* [PATCH v3 1/1] imx8mn_var_som: Add support for Variscite VAR-SOM-MX8M-NANO board
2021-11-16 3:50 [PATCH v3 0/1] imx8mn_var_som: Add support for Variscite VAR-SOM-MX8M-NANO board Ariel D'Alessandro
@ 2021-11-16 3:50 ` Ariel D'Alessandro
2021-11-16 11:37 ` Fabio Estevam
0 siblings, 1 reply; 6+ messages in thread
From: Ariel D'Alessandro @ 2021-11-16 3:50 UTC (permalink / raw)
To: u-boot
Cc: uboot-imx, aford173, andre.przywara, andrey.zhizhikin,
ariel.dalessandro, christianshewitt, festevam, hs, iliev, jagan,
marcel.ziswiler, narmstrong, patrick.delaunay, pbrobinson,
peng.fan, rick, sbabic, seanga2, sjg, t.remmet, tharvey, trini
Add support for iMX8MN VAR-SOM-MX8M-NANO board. Enables support for:
- 1GiB DDR4 RAM
- 16 GiB eMMC
- SD card
- Gigabit ethernet
- USBOTG1 peripheral - fastboot
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
---
arch/arm/dts/Makefile | 1 +
.../dts/imx8mn-var-som-symphony-u-boot.dtsi | 256 ++++++++
arch/arm/dts/imx8mn-var-som-symphony.dts | 240 ++++++++
arch/arm/dts/imx8mn-var-som.dtsi | 547 ++++++++++++++++++
arch/arm/mach-imx/imx8m/Kconfig | 9 +
board/variscite/imx8mn_var_som/Kconfig | 17 +
board/variscite/imx8mn_var_som/MAINTAINERS | 7 +
board/variscite/imx8mn_var_som/Makefile | 12 +
board/variscite/imx8mn_var_som/ddr4_timing.c | 528 +++++++++++++++++
.../variscite/imx8mn_var_som/imx8mn_var_som.c | 30 +
.../imx8mn_var_som/imximage-8mn-ddr4.cfg | 10 +
board/variscite/imx8mn_var_som/spl.c | 93 +++
configs/imx8mn_var_som_defconfig | 98 ++++
include/configs/imx8mn_var_som.h | 95 +++
14 files changed, 1943 insertions(+)
create mode 100644 arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi
create mode 100644 arch/arm/dts/imx8mn-var-som-symphony.dts
create mode 100644 arch/arm/dts/imx8mn-var-som.dtsi
create mode 100644 board/variscite/imx8mn_var_som/Kconfig
create mode 100644 board/variscite/imx8mn_var_som/MAINTAINERS
create mode 100644 board/variscite/imx8mn_var_som/Makefile
create mode 100644 board/variscite/imx8mn_var_som/ddr4_timing.c
create mode 100644 board/variscite/imx8mn_var_som/imx8mn_var_som.c
create mode 100644 board/variscite/imx8mn_var_som/imximage-8mn-ddr4.cfg
create mode 100644 board/variscite/imx8mn_var_som/spl.c
create mode 100644 configs/imx8mn_var_som_defconfig
create mode 100644 include/configs/imx8mn_var_som.h
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index cc34da7bd83..8d27876fa0e 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -901,6 +901,7 @@ dtb-$(CONFIG_ARCH_IMX8M) += \
imx8mn-ddr4-evk.dtb \
imx8mq-cm.dtb \
imx8mn-evk.dtb \
+ imx8mn-var-som-symphony.dtb \
imx8mq-evk.dtb \
imx8mm-beacon-kit.dtb \
imx8mn-beacon-kit.dtb \
diff --git a/arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi b/arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi
new file mode 100644
index 00000000000..ce475885df6
--- /dev/null
+++ b/arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Collabora Ltd.
+ */
+
+/ {
+ binman: binman {
+ multiple-images;
+ };
+
+ wdt-reboot {
+ compatible = "wdt-reboot";
+ wdt = <&wdog1>;
+ u-boot,dm-spl;
+ };
+};
+
+&{/soc@0} {
+ u-boot,dm-pre-reloc;
+ u-boot,dm-spl;
+};
+
+&{/soc@0/bus@30800000/i2c@30a20000/pmic@4b} {
+ u-boot,dm-spl;
+};
+
+&{/soc@0/bus@30800000/i2c@30a20000/pmic@4b/regulators} {
+ u-boot,dm-spl;
+};
+
+&aips1 {
+ u-boot,dm-pre-reloc;
+ u-boot,dm-spl;
+};
+
+&aips3 {
+ u-boot,dm-spl;
+};
+
+&aips4 {
+ u-boot,dm-spl;
+};
+
+&clk {
+ u-boot,dm-pre-reloc;
+ u-boot,dm-spl;
+ /delete-property/ assigned-clocks;
+ /delete-property/ assigned-clock-parents;
+ /delete-property/ assigned-clock-rates;
+};
+
+&gpio1 {
+ u-boot,dm-spl;
+};
+
+&gpio2 {
+ u-boot,dm-spl;
+};
+
+&gpio4 {
+ u-boot,dm-spl;
+};
+
+&i2c1 {
+ u-boot,dm-spl;
+};
+
+&iomuxc {
+ u-boot,dm-spl;
+};
+
+&osc_24m {
+ u-boot,dm-pre-reloc;
+ u-boot,dm-spl;
+};
+
+&pinctrl_i2c1 {
+ u-boot,dm-spl;
+};
+
+&pinctrl_pmic {
+ u-boot,dm-spl;
+};
+
+&pinctrl_reg_usdhc2_vmmc {
+ u-boot,dm-spl;
+};
+
+&pinctrl_uart4 {
+ u-boot,dm-spl;
+};
+
+&pinctrl_usdhc2 {
+ u-boot,dm-spl;
+};
+
+&pinctrl_usdhc3 {
+ u-boot,dm-spl;
+};
+
+&pinctrl_wdog {
+ u-boot,dm-spl;
+};
+
+&uart4 {
+ u-boot,dm-spl;
+};
+
+&usdhc2 {
+ u-boot,dm-spl;
+};
+
+&usdhc3 {
+ u-boot,dm-spl;
+};
+
+&wdog1 {
+ u-boot,dm-spl;
+};
+
+&binman {
+ u-boot-spl-ddr {
+ align = <4>;
+ align-size = <4>;
+ filename = "u-boot-spl-ddr.bin";
+ pad-byte = <0xff>;
+
+ u-boot-spl {
+ align-end = <4>;
+ filename = "u-boot-spl.bin";
+ };
+
+ 1d-imem {
+ filename = "ddr4_imem_1d.bin";
+ size = <0x8000>;
+ type = "blob-ext";
+ };
+
+ 1d_dmem {
+ filename = "ddr4_dmem_1d.bin";
+ size = <0x4000>;
+ type = "blob-ext";
+ };
+
+ 2d_imem {
+ filename = "ddr4_imem_2d.bin";
+ size = <0x8000>;
+ type = "blob-ext";
+ };
+
+ 2d_dmem {
+ filename = "ddr4_dmem_2d.bin";
+ size = <0x4000>;
+ type = "blob-ext";
+ };
+ };
+
+ spl {
+ filename = "spl.bin";
+
+ mkimage {
+ args = "-n spl/u-boot-spl.cfgout -T imx8mimage -e 0x912000";
+
+ blob {
+ filename = "u-boot-spl-ddr.bin";
+ };
+ };
+ };
+
+ itb {
+ filename = "u-boot.itb";
+
+ fit {
+ description = "Configuration to load ATF before U-Boot";
+ fit,external-offset = <CONFIG_FIT_EXTERNAL_OFFSET>;
+ fit,fdt-list = "of-list";
+ #address-cells = <1>;
+
+ images {
+ uboot {
+ arch = "arm64";
+ compression = "none";
+ description = "U-Boot (64-bit)";
+ load = <CONFIG_SYS_TEXT_BASE>;
+ type = "standalone";
+
+ uboot_blob {
+ filename = "u-boot-nodtb.bin";
+ type = "blob-ext";
+ };
+ };
+
+ atf {
+ arch = "arm64";
+ compression = "none";
+ description = "ARM Trusted Firmware";
+ entry = <0x960000>;
+ load = <0x960000>;
+ type = "firmware";
+
+ atf_blob {
+ filename = "bl31.bin";
+ type = "blob-ext";
+ };
+ };
+
+ binman_fip: fip {
+ arch = "arm64";
+ compression = "none";
+ description = "Trusted Firmware FIP";
+ load = <0x40310000>;
+ type = "firmware";
+ };
+
+ @fdt-SEQ {
+ compression = "none";
+ description = "NAME";
+ type = "flat_dt";
+
+ uboot_fdt_blob {
+ filename = "u-boot.dtb";
+ type = "blob-ext";
+ };
+ };
+ };
+
+ configurations {
+ default = "@config-DEFAULT-SEQ";
+
+ binman_configuration: @config-SEQ {
+ description = "NAME";
+ fdt = "fdt-SEQ";
+ firmware = "uboot";
+ loadables = "atf";
+ };
+ };
+ };
+ };
+
+ imx-boot {
+ filename = "flash.bin";
+ pad-byte = <0x00>;
+
+ spl {
+ filename = "spl.bin";
+ offset = <0x0>;
+ type = "blob-ext";
+ };
+
+ binman_uboot: uboot {
+ filename = "u-boot.itb";
+ offset = <0x58000>;
+ type = "blob-ext";
+ };
+ };
+};
diff --git a/arch/arm/dts/imx8mn-var-som-symphony.dts b/arch/arm/dts/imx8mn-var-som-symphony.dts
new file mode 100644
index 00000000000..f61c48776cf
--- /dev/null
+++ b/arch/arm/dts/imx8mn-var-som-symphony.dts
@@ -0,0 +1,240 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2019-2020 Variscite Ltd.
+ * Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>
+ */
+
+/dts-v1/;
+
+#include "imx8mn-var-som.dtsi"
+
+/ {
+ model = "Variscite VAR-SOM-MX8MN Symphony evaluation board";
+ compatible = "variscite,var-som-mx8mn-symphony", "variscite,var-som-mx8mn", "fsl,imx8mn";
+
+ reg_usdhc2_vmmc: regulator-usdhc2-vmmc {
+ compatible = "regulator-fixed";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_reg_usdhc2_vmmc>;
+ regulator-name = "VSD_3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpio4 22 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ back {
+ label = "Back";
+ gpios = <&pca9534 1 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_BACK>;
+ };
+
+ home {
+ label = "Home";
+ gpios = <&pca9534 2 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_HOME>;
+ };
+
+ menu {
+ label = "Menu";
+ gpios = <&pca9534 3 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_MENU>;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led {
+ label = "Heartbeat";
+ gpios = <&pca9534 0 GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "heartbeat";
+ };
+ };
+};
+
+ðphy {
+ reset-gpios = <&pca9534 5 GPIO_ACTIVE_HIGH>;
+};
+
+&i2c2 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c2>;
+ status = "okay";
+
+ pca9534: gpio@20 {
+ compatible = "nxp,pca9534";
+ reg = <0x20>;
+ gpio-controller;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pca9534>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+ #gpio-cells = <2>;
+ wakeup-source;
+
+ /* USB 3.0 OTG (usbotg1) / SATA port switch, set to USB 3.0 */
+ usb3-sata-sel-hog {
+ gpio-hog;
+ gpios = <4 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "usb3_sata_sel";
+ };
+
+ som-vselect-hog {
+ gpio-hog;
+ gpios = <6 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "som_vselect";
+ };
+
+ enet-sel-hog {
+ gpio-hog;
+ gpios = <7 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "enet_sel";
+ };
+ };
+
+ extcon_usbotg1: typec@3d {
+ compatible = "nxp,ptn5150";
+ reg = <0x3d>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ptn5150>;
+ status = "okay";
+ };
+};
+
+&i2c3 {
+ /* Capacitive touch controller */
+ ft5x06_ts: touchscreen@38 {
+ compatible = "edt,edt-ft5406";
+ reg = <0x38>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_captouch>;
+ interrupt-parent = <&gpio5>;
+ interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
+
+ touchscreen-size-x = <800>;
+ touchscreen-size-y = <480>;
+ touchscreen-inverted-x;
+ touchscreen-inverted-y;
+ };
+
+ rtc@68 {
+ compatible = "dallas,ds1337";
+ reg = <0x68>;
+ };
+};
+
+/* Header */
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
+ status = "okay";
+};
+
+/* Header */
+&uart3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart3>;
+ status = "okay";
+};
+
+&usbotg1 {
+ disable-over-current;
+ extcon = <&extcon_usbotg1>, <&extcon_usbotg1>;
+};
+
+&pinctrl_fec1 {
+ fsl,pins = <
+ MX8MN_IOMUXC_ENET_MDC_ENET1_MDC 0x3
+ MX8MN_IOMUXC_ENET_MDIO_ENET1_MDIO 0x3
+ MX8MN_IOMUXC_ENET_TD3_ENET1_RGMII_TD3 0x1f
+ MX8MN_IOMUXC_ENET_TD2_ENET1_RGMII_TD2 0x1f
+ MX8MN_IOMUXC_ENET_TD1_ENET1_RGMII_TD1 0x1f
+ MX8MN_IOMUXC_ENET_TD0_ENET1_RGMII_TD0 0x1f
+ MX8MN_IOMUXC_ENET_RD3_ENET1_RGMII_RD3 0x91
+ MX8MN_IOMUXC_ENET_RD2_ENET1_RGMII_RD2 0x91
+ MX8MN_IOMUXC_ENET_RD1_ENET1_RGMII_RD1 0x91
+ MX8MN_IOMUXC_ENET_RD0_ENET1_RGMII_RD0 0x91
+ MX8MN_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x1f
+ MX8MN_IOMUXC_ENET_RXC_ENET1_RGMII_RXC 0x91
+ MX8MN_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL 0x91
+ MX8MN_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL 0x1f
+ /* Remove the MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9 as not used */
+ >;
+};
+
+&pinctrl_fec1_sleep {
+ fsl,pins = <
+ MX8MN_IOMUXC_ENET_MDC_GPIO1_IO16 0x120
+ MX8MN_IOMUXC_ENET_MDIO_GPIO1_IO17 0x120
+ MX8MN_IOMUXC_ENET_TD3_GPIO1_IO18 0x120
+ MX8MN_IOMUXC_ENET_TD2_GPIO1_IO19 0x120
+ MX8MN_IOMUXC_ENET_TD1_GPIO1_IO20 0x120
+ MX8MN_IOMUXC_ENET_TD0_GPIO1_IO21 0x120
+ MX8MN_IOMUXC_ENET_RD3_GPIO1_IO29 0x120
+ MX8MN_IOMUXC_ENET_RD2_GPIO1_IO28 0x120
+ MX8MN_IOMUXC_ENET_RD1_GPIO1_IO27 0x120
+ MX8MN_IOMUXC_ENET_RD0_GPIO1_IO26 0x120
+ MX8MN_IOMUXC_ENET_TXC_GPIO1_IO23 0x120
+ MX8MN_IOMUXC_ENET_RXC_GPIO1_IO25 0x120
+ MX8MN_IOMUXC_ENET_RX_CTL_GPIO1_IO24 0x120
+ MX8MN_IOMUXC_ENET_TX_CTL_GPIO1_IO22 0x120
+ /* Remove the MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9 as not used */
+ >;
+};
+
+&iomuxc {
+ pinctrl_captouch: captouchgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SPDIF_RX_GPIO5_IO4 0x16
+ >;
+ };
+
+ pinctrl_i2c2: i2c2grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_I2C2_SCL_I2C2_SCL 0x400001c3
+ MX8MN_IOMUXC_I2C2_SDA_I2C2_SDA 0x400001c3
+ >;
+ };
+
+ pinctrl_pca9534: pca9534grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_GPIO1_IO07_GPIO1_IO7 0x16
+ >;
+ };
+
+ pinctrl_ptn5150: ptn5150grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_GPIO1_IO11_GPIO1_IO11 0x16
+ >;
+ };
+
+ pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SAI2_RXC_GPIO4_IO22 0x41
+ >;
+ };
+
+ pinctrl_uart1: uart1grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_UART1_RXD_UART1_DCE_RX 0x140
+ MX8MN_IOMUXC_UART1_TXD_UART1_DCE_TX 0x140
+ >;
+ };
+
+ pinctrl_uart3: uart3grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_UART3_RXD_UART3_DCE_RX 0x140
+ MX8MN_IOMUXC_UART3_TXD_UART3_DCE_TX 0x140
+ >;
+ };
+};
diff --git a/arch/arm/dts/imx8mn-var-som.dtsi b/arch/arm/dts/imx8mn-var-som.dtsi
new file mode 100644
index 00000000000..f97209fbd8b
--- /dev/null
+++ b/arch/arm/dts/imx8mn-var-som.dtsi
@@ -0,0 +1,547 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2019 NXP
+ * Copyright 2019-2020 Variscite Ltd.
+ * Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>
+ */
+
+#include "imx8mn.dtsi"
+
+/ {
+ model = "Variscite VAR-SOM-MX8MN module";
+ compatible = "variscite,var-som-mx8mn", "fsl,imx8mn";
+
+ chosen {
+ stdout-path = &uart4;
+ };
+
+ memory@40000000 {
+ device_type = "memory";
+ reg = <0x0 0x40000000 0 0x40000000>;
+ };
+
+ 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>;
+ gpio = <&gpio2 9 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+};
+
+&A53_0 {
+ cpu-supply = <&buck2_reg>;
+};
+
+&A53_1 {
+ cpu-supply = <&buck2_reg>;
+};
+
+&A53_2 {
+ cpu-supply = <&buck2_reg>;
+};
+
+&A53_3 {
+ cpu-supply = <&buck2_reg>;
+};
+
+&ecspi1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ecspi1>;
+ cs-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>,
+ <&gpio1 0 GPIO_ACTIVE_LOW>;
+ /delete-property/ dmas;
+ /delete-property/ dma-names;
+ status = "okay";
+
+ /* Resistive touch controller */
+ touchscreen@0 {
+ reg = <0>;
+ compatible = "ti,ads7846";
+ 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>;
+ touchscreen-size-x = /bits/ 16 <4008>;
+ ti,y-min = /bits/ 16 <282>;
+ touchscreen-size-y = /bits/ 16 <3864>;
+ ti,x-plate-ohms = /bits/ 16 <180>;
+ touchscreen-max-pressure = /bits/ 16 <255>;
+ touchscreen-average-samples = /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;
+ };
+};
+
+&fec1 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&pinctrl_fec1>;
+ pinctrl-1 = <&pinctrl_fec1_sleep>;
+ phy-mode = "rgmii";
+ phy-handle = <ðphy>;
+ phy-supply = <®_eth_phy>;
+ phy-reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+ phy-reset-duration = <10>;
+ fsl,magic-packet;
+ status = "okay";
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ethphy: ethernet-phy@4 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <4>;
+ };
+ };
+};
+
+&i2c1 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c1>;
+ 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 {
+ regulator-name = "buck3";
+ regulator-min-microvolt = <700000>;
+ regulator-max-microvolt = <1350000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ buck4_reg: BUCK4 {
+ regulator-name = "buck4";
+ regulator-min-microvolt = <2600000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ buck5_reg: BUCK5 {
+ regulator-name = "buck5";
+ regulator-min-microvolt = <1605000>;
+ regulator-max-microvolt = <1995000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ buck6_reg: BUCK6 {
+ 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-compatible = "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 = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c3>;
+ status = "okay";
+
+ /* TODO: configure audio, as of now just put a placeholder */
+ wm8904: codec@1a {
+ compatible = "wlf,wm8904";
+ reg = <0x1a>;
+ status = "disabled";
+ };
+};
+
+&snvs_pwrkey {
+ status = "okay";
+};
+
+/* Bluetooth */
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
+ assigned-clocks = <&clk IMX8MN_CLK_UART2>;
+ assigned-clock-parents = <&clk IMX8MN_SYS_PLL1_80M>;
+ uart-has-rtscts;
+ status = "okay";
+};
+
+/* Console */
+&uart4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart4>;
+ status = "okay";
+};
+
+&usbotg1 {
+ dr_mode = "peripheral";
+ status = "okay";
+};
+
+/* WIFI */
+&usdhc1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default", "state_100mhz", "state_200mhz";
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
+ bus-width = <4>;
+ non-removable;
+ keep-power-in-suspend;
+ status = "okay";
+
+ brcmf: bcrmf@1 {
+ reg = <1>;
+ compatible = "brcm,bcm4329-fmac";
+ };
+};
+
+/* SD */
+&usdhc2 {
+ assigned-clocks = <&clk IMX8MN_CLK_USDHC2>;
+ assigned-clock-rates = <200000000>;
+ 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 = <&gpio1 10 GPIO_ACTIVE_LOW>;
+ bus-width = <4>;
+ vmmc-supply = <®_usdhc2_vmmc>;
+ status = "okay";
+};
+
+/* eMMC */
+&usdhc3 {
+ assigned-clocks = <&clk IMX8MN_CLK_USDHC3_ROOT>;
+ assigned-clock-rates = <400000000>;
+ 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_ecspi1: ecspi1grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK 0x13
+ MX8MN_IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI 0x13
+ MX8MN_IOMUXC_ECSPI1_MISO_ECSPI1_MISO 0x13
+ MX8MN_IOMUXC_GPIO1_IO14_GPIO1_IO14 0x13
+ MX8MN_IOMUXC_GPIO1_IO00_GPIO1_IO0 0x13
+ >;
+ };
+
+ pinctrl_fec1: fec1grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_ENET_MDC_ENET1_MDC 0x3
+ MX8MN_IOMUXC_ENET_MDIO_ENET1_MDIO 0x3
+ MX8MN_IOMUXC_ENET_TD3_ENET1_RGMII_TD3 0x1f
+ MX8MN_IOMUXC_ENET_TD2_ENET1_RGMII_TD2 0x1f
+ MX8MN_IOMUXC_ENET_TD1_ENET1_RGMII_TD1 0x1f
+ MX8MN_IOMUXC_ENET_TD0_ENET1_RGMII_TD0 0x1f
+ MX8MN_IOMUXC_ENET_RD3_ENET1_RGMII_RD3 0x91
+ MX8MN_IOMUXC_ENET_RD2_ENET1_RGMII_RD2 0x91
+ MX8MN_IOMUXC_ENET_RD1_ENET1_RGMII_RD1 0x91
+ MX8MN_IOMUXC_ENET_RD0_ENET1_RGMII_RD0 0x91
+ MX8MN_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x1f
+ MX8MN_IOMUXC_ENET_RXC_ENET1_RGMII_RXC 0x91
+ MX8MN_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL 0x91
+ MX8MN_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL 0x1f
+ MX8MN_IOMUXC_GPIO1_IO09_GPIO1_IO9 0x19
+ >;
+ };
+
+ pinctrl_fec1_sleep: fec1sleepgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_ENET_MDC_GPIO1_IO16 0x120
+ MX8MN_IOMUXC_ENET_MDIO_GPIO1_IO17 0x120
+ MX8MN_IOMUXC_ENET_TD3_GPIO1_IO18 0x120
+ MX8MN_IOMUXC_ENET_TD2_GPIO1_IO19 0x120
+ MX8MN_IOMUXC_ENET_TD1_GPIO1_IO20 0x120
+ MX8MN_IOMUXC_ENET_TD0_GPIO1_IO21 0x120
+ MX8MN_IOMUXC_ENET_RD3_GPIO1_IO29 0x120
+ MX8MN_IOMUXC_ENET_RD2_GPIO1_IO28 0x120
+ MX8MN_IOMUXC_ENET_RD1_GPIO1_IO27 0x120
+ MX8MN_IOMUXC_ENET_RD0_GPIO1_IO26 0x120
+ MX8MN_IOMUXC_ENET_TXC_GPIO1_IO23 0x120
+ MX8MN_IOMUXC_ENET_RXC_GPIO1_IO25 0x120
+ MX8MN_IOMUXC_ENET_RX_CTL_GPIO1_IO24 0x120
+ MX8MN_IOMUXC_ENET_TX_CTL_GPIO1_IO22 0x120
+ MX8MN_IOMUXC_GPIO1_IO09_GPIO1_IO9 0x120
+ >;
+ };
+
+ pinctrl_i2c1: i2c1grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_I2C1_SCL_I2C1_SCL 0x400001c3
+ MX8MN_IOMUXC_I2C1_SDA_I2C1_SDA 0x400001c3
+ >;
+ };
+
+ pinctrl_i2c3: i2c3grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_I2C3_SCL_I2C3_SCL 0x400001c3
+ MX8MN_IOMUXC_I2C3_SDA_I2C3_SDA 0x400001c3
+ >;
+ };
+
+ pinctrl_pmic: pmicirqgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD1_DATA6_GPIO2_IO8 0x141
+ >;
+ };
+
+ pinctrl_reg_eth_phy: regethphygrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD1_DATA7_GPIO2_IO9 0x41
+ >;
+ };
+
+ pinctrl_restouch: restouchgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x1c0
+ >;
+ };
+
+ pinctrl_uart2: uart2grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SAI3_TXFS_UART2_DCE_RX 0x140
+ MX8MN_IOMUXC_SAI3_TXC_UART2_DCE_TX 0x140
+ MX8MN_IOMUXC_SAI3_RXC_UART2_DCE_CTS_B 0x140
+ MX8MN_IOMUXC_SAI3_RXD_UART2_DCE_RTS_B 0x140
+ >;
+ };
+
+ pinctrl_uart4: uart4grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_UART4_RXD_UART4_DCE_RX 0x140
+ MX8MN_IOMUXC_UART4_TXD_UART4_DCE_TX 0x140
+ >;
+ };
+
+ pinctrl_usdhc1: usdhc1grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK 0x190
+ MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD 0x1d0
+ MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0 0x1d0
+ MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1 0x1d0
+ MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2 0x1d0
+ MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3 0x1d0
+ >;
+ };
+
+ pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK 0x194
+ MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD 0x1d4
+ MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0 0x1d4
+ MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1 0x1d4
+ MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2 0x1d4
+ MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3 0x1d4
+ >;
+ };
+
+ pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK 0x196
+ MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD 0x1d6
+ MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0 0x1d6
+ MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1 0x1d6
+ MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2 0x1d6
+ MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3 0x1d6
+ >;
+ };
+
+ pinctrl_usdhc2_gpio: usdhc2gpiogrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_GPIO1_IO10_GPIO1_IO10 0x41
+ >;
+ };
+
+ pinctrl_usdhc2: usdhc2grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK 0x190
+ MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d0
+ MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d0
+ MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d0
+ MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d0
+ MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d0
+ MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
+ >;
+ };
+
+ pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK 0x194
+ MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d4
+ MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d4
+ MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d4
+ MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d4
+ MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4
+ MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
+ >;
+ };
+
+ pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK 0x196
+ MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d6
+ MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d6
+ MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d6
+ MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d6
+ MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d6
+ MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
+ >;
+ };
+
+ pinctrl_usdhc3: usdhc3grp {
+ fsl,pins = <
+ MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK 0x190
+ MX8MN_IOMUXC_NAND_WP_B_USDHC3_CMD 0x1d0
+ MX8MN_IOMUXC_NAND_DATA04_USDHC3_DATA0 0x1d0
+ MX8MN_IOMUXC_NAND_DATA05_USDHC3_DATA1 0x1d0
+ MX8MN_IOMUXC_NAND_DATA06_USDHC3_DATA2 0x1d0
+ MX8MN_IOMUXC_NAND_DATA07_USDHC3_DATA3 0x1d0
+ MX8MN_IOMUXC_NAND_RE_B_USDHC3_DATA4 0x1d0
+ MX8MN_IOMUXC_NAND_CE2_B_USDHC3_DATA5 0x1d0
+ MX8MN_IOMUXC_NAND_CE3_B_USDHC3_DATA6 0x1d0
+ MX8MN_IOMUXC_NAND_CLE_USDHC3_DATA7 0x1d0
+ MX8MN_IOMUXC_NAND_CE1_B_USDHC3_STROBE 0x190
+ >;
+ };
+
+ pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK 0x194
+ MX8MN_IOMUXC_NAND_WP_B_USDHC3_CMD 0x1d4
+ MX8MN_IOMUXC_NAND_DATA04_USDHC3_DATA0 0x1d4
+ MX8MN_IOMUXC_NAND_DATA05_USDHC3_DATA1 0x1d4
+ MX8MN_IOMUXC_NAND_DATA06_USDHC3_DATA2 0x1d4
+ MX8MN_IOMUXC_NAND_DATA07_USDHC3_DATA3 0x1d4
+ MX8MN_IOMUXC_NAND_RE_B_USDHC3_DATA4 0x1d4
+ MX8MN_IOMUXC_NAND_CE2_B_USDHC3_DATA5 0x1d4
+ MX8MN_IOMUXC_NAND_CE3_B_USDHC3_DATA6 0x1d4
+ MX8MN_IOMUXC_NAND_CLE_USDHC3_DATA7 0x1d4
+ MX8MN_IOMUXC_NAND_CE1_B_USDHC3_STROBE 0x194
+ >;
+ };
+
+ pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK 0x196
+ MX8MN_IOMUXC_NAND_WP_B_USDHC3_CMD 0x1d6
+ MX8MN_IOMUXC_NAND_DATA04_USDHC3_DATA0 0x1d6
+ MX8MN_IOMUXC_NAND_DATA05_USDHC3_DATA1 0x1d6
+ MX8MN_IOMUXC_NAND_DATA06_USDHC3_DATA2 0x1d6
+ MX8MN_IOMUXC_NAND_DATA07_USDHC3_DATA3 0x1d6
+ MX8MN_IOMUXC_NAND_RE_B_USDHC3_DATA4 0x1d6
+ MX8MN_IOMUXC_NAND_CE2_B_USDHC3_DATA5 0x1d6
+ MX8MN_IOMUXC_NAND_CE3_B_USDHC3_DATA6 0x1d6
+ MX8MN_IOMUXC_NAND_CLE_USDHC3_DATA7 0x1d6
+ MX8MN_IOMUXC_NAND_CE1_B_USDHC3_STROBE 0x196
+ >;
+ };
+
+ pinctrl_wdog: wdoggrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0x166
+ >;
+ };
+};
diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
index 276b8bd9742..82a5ab8ad00 100644
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -108,6 +108,14 @@ config TARGET_PICO_IMX8MQ
select IMX8MQ
select IMX8M_LPDDR4
+config TARGET_IMX8MN_VAR_SOM
+ bool "imx8mn_var_som"
+ select BINMAN
+ select IMX8MN
+ select SUPPORT_SPL
+ select IMX8M_DDR4
+ select IMX8M_BOARD_INIT_DRAM
+
config TARGET_VERDIN_IMX8MM
bool "Support Toradex Verdin iMX8M Mini module"
select BINMAN
@@ -171,6 +179,7 @@ source "board/phytec/phycore_imx8mm/Kconfig"
source "board/phytec/phycore_imx8mp/Kconfig"
source "board/ronetix/imx8mq-cm/Kconfig"
source "board/technexion/pico-imx8mq/Kconfig"
+source "board/variscite/imx8mn_var_som/Kconfig"
source "board/toradex/verdin-imx8mm/Kconfig"
endif
diff --git a/board/variscite/imx8mn_var_som/Kconfig b/board/variscite/imx8mn_var_som/Kconfig
new file mode 100644
index 00000000000..cfe6fc8c2c7
--- /dev/null
+++ b/board/variscite/imx8mn_var_som/Kconfig
@@ -0,0 +1,17 @@
+if TARGET_IMX8MN_VAR_SOM
+
+config SYS_BOARD
+ default "imx8mn_var_som"
+
+config SYS_VENDOR
+ default "variscite"
+
+config SYS_CONFIG_NAME
+ default "imx8mn_var_som"
+
+config IMX_CONFIG
+ default "board/variscite/imx8mn_var_som/imximage-8mn-ddr4.cfg"
+
+source "board/freescale/common/Kconfig"
+
+endif
diff --git a/board/variscite/imx8mn_var_som/MAINTAINERS b/board/variscite/imx8mn_var_som/MAINTAINERS
new file mode 100644
index 00000000000..993bcfbf476
--- /dev/null
+++ b/board/variscite/imx8mn_var_som/MAINTAINERS
@@ -0,0 +1,7 @@
+ARM i.MX8MN VARISCITE VAR-SOM-MX8MN MODULE
+M: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
+S: Maintained
+F: arch/arm/dts/arch/arm/dts/imx8mn-var-som*
+F: board/variscite/imx8mn_var_som/
+F: configs/imx8mn_var_som_defconfig
+F: include/configs/imx8mn_var_som.h
diff --git a/board/variscite/imx8mn_var_som/Makefile b/board/variscite/imx8mn_var_som/Makefile
new file mode 100644
index 00000000000..a8b6a343ffc
--- /dev/null
+++ b/board/variscite/imx8mn_var_som/Makefile
@@ -0,0 +1,12 @@
+#
+# Copyright 2021 Collabora Ltd.
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y += imx8mn_var_som.o
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl.o
+obj-y += ddr4_timing.o
+endif
diff --git a/board/variscite/imx8mn_var_som/ddr4_timing.c b/board/variscite/imx8mn_var_som/ddr4_timing.c
new file mode 100644
index 00000000000..0ed69eeb3de
--- /dev/null
+++ b/board/variscite/imx8mn_var_som/ddr4_timing.c
@@ -0,0 +1,528 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 NXP
+ *
+ * Generated code from MX8M_DDR_tool
+ * Align with uboot version:
+ * imx_v2018.03_4.14.78_1.0.0_ga ~ imx_v2018.04_4.19.35_1.0.0_ga
+ */
+
+#include <linux/kernel.h>
+#include <asm/arch/ddr.h>
+
+static struct dram_cfg_param ddr_ddrc_cfg[] = {
+ /** Initialize DDRC registers **/
+ { 0x3d400000, 0x81040010 },
+ { 0x3d400030, 0x20 },
+ { 0x3d400034, 0x221306 },
+ { 0x3d400050, 0x210070 },
+ { 0x3d400054, 0x10008 },
+ { 0x3d400060, 0x0 },
+ { 0x3d400064, 0x9200d2 },
+ { 0x3d4000c0, 0x0 },
+ { 0x3d4000c4, 0x1000 },
+ { 0x3d4000d0, 0xc0030126 },
+ { 0x3d4000d4, 0x770000 },
+ { 0x3d4000dc, 0x8340105 },
+ { 0x3d4000e0, 0x180200 },
+ { 0x3d4000e4, 0x110000 },
+ { 0x3d4000e8, 0x2000600 },
+ { 0x3d4000ec, 0x810 },
+ { 0x3d4000f0, 0x20 },
+ { 0x3d4000f4, 0xec7 },
+ { 0x3d400100, 0x11122914 },
+ { 0x3d400104, 0x4051c },
+ { 0x3d400108, 0x608050d },
+ { 0x3d40010c, 0x400c },
+ { 0x3d400110, 0x8030409 },
+ { 0x3d400114, 0x6060403 },
+ { 0x3d40011c, 0x606 },
+ { 0x3d400120, 0x5050d08 },
+ { 0x3d400124, 0x2040a },
+ { 0x3d40012c, 0x1409010e },
+ { 0x3d400130, 0x8 },
+ { 0x3d40013c, 0x0 },
+ { 0x3d400180, 0x1000040 },
+ { 0x3d400184, 0x493e },
+ { 0x3d400190, 0x38b8207 },
+ { 0x3d400194, 0x2020303 },
+ { 0x3d400198, 0x7f04011 },
+ { 0x3d40019c, 0xb0 },
+ { 0x3d4001a0, 0xe0400018 },
+ { 0x3d4001a4, 0x48005a },
+ { 0x3d4001a8, 0x80000000 },
+ { 0x3d4001b0, 0x1 },
+ { 0x3d4001b4, 0xb07 },
+ { 0x3d4001b8, 0x4 },
+ { 0x3d4001c0, 0x1 },
+ { 0x3d4001c4, 0x0 },
+ { 0x3d400200, 0x3f1f },
+ { 0x3d400204, 0x3f0909 },
+ { 0x3d400208, 0x700 },
+ { 0x3d40020c, 0x0 },
+ { 0x3d400210, 0x1f1f },
+ { 0x3d400214, 0x7070707 },
+ { 0x3d400218, 0x7070707 },
+ { 0x3d40021c, 0xf0f },
+ { 0x3d400220, 0x3f01 },
+ { 0x3d400240, 0x6000610 },
+ { 0x3d400244, 0x1323 },
+ { 0x3d400400, 0x100 },
+ { 0x3d400250, 0x317d1a07 },
+ { 0x3d400254, 0xf },
+ { 0x3d40025c, 0x2a001b76 },
+ { 0x3d400264, 0x7300b473 },
+ { 0x3d40026c, 0x30000e06 },
+ { 0x3d400300, 0x14 },
+ { 0x3d40036c, 0x10 },
+ { 0x3d400404, 0x13193 },
+ { 0x3d400408, 0x6096 },
+ { 0x3d400490, 0x1 },
+ { 0x3d400494, 0x2000c00 },
+ { 0x3d400498, 0x3c00db },
+ { 0x3d40049c, 0x100009 },
+ { 0x3d4004a0, 0x2 },
+ { 0x3d402050, 0x210070 },
+ { 0x3d402064, 0x40005e },
+ { 0x3d4020dc, 0x40105 },
+ { 0x3d4020e0, 0x0 },
+ { 0x3d4020e8, 0x2000600 },
+ { 0x3d4020ec, 0x10 },
+ { 0x3d402100, 0xb081209 },
+ { 0x3d402104, 0x2020d },
+ { 0x3d402108, 0x5050309 },
+ { 0x3d40210c, 0x400c },
+ { 0x3d402110, 0x5030206 },
+ { 0x3d402114, 0x3030202 },
+ { 0x3d40211c, 0x303 },
+ { 0x3d402120, 0x3030d04 },
+ { 0x3d402124, 0x20208 },
+ { 0x3d40212c, 0x1005010e },
+ { 0x3d402130, 0x8 },
+ { 0x3d40213c, 0x0 },
+ { 0x3d402180, 0x1000040 },
+ { 0x3d402190, 0x3858204 },
+ { 0x3d402194, 0x2020303 },
+ { 0x3d4021b4, 0x504 },
+ { 0x3d4021b8, 0x4 },
+ { 0x3d402240, 0x6000604 },
+ { 0x3d4020f4, 0xec7 },
+};
+
+/* PHY Initialize Configuration */
+static struct dram_cfg_param ddr_ddrphy_cfg[] = {
+ { 0x1005f, 0x2fd },
+ { 0x1015f, 0x2fd },
+ { 0x1105f, 0x2fd },
+ { 0x1115f, 0x2fd },
+ { 0x11005f, 0x2fd },
+ { 0x11015f, 0x2fd },
+ { 0x11105f, 0x2fd },
+ { 0x11115f, 0x2fd },
+ { 0x55, 0x355 },
+ { 0x1055, 0x355 },
+ { 0x2055, 0x355 },
+ { 0x3055, 0x355 },
+ { 0x4055, 0x55 },
+ { 0x5055, 0x55 },
+ { 0x6055, 0x355 },
+ { 0x7055, 0x355 },
+ { 0x8055, 0x355 },
+ { 0x9055, 0x355 },
+ { 0x200c5, 0xa },
+ { 0x1200c5, 0x6 },
+ { 0x2002e, 0x2 },
+ { 0x12002e, 0x1 },
+ { 0x20024, 0x8 },
+ { 0x2003a, 0x2 },
+ { 0x120024, 0x8 },
+ { 0x2003a, 0x2 },
+ { 0x20056, 0x6 },
+ { 0x120056, 0xa },
+ { 0x1004d, 0x1a },
+ { 0x1014d, 0x1a },
+ { 0x1104d, 0x1a },
+ { 0x1114d, 0x1a },
+ { 0x11004d, 0x1a },
+ { 0x11014d, 0x1a },
+ { 0x11104d, 0x1a },
+ { 0x11114d, 0x1a },
+ { 0x10049, 0xe38 },
+ { 0x10149, 0xe38 },
+ { 0x11049, 0xe38 },
+ { 0x11149, 0xe38 },
+ { 0x110049, 0xe38 },
+ { 0x110149, 0xe38 },
+ { 0x111049, 0xe38 },
+ { 0x111149, 0xe38 },
+ { 0x43, 0x63 },
+ { 0x1043, 0x63 },
+ { 0x2043, 0x63 },
+ { 0x3043, 0x63 },
+ { 0x4043, 0x63 },
+ { 0x5043, 0x63 },
+ { 0x6043, 0x63 },
+ { 0x7043, 0x63 },
+ { 0x8043, 0x63 },
+ { 0x9043, 0x63 },
+ { 0x20018, 0x1 },
+ { 0x20075, 0x2 },
+ { 0x20050, 0x0 },
+ { 0x20008, 0x258 },
+ { 0x120008, 0x10a },
+ { 0x20088, 0x9 },
+ { 0x200b2, 0x268 },
+ { 0x10043, 0x5b1 },
+ { 0x10143, 0x5b1 },
+ { 0x11043, 0x5b1 },
+ { 0x11143, 0x5b1 },
+ { 0x1200b2, 0x268 },
+ { 0x110043, 0x5b1 },
+ { 0x110143, 0x5b1 },
+ { 0x111043, 0x5b1 },
+ { 0x111143, 0x5b1 },
+ { 0x200fa, 0x1 },
+ { 0x1200fa, 0x1 },
+ { 0x20019, 0x5 },
+ { 0x120019, 0x5 },
+ { 0x200f0, 0x5555 },
+ { 0x200f1, 0x5555 },
+ { 0x200f2, 0x5555 },
+ { 0x200f3, 0x5555 },
+ { 0x200f4, 0x5555 },
+ { 0x200f5, 0x5555 },
+ { 0x200f6, 0x5555 },
+ { 0x200f7, 0xf000 },
+ { 0x20025, 0x0 },
+ { 0x2002d, 0x0 },
+ { 0x12002d, 0x0 },
+ { 0x2005b, 0x7529 },
+ { 0x2005c, 0x0 },
+ { 0x200c7, 0x21 },
+ { 0x200ca, 0x24 },
+ { 0x200cc, 0x1f7 },
+ { 0x1200c7, 0x21 },
+ { 0x1200ca, 0x24 },
+ { 0x1200cc, 0x1f7 },
+ { 0x2007d, 0x212 },
+ { 0x12007d, 0x212 },
+ { 0x2007c, 0x61 },
+ { 0x12007c, 0x61 },
+ { 0x1004a, 0x500 },
+ { 0x1104a, 0x500 },
+ { 0x2002c, 0x0 },
+};
+
+/* P0 message block parameter for training firmware */
+static struct dram_cfg_param ddr_fsp0_cfg[] = {
+ { 0xd0000, 0x0 },
+ { 0x54003, 0x960 },
+ { 0x54004, 0x2 },
+ { 0x54005, 0x2830 },
+ { 0x54006, 0x25e },
+ { 0x54007, 0x1000 },
+ { 0x54008, 0x101 },
+ { 0x5400b, 0x31f },
+ { 0x5400c, 0xc8 },
+ { 0x5400d, 0x100 },
+ { 0x54012, 0x1 },
+ { 0x5402f, 0x834 },
+ { 0x54030, 0x105 },
+ { 0x54031, 0x18 },
+ { 0x54032, 0x200 },
+ { 0x54033, 0x200 },
+ { 0x54034, 0x600 },
+ { 0x54035, 0x810 },
+ { 0x54036, 0x101 },
+ { 0x5403f, 0x1221 },
+ { 0x541fc, 0x100 },
+ { 0xd0000, 0x1 },
+};
+
+/* P1 message block parameter for training firmware */
+static struct dram_cfg_param ddr_fsp1_cfg[] = {
+ { 0xd0000, 0x0 },
+ { 0x54002, 0x1 },
+ { 0x54003, 0x42a },
+ { 0x54004, 0x2 },
+ { 0x54005, 0x2830 },
+ { 0x54006, 0x25e },
+ { 0x54007, 0x1000 },
+ { 0x54008, 0x101 },
+ { 0x5400b, 0x21f },
+ { 0x5400c, 0xc8 },
+ { 0x5400d, 0x100 },
+ { 0x54012, 0x1 },
+ { 0x5402f, 0x4 },
+ { 0x54030, 0x105 },
+ { 0x54033, 0x200 },
+ { 0x54034, 0x600 },
+ { 0x54035, 0x10 },
+ { 0x54036, 0x101 },
+ { 0x5403f, 0x1221 },
+ { 0x541fc, 0x100 },
+ { 0xd0000, 0x1 },
+};
+
+/* P0 2D message block parameter for training firmware */
+static struct dram_cfg_param ddr_fsp0_2d_cfg[] = {
+ { 0xd0000, 0x0 },
+ { 0x54003, 0x960 },
+ { 0x54004, 0x2 },
+ { 0x54005, 0x2830 },
+ { 0x54006, 0x25e },
+ { 0x54007, 0x1000 },
+ { 0x54008, 0x101 },
+ { 0x5400b, 0x61 },
+ { 0x5400c, 0xc8 },
+ { 0x5400d, 0x100 },
+ { 0x5400e, 0x1f7f },
+ { 0x54012, 0x1 },
+ { 0x5402f, 0x834 },
+ { 0x54030, 0x105 },
+ { 0x54031, 0x18 },
+ { 0x54032, 0x200 },
+ { 0x54033, 0x200 },
+ { 0x54034, 0x600 },
+ { 0x54035, 0x810 },
+ { 0x54036, 0x101 },
+ { 0x5403f, 0x1221 },
+ { 0x541fc, 0x100 },
+ { 0xd0000, 0x1 },
+};
+
+/* DRAM PHY init engine image */
+static struct dram_cfg_param ddr_phy_pie[] = {
+ { 0xd0000, 0x0 },
+ { 0x90000, 0x10 },
+ { 0x90001, 0x400 },
+ { 0x90002, 0x10e },
+ { 0x90003, 0x0 },
+ { 0x90004, 0x0 },
+ { 0x90005, 0x8 },
+ { 0x90029, 0xb },
+ { 0x9002a, 0x480 },
+ { 0x9002b, 0x109 },
+ { 0x9002c, 0x8 },
+ { 0x9002d, 0x448 },
+ { 0x9002e, 0x139 },
+ { 0x9002f, 0x8 },
+ { 0x90030, 0x478 },
+ { 0x90031, 0x109 },
+ { 0x90032, 0x2 },
+ { 0x90033, 0x10 },
+ { 0x90034, 0x139 },
+ { 0x90035, 0xb },
+ { 0x90036, 0x7c0 },
+ { 0x90037, 0x139 },
+ { 0x90038, 0x44 },
+ { 0x90039, 0x633 },
+ { 0x9003a, 0x159 },
+ { 0x9003b, 0x14f },
+ { 0x9003c, 0x630 },
+ { 0x9003d, 0x159 },
+ { 0x9003e, 0x47 },
+ { 0x9003f, 0x633 },
+ { 0x90040, 0x149 },
+ { 0x90041, 0x4f },
+ { 0x90042, 0x633 },
+ { 0x90043, 0x179 },
+ { 0x90044, 0x8 },
+ { 0x90045, 0xe0 },
+ { 0x90046, 0x109 },
+ { 0x90047, 0x0 },
+ { 0x90048, 0x7c8 },
+ { 0x90049, 0x109 },
+ { 0x9004a, 0x0 },
+ { 0x9004b, 0x1 },
+ { 0x9004c, 0x8 },
+ { 0x9004d, 0x0 },
+ { 0x9004e, 0x45a },
+ { 0x9004f, 0x9 },
+ { 0x90050, 0x0 },
+ { 0x90051, 0x448 },
+ { 0x90052, 0x109 },
+ { 0x90053, 0x40 },
+ { 0x90054, 0x633 },
+ { 0x90055, 0x179 },
+ { 0x90056, 0x1 },
+ { 0x90057, 0x618 },
+ { 0x90058, 0x109 },
+ { 0x90059, 0x40c0 },
+ { 0x9005a, 0x633 },
+ { 0x9005b, 0x149 },
+ { 0x9005c, 0x8 },
+ { 0x9005d, 0x4 },
+ { 0x9005e, 0x48 },
+ { 0x9005f, 0x4040 },
+ { 0x90060, 0x633 },
+ { 0x90061, 0x149 },
+ { 0x90062, 0x0 },
+ { 0x90063, 0x4 },
+ { 0x90064, 0x48 },
+ { 0x90065, 0x40 },
+ { 0x90066, 0x633 },
+ { 0x90067, 0x149 },
+ { 0x90068, 0x10 },
+ { 0x90069, 0x4 },
+ { 0x9006a, 0x18 },
+ { 0x9006b, 0x0 },
+ { 0x9006c, 0x4 },
+ { 0x9006d, 0x78 },
+ { 0x9006e, 0x549 },
+ { 0x9006f, 0x633 },
+ { 0x90070, 0x159 },
+ { 0x90071, 0xd49 },
+ { 0x90072, 0x633 },
+ { 0x90073, 0x159 },
+ { 0x90074, 0x94a },
+ { 0x90075, 0x633 },
+ { 0x90076, 0x159 },
+ { 0x90077, 0x441 },
+ { 0x90078, 0x633 },
+ { 0x90079, 0x149 },
+ { 0x9007a, 0x42 },
+ { 0x9007b, 0x633 },
+ { 0x9007c, 0x149 },
+ { 0x9007d, 0x1 },
+ { 0x9007e, 0x633 },
+ { 0x9007f, 0x149 },
+ { 0x90080, 0x0 },
+ { 0x90081, 0xe0 },
+ { 0x90082, 0x109 },
+ { 0x90083, 0xa },
+ { 0x90084, 0x10 },
+ { 0x90085, 0x109 },
+ { 0x90086, 0x9 },
+ { 0x90087, 0x3c0 },
+ { 0x90088, 0x149 },
+ { 0x90089, 0x9 },
+ { 0x9008a, 0x3c0 },
+ { 0x9008b, 0x159 },
+ { 0x9008c, 0x18 },
+ { 0x9008d, 0x10 },
+ { 0x9008e, 0x109 },
+ { 0x9008f, 0x0 },
+ { 0x90090, 0x3c0 },
+ { 0x90091, 0x109 },
+ { 0x90092, 0x18 },
+ { 0x90093, 0x4 },
+ { 0x90094, 0x48 },
+ { 0x90095, 0x18 },
+ { 0x90096, 0x4 },
+ { 0x90097, 0x58 },
+ { 0x90098, 0xb },
+ { 0x90099, 0x10 },
+ { 0x9009a, 0x109 },
+ { 0x9009b, 0x1 },
+ { 0x9009c, 0x10 },
+ { 0x9009d, 0x109 },
+ { 0x9009e, 0x5 },
+ { 0x9009f, 0x7c0 },
+ { 0x900a0, 0x109 },
+ { 0x900a1, 0x0 },
+ { 0x900a2, 0x8140 },
+ { 0x900a3, 0x10c },
+ { 0x900a4, 0x10 },
+ { 0x900a5, 0x8138 },
+ { 0x900a6, 0x10c },
+ { 0x900a7, 0x8 },
+ { 0x900a8, 0x7c8 },
+ { 0x900a9, 0x101 },
+ { 0x900aa, 0x8 },
+ { 0x900ab, 0x448 },
+ { 0x900ac, 0x109 },
+ { 0x900ad, 0xf },
+ { 0x900ae, 0x7c0 },
+ { 0x900af, 0x109 },
+ { 0x900b0, 0x47 },
+ { 0x900b1, 0x630 },
+ { 0x900b2, 0x109 },
+ { 0x900b3, 0x8 },
+ { 0x900b4, 0x618 },
+ { 0x900b5, 0x109 },
+ { 0x900b6, 0x8 },
+ { 0x900b7, 0xe0 },
+ { 0x900b8, 0x109 },
+ { 0x900b9, 0x0 },
+ { 0x900ba, 0x7c8 },
+ { 0x900bb, 0x109 },
+ { 0x900bc, 0x8 },
+ { 0x900bd, 0x8140 },
+ { 0x900be, 0x10c },
+ { 0x900bf, 0x0 },
+ { 0x900c0, 0x1 },
+ { 0x900c1, 0x8 },
+ { 0x900c2, 0x8 },
+ { 0x900c3, 0x4 },
+ { 0x900c4, 0x8 },
+ { 0x900c5, 0x8 },
+ { 0x900c6, 0x7c8 },
+ { 0x900c7, 0x101 },
+ { 0x90006, 0x0 },
+ { 0x90007, 0x0 },
+ { 0x90008, 0x8 },
+ { 0x90009, 0x0 },
+ { 0x9000a, 0x0 },
+ { 0x9000b, 0x0 },
+ { 0xd00e7, 0x400 },
+ { 0x90017, 0x0 },
+ { 0x90026, 0x2b },
+ { 0x2000b, 0x4b },
+ { 0x2000c, 0x96 },
+ { 0x2000d, 0x5dc },
+ { 0x2000e, 0x2c },
+ { 0x12000b, 0x21 },
+ { 0x12000c, 0x42 },
+ { 0x12000d, 0x29a },
+ { 0x12000e, 0x21 },
+ { 0x9000c, 0x0 },
+ { 0x9000d, 0x173 },
+ { 0x9000e, 0x60 },
+ { 0x9000f, 0x6110 },
+ { 0x90010, 0x2152 },
+ { 0x90011, 0xdfbd },
+ { 0x90012, 0xffff },
+ { 0x90013, 0x6152 },
+ { 0x20089, 0x1 },
+ { 0x20088, 0x19 },
+ { 0xc0080, 0x0 },
+ { 0xd0000, 0x1 },
+};
+
+static struct dram_fsp_msg ddr_dram_fsp_msg[] = {
+ {
+ /* P0 2400mts 1D */
+ .drate = 2400,
+ .fw_type = FW_1D_IMAGE,
+ .fsp_cfg = ddr_fsp0_cfg,
+ .fsp_cfg_num = ARRAY_SIZE(ddr_fsp0_cfg),
+ },
+ {
+ /* P1 1066mts 1D */
+ .drate = 1066,
+ .fw_type = FW_1D_IMAGE,
+ .fsp_cfg = ddr_fsp1_cfg,
+ .fsp_cfg_num = ARRAY_SIZE(ddr_fsp1_cfg),
+ },
+ {
+ /* P0 2400mts 2D */
+ .drate = 2400,
+ .fw_type = FW_2D_IMAGE,
+ .fsp_cfg = ddr_fsp0_2d_cfg,
+ .fsp_cfg_num = ARRAY_SIZE(ddr_fsp0_2d_cfg),
+ },
+};
+
+/* ddr timing config params */
+struct dram_timing_info dram_timing = {
+ .ddrc_cfg = ddr_ddrc_cfg,
+ .ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg),
+ .ddrphy_cfg = ddr_ddrphy_cfg,
+ .ddrphy_cfg_num = ARRAY_SIZE(ddr_ddrphy_cfg),
+ .fsp_msg = ddr_dram_fsp_msg,
+ .fsp_msg_num = ARRAY_SIZE(ddr_dram_fsp_msg),
+ .ddrphy_pie = ddr_phy_pie,
+ .ddrphy_pie_num = ARRAY_SIZE(ddr_phy_pie),
+ .fsp_table = { 2400, 1066, },
+};
diff --git a/board/variscite/imx8mn_var_som/imx8mn_var_som.c b/board/variscite/imx8mn_var_som/imx8mn_var_som.c
new file mode 100644
index 00000000000..e274e0e0a4c
--- /dev/null
+++ b/board/variscite/imx8mn_var_som/imx8mn_var_som.c
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Collabora Ltd.
+ */
+
+#include <common.h>
+#include <env.h>
+#include <asm/io.h>
+
+static void setup_fec(void)
+{
+ struct iomuxc_gpr_base_regs *gpr =
+ (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
+
+ /* Use 125M anatop REF_CLK1 for ENET1, not from external */
+ clrsetbits_le32(&gpr->gpr[1], 0x2000, 0);
+}
+
+int board_init(void)
+{
+ if (CONFIG_IS_ENABLED(FEC_MXC))
+ setup_fec();
+
+ return 0;
+}
+
+int board_mmc_get_env_dev(int devno)
+{
+ return devno;
+}
diff --git a/board/variscite/imx8mn_var_som/imximage-8mn-ddr4.cfg b/board/variscite/imx8mn_var_som/imximage-8mn-ddr4.cfg
new file mode 100644
index 00000000000..2083233e500
--- /dev/null
+++ b/board/variscite/imx8mn_var_som/imximage-8mn-ddr4.cfg
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Collabora Ltd.
+ */
+
+#define __ASSEMBLY__
+
+ROM_VERSION v2
+BOOT_FROM sd
+LOADER u-boot-spl-ddr.bin 0x912000
diff --git a/board/variscite/imx8mn_var_som/spl.c b/board/variscite/imx8mn_var_som/spl.c
new file mode 100644
index 00000000000..32703c5f0b3
--- /dev/null
+++ b/board/variscite/imx8mn_var_som/spl.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Collabora Ltd.
+ *
+ */
+
+#include <hang.h>
+#include <init.h>
+#include <spl.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/ddr.h>
+#include <asm/arch/imx8mn_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/gpio.h>
+#include <dm/device.h>
+#include <dm/uclass.h>
+
+int spl_board_boot_device(enum boot_device boot_dev_spl)
+{
+ return BOOT_DEVICE_BOOTROM;
+}
+
+void spl_dram_init(void)
+{
+ ddr_init(&dram_timing);
+}
+
+void spl_board_init(void)
+{
+ struct udevice *dev;
+ int ret;
+
+ debug("Normal Boot\n");
+
+ ret = uclass_get_device_by_name(UCLASS_CLK,
+ "clock-controller@30380000",
+ &dev);
+ if (ret < 0)
+ puts("Failed to find clock node. Check device tree\n");
+}
+
+#define UART_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_FSEL1)
+#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
+
+static const iomux_v3_cfg_t uart_pads[] = {
+ IMX8MN_PAD_UART4_RXD__UART4_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+ IMX8MN_PAD_UART4_TXD__UART4_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static const iomux_v3_cfg_t wdog_pads[] = {
+ IMX8MN_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
+};
+
+int board_early_init_f(void)
+{
+ struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+
+ imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
+ set_wdog_reset(wdog);
+
+ imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
+ init_uart_clk(3);
+
+ return 0;
+}
+
+void board_init_f(ulong dummy)
+{
+ int ret;
+
+ /* Clear the BSS. */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ arch_cpu_init();
+
+ board_early_init_f();
+
+ timer_init();
+
+ preloader_console_init();
+
+ ret = spl_init();
+ if (ret) {
+ debug("spl_init() failed: %d\n", ret);
+ hang();
+ }
+
+ /* DDR initialization */
+ spl_dram_init();
+
+ board_init_r(NULL, 0);
+}
diff --git a/configs/imx8mn_var_som_defconfig b/configs/imx8mn_var_som_defconfig
new file mode 100644
index 00000000000..16241c5f0aa
--- /dev/null
+++ b/configs/imx8mn_var_som_defconfig
@@ -0,0 +1,98 @@
+CONFIG_ARM=y
+CONFIG_ARCH_IMX8M=y
+CONFIG_SYS_TEXT_BASE=0x40200000
+CONFIG_SYS_MALLOC_LEN=0x2000000
+CONFIG_SYS_MALLOC_F_LEN=0x10000
+CONFIG_SPL_GPIO=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x2000
+CONFIG_ENV_OFFSET=0xFFFFDE00
+CONFIG_DM_GPIO=y
+CONFIG_DEFAULT_DEVICE_TREE="imx8mn-var-som-symphony"
+CONFIG_SPL_TEXT_BASE=0x912000
+CONFIG_TARGET_IMX8MN_VAR_SOM=y
+CONFIG_SPL_MMC=y
+CONFIG_SPL_SERIAL=y
+CONFIG_SPL_DRIVERS_MISC=y
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x2000
+CONFIG_SPL=y
+CONFIG_SPL_IMX_ROMAPI_LOADADDR=0x48000000
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_SYS_LOAD_ADDR=0x40480000
+CONFIG_FIT=y
+CONFIG_FIT_EXTERNAL_OFFSET=0x3000
+CONFIG_SPL_LOAD_FIT=y
+# CONFIG_USE_SPL_FIT_GENERATOR is not set
+CONFIG_OF_SYSTEM_SETUP=y
+CONFIG_DEFAULT_FDT_FILE="freescale/imx8mn-var-som-symphony.dtb"
+CONFIG_ARCH_MISC_INIT=y
+CONFIG_SPL_BOARD_INIT=y
+CONFIG_SPL_BOOTROM_SUPPORT=y
+CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_I2C=y
+CONFIG_SPL_POWER=y
+CONFIG_SPL_WATCHDOG=y
+CONFIG_SYS_PROMPT="> "
+CONFIG_CMD_FUSE=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+CONFIG_OF_CONTROL=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_SYS_MMC_ENV_DEV=2
+CONFIG_SYS_MMC_ENV_PART=1
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_SPL_DM=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_SPL_CLK_COMPOSITE_CCF=y
+CONFIG_CLK_COMPOSITE_CCF=y
+CONFIG_SPL_CLK_IMX8MN=y
+CONFIG_CLK_IMX8MN=y
+CONFIG_USB_FUNCTION_FASTBOOT=y
+CONFIG_FASTBOOT_BUF_ADDR=0x40480000
+CONFIG_FASTBOOT_BUF_SIZE=0x20000000
+CONFIG_FASTBOOT_FLASH=y
+CONFIG_FASTBOOT_UUU_SUPPORT=y
+CONFIG_FASTBOOT_FLASH_MMC_DEV=2
+CONFIG_MXC_GPIO=y
+CONFIG_DM_I2C=y
+CONFIG_SUPPORT_EMMC_BOOT=y
+CONFIG_MMC_IO_VOLTAGE=y
+CONFIG_MMC_UHS_SUPPORT=y
+CONFIG_MMC_HS400_ES_SUPPORT=y
+CONFIG_MMC_HS400_SUPPORT=y
+CONFIG_FSL_ESDHC_IMX=y
+CONFIG_PHYLIB=y
+CONFIG_PHY_ATHEROS=y
+CONFIG_DM_ETH=y
+CONFIG_PHY_GIGE=y
+CONFIG_FEC_MXC=y
+CONFIG_MII=y
+CONFIG_PINCTRL=y
+CONFIG_SPL_PINCTRL=y
+CONFIG_PINCTRL_IMX8M=y
+CONFIG_DM_PMIC=y
+CONFIG_DM_PMIC_BD71837=y
+CONFIG_SPL_DM_PMIC_BD71837=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_MXC_UART=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
+CONFIG_SYSRESET_WATCHDOG=y
+CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="FSL"
+CONFIG_USB_GADGET_VENDOR_NUM=0x0525
+CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
+CONFIG_CI_UDC=y
+CONFIG_IMX_WATCHDOG=y
+CONFIG_OF_LIBFDT_OVERLAY=y
diff --git a/include/configs/imx8mn_var_som.h b/include/configs/imx8mn_var_som.h
new file mode 100644
index 00000000000..c6e8b2e6d9f
--- /dev/null
+++ b/include/configs/imx8mn_var_som.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Collabora Ltd.
+ */
+
+#ifndef __IMX8MN_VAR_SOM_H
+#define __IMX8MN_VAR_SOM_H
+
+#include <linux/sizes.h>
+#include <linux/stringify.h>
+#include <asm/arch/imx-regs.h>
+
+#define CONFIG_SYS_BOOTM_LEN (32 * SZ_1M)
+
+#define CONFIG_SPL_MAX_SIZE (148 * SZ_1K)
+#define CONFIG_SYS_MONITOR_LEN SZ_512K
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x300
+#define CONFIG_SYS_UBOOT_BASE \
+ (QSPI0_AMBA_BASE + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512)
+
+#define CONFIG_SPL_STACK 0x980000
+#define CONFIG_SPL_BSS_START_ADDR 0x950000
+#define CONFIG_SPL_BSS_MAX_SIZE SZ_8K
+#define CONFIG_SYS_SPL_MALLOC_START 0x42200000
+#define CONFIG_SYS_SPL_MALLOC_SIZE SZ_512K
+
+#define BOOT_TARGET_DEVICES(func) \
+ func(MMC, mmc, 1) \
+ func(MMC, mmc, 2) \
+ func(MMC, mmc, 0) \
+ func(PXE, pxe, na) \
+ func(DHCP, dhcp, na) \
+
+#include <config_distro_bootcmd.h>
+
+/* ENET */
+#if defined(CONFIG_FEC_MXC)
+#define CONFIG_ETHPRIME "FEC"
+#define CONFIG_FEC_XCV_TYPE RGMII
+#endif /* CONFIG_FEC_MXC */
+
+#define MEM_LAYOUT_ENV_SETTINGS \
+ "scriptaddr=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
+ "kernel_addr_r=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
+ "ramdisk_addr_r=0x43800000\0" \
+ "fdt_addr_r=0x43000000\0" \
+ "fdtfile=" CONFIG_DEFAULT_FDT_FILE "\0" \
+ "fastboot_partition_alias_all=" \
+ __stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV) ".0:0\0" \
+ "fastboot_partition_alias_bootloader=" \
+ __stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV) ".1:0\0" \
+ "emmc_dev=" __stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV) "\0" \
+ "emmc_ack=1\0" \
+ "pxefile_addr_r=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
+
+/* Initial environment variables */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ MEM_LAYOUT_ENV_SETTINGS \
+ BOOTENV
+
+/* Link Definitions */
+
+#define CONFIG_SYS_INIT_RAM_ADDR 0x40000000
+#define CONFIG_SYS_INIT_RAM_SIZE SZ_512K
+#define CONFIG_SYS_INIT_SP_OFFSET \
+ (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR \
+ (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+
+#define CONFIG_SYS_SDRAM_BASE 0x40000000
+#define PHYS_SDRAM 0x40000000
+#define PHYS_SDRAM_SIZE SZ_1G /* 1GB DDR */
+
+#define CONFIG_BAUDRATE 115200
+
+#define CONFIG_MXC_UART_BASE UART4_BASE_ADDR
+
+/* Monitor Command Prompt */
+#define CONFIG_SYS_CBSIZE SZ_2K
+#define CONFIG_SYS_MAXARGS 64
+#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
+#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
+ sizeof(CONFIG_SYS_PROMPT) + 16)
+
+/* USDHC */
+#define CONFIG_FSL_USDHC
+
+#define CONFIG_SYS_FSL_USDHC_NUM 2
+#define CONFIG_SYS_FSL_ESDHC_ADDR 0
+
+/* I2C */
+#define CONFIG_SYS_I2C_SPEED 400000
+
+#endif /* __IMX8MN_VAR_SOM_H */
--
2.30.2
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