[PATCH v4 2/2] arm64: dts: add support for NXP i.MX8MP FRDM board

Rogerio Pimentel
2025-11-09T21:45:35Z

The FRDM-i.MX8MP is an NXP development platform based on the i.MX8M Plus
SoC, featuring a quad Cortex-A53, Cortex-M7 co-processor, 4GB LPDDR4,
32GB eMMC, Wi-Fi 6/Bluetooth 5.4/802.15.4 tri-radio, Ethernet, HDMI/MIPI
display interfaces, camera connectors, and standard expansion headers.

Based on the device tree found in the NXP repository at github
https://github.com/nxp-imx-support/meta-imx-frdm and on imx8mp-evk
board kernel mainline device tree.

This is a basic device tree supporting:

- Quad Cortex-A53
- 4GB LPDDR4 DRAM
- PCA9450C PMIC with regulators
- Two NXP PCAL6416 GPIO expanders
- RGB LEDs via GPIO expander
- I2C1, I2C2, I2C3 controllers
- UART2 (console) and UART3 (with RTS/CTS)
- USDHC3 (8-bit eMMC)
- SNVS power key (onboard power button)

Signed-off-by: Rogerio Pimentel <rpimentel.silva@gmail.com>
Signed-off-by: Xiaofeng Wei <xiaofeng.wei@nxp.com>
---

Changes in v4:

- Change label pcal6416 to pcal6416_0

Changes in v3:

- Removing the following tags and names added
on v2 by mistake:
Reviewed-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Changes in v2:

- Fixed dt-binding schema warnings
- Renamed nodes 'red, green and blue' to
'led-0, led-1 and led-2'
- Renamed led labels 'led-0, led-1 and led-2'
to 'red, green and blue'
- Added Reviewed-by and Signed-off-by tags

arch/arm64/boot/dts/freescale/Makefile | 1 +
arch/arm64/boot/dts/freescale/imx8mp-frdm.dts | 355 ++++++++++++++++++
2 files changed, 356 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-frdm.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 75676b908299..323e98c0cb48 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -206,6 +206,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-dhcom-pdk3.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-dhcom-picoitx.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-edm-g-wb.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-frdm.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-mate.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-pro.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-pulse.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-frdm.dts b/arch/arm64/boot/dts/freescale/imx8mp-frdm.dts
new file mode 100644
index 000000000000..242cce2f2029
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-frdm.dts
@@ -0,0 +1,355 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2019 NXP
+ */
+
+/dts-v1/;
+
+#include "imx8mp.dtsi"
+
+/ {
+ model = "NXP i.MX8MPlus FRDM board";
+ compatible = "fsl,imx8mp-frdm", "fsl,imx8mp";
+
+ chosen {
+ stdout-path = &uart2;
+ };
+
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ led-0 {
+ label = "red";
+ gpios = <&pcal6416_0 13 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+
+ led-1 {
+ label = "green";
+ gpios = <&pcal6416_0 14 GPIO_ACTIVE_HIGH>;
+ default-state = "on";
+ };
+
+ led-2 {
+ label = "blue";
+ gpios = <&pcal6416_0 15 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ };
+
+ memory@40000000 {
+ device_type = "memory";
+ reg = <0x0 0x40000000 0 0xc0000000>,
+ <0x1 0x00000000 0 0x40000000>;
+ };
+};
+
+&A53_0 {
+ cpu-supply = <&reg_arm>;
+};
+
+&A53_1 {
+ cpu-supply = <&reg_arm>;
+};
+
+&A53_2 {
+ cpu-supply = <&reg_arm>;
+};
+
+&A53_3 {
+ cpu-supply = <&reg_arm>;
+};
+
+&i2c1 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c1>;
+ status = "okay";
+
+ pmic@25 {
+ compatible = "nxp,pca9450c";
+ reg = <0x25>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pmic>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
+
+ regulators {
+ BUCK1 {
+ regulator-name = "BUCK1";
+ regulator-min-microvolt = <720000>;
+ regulator-max-microvolt = <1000000>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <3125>;
+ };
+
+ reg_arm: BUCK2 {
+ regulator-name = "BUCK2";
+ regulator-min-microvolt = <720000>;
+ regulator-max-microvolt = <1025000>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <3125>;
+ nxp,dvs-run-voltage = <950000>;
+ nxp,dvs-standby-voltage = <850000>;
+ };
+
+ BUCK4 {
+ regulator-name = "BUCK4";
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3600000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ reg_buck5: BUCK5 {
+ regulator-name = "BUCK5";
+ regulator-min-microvolt = <1650000>;
+ regulator-max-microvolt = <1950000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ BUCK6 {
+ regulator-name = "BUCK6";
+ regulator-min-microvolt = <1045000>;
+ regulator-max-microvolt = <1155000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ LDO1 {
+ regulator-name = "LDO1";
+ regulator-min-microvolt = <1650000>;
+ regulator-max-microvolt = <1950000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ LDO3 {
+ regulator-name = "LDO3";
+ regulator-min-microvolt = <1710000>;
+ regulator-max-microvolt = <1890000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ LDO5 {
+ regulator-name = "LDO5";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+ };
+ };
+
+ pcal6416_0: gpio@20 {
+ compatible = "nxp,pcal6416";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pcal6416_0_int>;
+ interrupt-parent = <&gpio3>;
+ interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
+ gpio-line-names = "CSI1_nRST",
+ "CSI2_nRST",
+ "DSI_CTP_RST",
+ "EXT_PWREN1",
+ "CAN_STBY",
+ "EXP_P0_5",
+ "EXP_P0_6",
+ "P0_7",
+ "LVDS0_BLT_EN",
+ "LVDS1_BLT_EN",
+ "LVDS0_CTP_RST",
+ "LVDS1_CTP_RST",
+ "SPK_PWREN",
+ "RLED_GPIO",
+ "GLED_GPIO",
+ "BLED_GPIO";
+ };
+
+ pcal6416_1: gpio@21 {
+ compatible = "nxp,pcal6416";
+ reg = <0x21>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pcal6416_1_int>;
+ interrupt-parent = <&gpio2>;
+ interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+ gpio-line-names = "P0_0",
+ "P0_1",
+ "AUD_nINT",
+ "RTC_nINTA",
+ "USB1_SS_SEL",
+ "USB2_PWR_EN",
+ "SPI_EXP_SEL",
+ "P0_7",
+ "W2_HOST_WAKE_SD_3V3",
+ "W2_HOST_WAKE_BT_3V3",
+ "EXP_WIFI_BT_PDN_3V3",
+ "EXP_BT_RST_3V3",
+ "W2_RST_IND_3V3",
+ "SPI_nINT_3V3",
+ "KEYM_PCIE_nWAKE",
+ "P1_7";
+ };
+};
+
+&i2c2 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c2>;
+ status = "okay";
+};
+
+&i2c3 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c3>;
+ status = "okay";
+};
+
+&snvs_pwrkey {
+ status = "okay";
+};
+
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
+ status = "okay";
+};
+
+&uart3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart3>;
+ assigned-clocks = <&clk IMX8MP_CLK_UART3>;
+ assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_80M>;
+ uart-has-rtscts;
+ status = "okay";
+};
+
+&usdhc3 {
+ assigned-clocks = <&clk IMX8MP_CLK_USDHC3>;
+ 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";
+};
+
+&iomuxc {
+ pinctrl_i2c1: i2c1grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_I2C1_SCL__I2C1_SCL 0x400001c2
+ MX8MP_IOMUXC_I2C1_SDA__I2C1_SDA 0x400001c2
+ >;
+ };
+
+ pinctrl_i2c2: i2c2grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_I2C2_SCL__I2C2_SCL 0x400001c2
+ MX8MP_IOMUXC_I2C2_SDA__I2C2_SDA 0x400001c2
+ >;
+ };
+
+ pinctrl_i2c3: i2c3grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_I2C3_SCL__I2C3_SCL 0x400001c2
+ MX8MP_IOMUXC_I2C3_SDA__I2C3_SDA 0x400001c2
+ >;
+ };
+
+ pinctrl_pmic: pmicgrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03 0x000001c0
+ >;
+ };
+
+ pinctrl_pcal6416_0_int: pcal6416_0_int_grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_READY_B__GPIO3_IO16 0x146
+ >;
+ };
+
+ pinctrl_pcal6416_1_int: pcal6416_1_int_grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SD1_STROBE__GPIO2_IO11 0x146
+ >;
+ };
+
+ pinctrl_uart2: uart2grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_UART2_RXD__UART2_DCE_RX 0x140
+ MX8MP_IOMUXC_UART2_TXD__UART2_DCE_TX 0x140
+ >;
+ };
+
+ pinctrl_uart3: uart3grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_ECSPI1_SCLK__UART3_DCE_RX 0x140
+ MX8MP_IOMUXC_ECSPI1_MOSI__UART3_DCE_TX 0x140
+ MX8MP_IOMUXC_ECSPI1_SS0__UART3_DCE_RTS 0x140
+ MX8MP_IOMUXC_ECSPI1_MISO__UART3_DCE_CTS 0x140
+ >;
+ };
+
+ pinctrl_usdhc3: usdhc3grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK 0x190
+ MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD 0x1d0
+ MX8MP_IOMUXC_NAND_DATA04__USDHC3_DATA0 0x1d0
+ MX8MP_IOMUXC_NAND_DATA05__USDHC3_DATA1 0x1d0
+ MX8MP_IOMUXC_NAND_DATA06__USDHC3_DATA2 0x1d0
+ MX8MP_IOMUXC_NAND_DATA07__USDHC3_DATA3 0x1d0
+ MX8MP_IOMUXC_NAND_RE_B__USDHC3_DATA4 0x1d0
+ MX8MP_IOMUXC_NAND_CE2_B__USDHC3_DATA5 0x1d0
+ MX8MP_IOMUXC_NAND_CE3_B__USDHC3_DATA6 0x1d0
+ MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7 0x1d0
+ MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE 0x190
+ >;
+ };
+
+ pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK 0x194
+ MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD 0x1d4
+ MX8MP_IOMUXC_NAND_DATA04__USDHC3_DATA0 0x1d4
+ MX8MP_IOMUXC_NAND_DATA05__USDHC3_DATA1 0x1d4
+ MX8MP_IOMUXC_NAND_DATA06__USDHC3_DATA2 0x1d4
+ MX8MP_IOMUXC_NAND_DATA07__USDHC3_DATA3 0x1d4
+ MX8MP_IOMUXC_NAND_RE_B__USDHC3_DATA4 0x1d4
+ MX8MP_IOMUXC_NAND_CE2_B__USDHC3_DATA5 0x1d4
+ MX8MP_IOMUXC_NAND_CE3_B__USDHC3_DATA6 0x1d4
+ MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7 0x1d4
+ MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE 0x194
+ >;
+ };
+
+ pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK 0x196
+ MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD 0x1d6
+ MX8MP_IOMUXC_NAND_DATA04__USDHC3_DATA0 0x1d6
+ MX8MP_IOMUXC_NAND_DATA05__USDHC3_DATA1 0x1d6
+ MX8MP_IOMUXC_NAND_DATA06__USDHC3_DATA2 0x1d6
+ MX8MP_IOMUXC_NAND_DATA07__USDHC3_DATA3 0x1d6
+ MX8MP_IOMUXC_NAND_RE_B__USDHC3_DATA4 0x1d6
+ MX8MP_IOMUXC_NAND_CE2_B__USDHC3_DATA5 0x1d6
+ MX8MP_IOMUXC_NAND_CE3_B__USDHC3_DATA6 0x1d6
+ MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7 0x1d6
+ MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE 0x196
+ >;
+ };
+};
--
2.25.1