_EMMC0_DATA5_CONN_EMMC0_DATA5 0x00000020
IMX8QM_EMMC0_DATA6_CONN_EMMC0_DATA6 0x00000020
IMX8QM_EMMC0_DATA7_CONN_EMMC0_DATA7 0x00000020
IMX8QM_EMMC0_STROBE_CONN_EMMC0_STROBE 0x06000040
IMX8QM_EMMC0_RESET_B_CONN_EMMC0_RESET_B 0x00000020
>;
};
pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
fsl,pins = <
IMX8QM_EMMC0_CLK_CONN_EMMC0_CLK 0x06000040
IMX8QM_EMMC0_CMD_CONN_EMMC0_CMD 0x00000020
IMX8QM_EMMC0_DATA0_CONN_EMMC0_DATA0 0x00000020
IMX8QM_EMMC0_DATA1_CONN_EMMC0_DATA1 0x00000020
IMX8QM_EMMC0_DATA2_CONN_EMMC0_DATA2 0x00000020
IMX8QM_EMMC0_DATA3_CONN_EMMC0_DATA3 0x00000020
IMX8QM_EMMC0_DATA4_CONN_EMMC0_DATA4 0x00000020
IMX8QM_EMMC0_DATA5_CONN_EMMC0_DATA5 0x00000020
IMX8QM_EMMC0_DATA6_CONN_EMMC0_DATA6 0x00000020
IMX8QM_EMMC0_DATA7_CONN_EMMC0_DATA7 0x00000020
IMX8QM_EMMC0_STROBE_CONN_EMMC0_STROBE 0x06000040
IMX8QM_EMMC0_RESET_B_CONN_EMMC0_RESET_B 0x00000020
>;
};
pinctrl_usdhc3: usdhc3grp {
fsl,pins = <
IMX8QM_USDHC2_CLK_CONN_USDHC2_CLK 0x06000041
IMX8QM_USDHC2_CMD_CONN_USDHC2_CMD 0x00000021
IMX8QM_USDHC2_DATA0_CONN_USDHC2_DATA0 0x00000021
IMX8QM_USDHC2_DATA1_CONN_USDHC2_DATA1 0x00000021
IMX8QM_USDHC2_DATA2_CONN_USDHC2_DATA2 0x00000021
IMX8QM_USDHC2_DATA3_CONN_USDHC2_DATA3 0x00000021
>;
};
pinctrl_usdhc3_100mhz: usdhc3100mhzgrp {
fsl,pins = <
IMX8QM_USDHC2_CLK_CONN_USDHC2_CLK 0x06000040
IMX8QM_USDHC2_CMD_CONN_USDHC2_CMD 0x00000020
IMX8QM_USDHC2_DATA0_CONN_USDHC2_DATA0 0x00000020
IMX8QM_USDHC2_DATA1_CONN_USDHC2_DATA1 0x00000020
IMX8QM_USDHC2_DATA2_CONN_USDHC2_DATA2 0x00000020
IMX8QM_USDHC2_DATA3_CONN_USDHC2_DATA3 0x00000020
>;
};
pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
fsl,pins = <
IMX8QM_USDHC2_CLK_CONN_USDHC2_CLK 0x06000040
IMX8QM_USDHC2_CMD_CONN_USDHC2_CMD 0x00000020
IMX8QM_USDHC2_DATA0_CONN_USDHC2_DATA0 0x00000020
IMX8QM_USDHC2_DATA1_CONN_USDHC2_DATA1 0x00000020
IMX8QM_USDHC2_DATA2_CONN_USDHC2_DATA2 0x00000020
IMX8QM_USDHC2_DATA3_CONN_USDHC2_DATA3 0x00000020
>;
};
pinctrl_wifi: wifigrp {
fsl,pins = <
/* GPIOs used by user space WiFi init */
IMX8QM_SCU_GPIO0_07_SCU_DSC_RTC_CLOCK_OUTPUT_32K 0xc600004c
IMX8QM_SCU_GPIO0_03_LSIO_GPIO0_IO31 0x06000021
IMX8QM_SCU_GPIO0_02_LSIO_GPIO0_IO30 0x00000021
IMX8QM_QSPI1A_DATA0_LSIO_GPIO4_IO26 0x00000021
>;
};
};