Add DeviceTree support for the NXP FRDM-IMX91S development board based
on the i.MX91 SoC. FRDM-IMX91S is a cost-optimized variant of FRDM-IMX91
and differs in memory, storage, Ethernet, and PMIC configuration:
- 512MB LPDDR4 (FRDM-IMX91 uses 1GB)
- 256MB FlexSPI-NAND (FRDM-IMX91 uses 8GB eMMC)
- Single GbE port (FRDM-IMX91 has dual GbE)
- PMIC PF9453 (FRDM-IMX91 uses PCA9451A)
This DT enables:
- ADC1
- UART1 and UART5
- I2C bus and children nodes
- USB and related nodes
- uSDHC1 and uSDHC2
- FlexSPI NAND flash
- Watchdog3
- Ethernet (eqos)
- FlexCAN
- MQS
Link: https://www.nxp.com/design/design-center/development-boards-and-designs/FRDM-IMX91S
(FRDM-IMX91S board page)
Link: https://www.nxp.com/design/design-center/development-boards-and-designs/FRDM-IMX91
(FRDM-IMX91 board page)
Co-developed-by: Lei Xu <lei.xu@nxp.com>
Signed-off-by: Lei Xu <lei.xu@nxp.com>
Co-developed-by: Xiaofeng Wei <xiaofeng.wei@nxp.com>
Signed-off-by: Xiaofeng Wei <xiaofeng.wei@nxp.com>
Signed-off-by: Yanan Yang <yanan.yang@nxp.com>
---
Changes in v5:
- Replace space with tab in IOMUX
- Rebase to latest linux-next tree
---
Changes in v4:
- Remove the board-specific "fsl,imx6sx-sdb-mqs" compatible from the sound-mqs node
- Remove redundant address and size cells from lpi2c2 node
---
Changes in v3:
- add bootph- property for nodes should be kept in bootloader phase
Changes in v2:
- Correct author name: removed extra period in "Yanan.Yang"
- Removed aliases pointing to disabled nodes from DTS
- Add "rtc0 = &pcf2131;" in aliases to make external RTC the primary device
- Fix DT node name: change
"usdhc1_pwrseq: usdhc1_pwrseq" to "usdhc1_pwrseq: usdhc1-pwrseq"
- Renamed LED node from 'status' to 'led-0' to comply with gpio-leds binding
- Replace regulator-based transceiver (reg_can_stby) with CAN PHY (nxp,tja1051)
- Replaced 'xceiver-supply' property with 'phys' in flexcan1 node
- Adjusted alignment in fsl,pins property: used spaces between pin names and values for proper DTS style.
---
arch/arm64/boot/dts/freescale/Makefile | 1 +
.../boot/dts/freescale/imx91-11x11-frdm-s.dts | 769 +++++++++++++++++++++
2 files changed, 770 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 700bab4d3e60..77cd061bf416 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -406,6 +406,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8ulp-9x9-evk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx91-11x11-evk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx91-11x11-frdm.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx91-11x11-frdm-s.dtb
dtb-$(CONFIG_ARCH_MXC) += imx91-phyboard-segin.dtb
dtb-$(CONFIG_ARCH_MXC) += imx91-tqma9131-mba91xxca.dtb
dtb-$(CONFIG_ARCH_MXC) += imx93-9x9-qsb.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-frdm-s.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-frdm-s.dts
new file mode 100644
index 000000000000..62dc1dedfb0e
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx91-11x11-frdm-s.dts
@@ -0,0 +1,769 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2025 NXP
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/usb/pd.h>
+#include "imx91.dtsi"
+
+/ {
+ compatible = "fsl,imx91-11x11-frdm-s", "fsl,imx91";
+ model = "NXP FRDM-IMX91S board";
+
+ aliases {
+ ethernet0 = &eqos;
+ gpio0 = &gpio1;
+ gpio1 = &gpio2;
+ gpio2 = &gpio3;
+ gpio3 = &gpio4;
+ i2c0 = &lpi2c1;
+ i2c1 = &lpi2c2;
+ mmc0 = &usdhc1;
+ mmc1 = &usdhc2;
+ rtc0 = &pcf2131;
+ rtc1 = &bbnsm_rtc;
+ serial0 = &lpuart1;
+ serial4 = &lpuart5;
+ };
+
+ chosen {
+ stdout-path = &lpuart1;
+ };
+
+ flexcan1_phy: can-phy {
+ compatible = "nxp,tja1051";
+ #phy-cells = <0>;
+ max-bitrate = <5000000>;
+ silent-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+ pinctrl-0 = <&pinctrl_gpio_key>;
+ pinctrl-names = "default";
+
+ button {
+ interrupt-parent = <&gpio3>;
+ interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
+ gpios = <&gpio3 26 GPIO_PULL_UP>;
+ label = "User Button";
+ linux,code = <BTN_1>;
+ };
+ };
+
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ led-0 {
+ default-state = "on";
+ gpios = <&pcal6524 7 GPIO_ACTIVE_LOW>;
+ label = "green:status";
+ };
+ };
+
+ reg_vref_1v8: regulator-adc-vref {
+ compatible = "regulator-fixed";
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microvolt = <1800000>;
+ regulator-name = "vref_1v8";
+ };
+
+ reg_usdhc1_vmmc: regulator-usdhc1 {
+ compatible = "regulator-fixed";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-name = "WLAN_EN";
+ startup-delay-us = <20000>;
+ gpio = <&pcal6524 3 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ reg_usdhc2_vmmc: regulator-usdhc2 {
+ compatible = "regulator-fixed";
+ off-on-delay-us = <12000>;
+ pinctrl-0 = <&pinctrl_reg_usdhc2_vmmc>;
+ pinctrl-names = "default";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-name = "VSD_3V3";
+ gpio = <&gpio3 7 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ bootph-pre-ram;
+ bootph-some-ram;
+ };
+
+ reg_usb_vbus: regulator-vbus {
+ compatible = "regulator-fixed";
+ regulator-max-microvolt = <5000000>;
+ regulator-min-microvolt = <5000000>;
+ regulator-name = "USB_VBUS";
+ gpio = <&pcal6524 15 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ linux,cma {
+ compatible = "shared-dma-pool";
+ alloc-ranges = <0 0x80000000 0 0x20000000>;
+ reusable;
+ size = <0 0x2000000>;
+ linux,cma-default;
+ };
+ };
+
+ soc@0 {
+ bootph-all;
+ bootph-pre-ram;
+ };
+
+ sound-mqs {
+ compatible = "fsl,imx-audio-mqs";
+ model = "mqs-audio";
+ audio-codec = <&mqs1>;
+ audio-cpu = <&sai1>;
+ };
+
+ usdhc1_pwrseq: usdhc1-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ reset-gpios = <&pcal6524 18 GPIO_ACTIVE_LOW>;
+ };
+};
+
+&adc1 {
+ vref-supply = <®_vref_1v8>;
+ status = "okay";
+};
+
+&aips1 {
+ bootph-pre-ram;
+ bootph-all;
+};
+
+&aips2 {
+ bootph-pre-ram;
+ bootph-some-ram;
+};
+
+&aips3 {
+ bootph-pre-ram;
+ bootph-some-ram;
+};
+
+&clk {
+ bootph-all;
+ bootph-pre-ram;
+};
+
+&clk_ext1 {
+ bootph-all;
+ bootph-pre-ram;
+};
+
+&eqos {
+ phy-handle = <ðphy1>;
+ phy-mode = "rgmii-id";
+ pinctrl-0 = <&pinctrl_eqos>;
+ pinctrl-1 = <&pinctrl_eqos_sleep>;
+ pinctrl-names = "default", "sleep";
+ status = "okay";
+
+ mdio {
+ compatible = "snps,dwmac-mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clock-frequency = <5000000>;
+
+ ethphy1: ethernet-phy@4 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <4>;
+ };
+ };
+};
+
+&flexcan1 {
+ phys = <&flexcan1_phy>;
+ pinctrl-0 = <&pinctrl_flexcan1>;
+ pinctrl-1 = <&pinctrl_flexcan1_sleep>;
+ pinctrl-names = "default", "sleep";
+ status = "okay";
+};
+
+&flexspi1 {
+ pinctrl-0 = <&pinctrl_flexspi1>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ flash@0 {
+ compatible = "spi-nand";
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ spi-max-frequency = <104000000>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ reg = <0x000000 0x800000>;
+ label = "bootloader";
+ };
+
+ partition@1 {
+ reg = <0x800000 0x800000>;
+ label = "env";
+ };
+
+ partition@2 {
+ reg = <0x1000000 0x2800000>;
+ label = "kernel";
+ };
+
+ partition@3 {
+ reg = <0x3800000 0x20000>;
+ label = "dtb";
+ };
+
+ partition@4 {
+ reg = <0x3820000 0xc7e0000>;
+ label = "rootfs";
+ linux,rootfs;
+ };
+ };
+ };
+};
+
+&gpio1 {
+ bootph-pre-ram;
+ bootph-some-ram;
+};
+
+&gpio2 {
+ bootph-pre-ram;
+ bootph-some-ram;
+};
+
+&gpio3 {
+ bootph-pre-ram;
+ bootph-some-ram;
+};
+
+&gpio4 {
+ bootph-pre-ram;
+ bootph-some-ram;
+};
+
+&iomuxc {
+ bootph-pre-ram;
+ bootph-some-ram;
+
+ pinctrl_eqos: eqosgrp {
+ fsl,pins = <
+ MX91_PAD_ENET1_MDC__ENET1_MDC 0x57e
+ MX91_PAD_ENET1_MDIO__ENET_QOS_MDIO 0x57e
+ MX91_PAD_ENET1_RD0__ENET_QOS_RGMII_RD0 0x57e
+ MX91_PAD_ENET1_RD1__ENET_QOS_RGMII_RD1 0x57e
+ MX91_PAD_ENET1_RD2__ENET_QOS_RGMII_RD2 0x57e
+ MX91_PAD_ENET1_RD3__ENET_QOS_RGMII_RD3 0x57e
+ MX91_PAD_ENET1_RXC__ENET_QOS_RGMII_RXC 0x5fe
+ MX91_PAD_ENET1_RX_CTL__ENET_QOS_RGMII_RX_CTL 0x57e
+ MX91_PAD_ENET1_TD0__ENET_QOS_RGMII_TD0 0x57e
+ MX91_PAD_ENET1_TD1__ENET1_RGMII_TD1 0x57e
+ MX91_PAD_ENET1_TD2__ENET_QOS_RGMII_TD2 0x57e
+ MX91_PAD_ENET1_TD3__ENET_QOS_RGMII_TD3 0x57e
+ MX91_PAD_ENET1_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK 0x5fe
+ MX91_PAD_ENET1_TX_CTL__ENET_QOS_RGMII_TX_CTL 0x57e
+ >;
+ };
+
+ pinctrl_eqos_sleep: eqossleepgrp {
+ fsl,pins = <
+ MX91_PAD_ENET1_MDC__GPIO4_IO0 0x31e
+ MX91_PAD_ENET1_MDIO__GPIO4_IO1 0x31e
+ MX91_PAD_ENET1_RD0__GPIO4_IO10 0x31e
+ MX91_PAD_ENET1_RD1__GPIO4_IO11 0x31e
+ MX91_PAD_ENET1_RD2__GPIO4_IO12 0x31e
+ MX91_PAD_ENET1_RD3__GPIO4_IO13 0x31e
+ MX91_PAD_ENET1_RXC__GPIO4_IO9 0x31e
+ MX91_PAD_ENET1_RX_CTL__GPIO4_IO8 0x31e
+ MX91_PAD_ENET1_TD0__GPIO4_IO5 0x31e
+ MX91_PAD_ENET1_TD1__GPIO4_IO4 0x31e
+ MX91_PAD_ENET1_TD2__GPIO4_IO3 0x31e
+ MX91_PAD_ENET1_TD3__GPIO4_IO2 0x31e
+ MX91_PAD_ENET1_TXC__GPIO4_IO7 0x31e
+ MX91_PAD_ENET1_TX_CTL__GPIO4_IO6 0x31e
+ >;
+ };
+
+ pinctrl_flexcan1: flexcan1grp {
+ fsl,pins = <
+ MX91_PAD_GPIO_IO28__CAN1_TX 0x139e
+ MX91_PAD_GPIO_IO29__CAN1_RX 0x139e
+ MX91_PAD_PDM_BIT_STREAM1__GPIO1_IO10 0x31e
+ >;
+ };
+
+ pinctrl_flexcan1_sleep: flexcan1sleepgrp {
+ fsl,pins = <
+ MX91_PAD_GPIO_IO28__GPIO2_IO28 0x31e
+ MX91_PAD_GPIO_IO29__GPIO2_IO29 0x31e
+ MX91_PAD_PDM_BIT_STREAM1__GPIO1_IO10 0x31e
+ >;
+ };
+
+ pinctrl_flexspi1: flexspi1grp {
+ fsl,pins = <
+ MX91_PAD_SD3_CLK__FLEXSPI1_A_SCLK 0x3fe
+ MX91_PAD_SD3_CMD__FLEXSPI1_A_SS0_B 0x3fe
+ MX91_PAD_SD3_DATA0__FLEXSPI1_A_DATA0 0x3fe
+ MX91_PAD_SD3_DATA1__FLEXSPI1_A_DATA1 0x3fe
+ MX91_PAD_SD3_DATA2__FLEXSPI1_A_DATA2 0x3fe
+ MX91_PAD_SD3_DATA3__FLEXSPI1_A_DATA3 0x3fe
+ >;
+ };
+
+ pinctrl_gpio_key: gpiokeysgrp {
+ fsl,pins = <
+ MX91_PAD_CCM_CLKO1__GPIO3_IO26 0x31e
+ >;
+ };
+
+ pinctrl_lpi2c1: lpi2c1grp {
+ fsl,pins = <
+ MX91_PAD_I2C1_SCL__LPI2C1_SCL 0x40000b9e
+ MX91_PAD_I2C1_SDA__LPI2C1_SDA 0x40000b9e
+ >;
+ bootph-pre-ram;
+ bootph-some-ram;
+ };
+
+ pinctrl_lpi2c2: lpi2c2grp {
+ fsl,pins = <
+ MX91_PAD_I2C2_SCL__LPI2C2_SCL 0x40000b9e
+ MX91_PAD_I2C2_SDA__LPI2C2_SDA 0x40000b9e
+ >;
+ bootph-pre-ram;
+ bootph-some-ram;
+ };
+
+ pinctrl_mqs1: mqs1grp {
+ fsl,pins = <
+ MX91_PAD_PDM_CLK__MQS1_LEFT 0x31e
+ MX91_PAD_PDM_BIT_STREAM0__MQS1_RIGHT 0x31e
+ >;
+ };
+
+ pinctrl_pcal6524: pcal6524grp {
+ fsl,pins = <
+ MX91_PAD_CCM_CLKO2__GPIO3_IO27 0x31e
+ MX91_PAD_SD1_DATA5__GPIO3_IO15 0x31e
+ >;
+ };
+
+ pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
+ fsl,pins = <
+ MX91_PAD_SD2_RESET_B__GPIO3_IO7 0x31e
+ >;
+ bootph-pre-ram;
+ };
+
+ pinctrl_uart1: uart1grp {
+ fsl,pins = <
+ MX91_PAD_UART1_RXD__LPUART1_RX 0x31e
+ MX91_PAD_UART1_TXD__LPUART1_TX 0x31e
+ >;
+ bootph-pre-ram;
+ bootph-some-ram;
+ };
+
+ pinctrl_uart5: uart5grp {
+ fsl,pins = <
+ MX91_PAD_DAP_TDO_TRACESWO__LPUART5_TX 0x31e
+ MX91_PAD_DAP_TDI__LPUART5_RX 0x31e
+ MX91_PAD_DAP_TMS_SWDIO__LPUART5_RTS_B 0x31e
+ MX91_PAD_DAP_TCLK_SWCLK__LPUART5_CTS_B 0x31e
+ >;
+ };
+
+ pinctrl_usdhc1: usdhc1grp {
+ fsl,pins = <
+ MX91_PAD_SD1_CLK__USDHC1_CLK 0x1582
+ MX91_PAD_SD1_CMD__USDHC1_CMD 0x1382
+ MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x1382
+ MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x1382
+ MX91_PAD_SD1_DATA2__USDHC1_DATA2 0x1382
+ MX91_PAD_SD1_DATA3__USDHC1_DATA3 0x1382
+ MX91_PAD_SD1_DATA4__GPIO3_IO14 0x31e
+ MX91_PAD_SD1_STROBE__GPIO3_IO18 0x31e
+ >;
+ bootph-pre-ram;
+ bootph-some-ram;
+ };
+
+ pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
+ fsl,pins = <
+ MX91_PAD_SD1_CLK__USDHC1_CLK 0x158e
+ MX91_PAD_SD1_CMD__USDHC1_CMD 0x138e
+ MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x138e
+ MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x138e
+ MX91_PAD_SD1_DATA2__USDHC1_DATA2 0x138e
+ MX91_PAD_SD1_DATA3__USDHC1_DATA3 0x138e
+ MX91_PAD_SD1_DATA4__GPIO3_IO14 0x31e
+ MX91_PAD_SD1_STROBE__GPIO3_IO18 0x31e
+ >;
+ };
+
+ pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
+ fsl,pins = <
+ MX91_PAD_SD1_CLK__USDHC1_CLK 0x15fe
+ MX91_PAD_SD1_CMD__USDHC1_CMD 0x13fe
+ MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x13fe
+ MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x13fe
+ MX91_PAD_SD1_DATA2__USDHC1_DATA2 0x13fe
+ MX91_PAD_SD1_DATA3__USDHC1_DATA3 0x13fe
+ MX91_PAD_SD1_DATA4__GPIO3_IO14 0x31e
+ MX91_PAD_SD1_STROBE__GPIO3_IO18 0x31e
+ >;
+ };
+
+ pinctrl_usdhc2_gpio: usdhc2gpiogrp {
+ fsl,pins = <
+ MX91_PAD_SD2_CD_B__GPIO3_IO0 0x31e
+ >;
+ bootph-pre-ram;
+ bootph-some-ram;
+ };
+
+ pinctrl_usdhc2_gpio_sleep: usdhc2gpiosleepgrp {
+ fsl,pins = <
+ MX91_PAD_SD2_CD_B__GPIO3_IO0 0x51e
+ >;
+ };
+
+ 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
+ >;
+ bootph-pre-ram;
+ bootph-some-ram;
+ };
+
+ 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_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_wdog: wdoggrp {
+ fsl,pins = <
+ MX91_PAD_WDOG_ANY__WDOG1_WDOG_ANY 0x31e
+ >;
+ };
+};
+
+&lpi2c1 {
+ clock-frequency = <400000>;
+ pinctrl-0 = <&pinctrl_lpi2c1>;
+ pinctrl-names = "default";
+ bootph-pre-ram;
+ bootph-some-ram;
+ status = "okay";
+
+ pcf2131: rtc@53 {
+ compatible = "nxp,pcf2131";
+ reg = <0x53>;
+ interrupt-parent = <&pcal6524>;
+ interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
+ };
+};
+
+&lpi2c2 {
+ clock-frequency = <400000>;
+ pinctrl-0 = <&pinctrl_lpi2c2>;
+ pinctrl-names = "default";
+ bootph-pre-ram;
+ bootph-some-ram;
+ status = "okay";
+
+ pcal6524: gpio@22 {
+ compatible = "nxp,pcal6524";
+ reg = <0x22>;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ interrupt-parent = <&gpio3>;
+ interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ pinctrl-0 = <&pinctrl_pcal6524>;
+ pinctrl-names = "default";
+ reset-gpios = <&gpio3 15 GPIO_ACTIVE_LOW>;
+ };
+
+ pmic@32 {
+ compatible = "nxp,pf9453";
+ reg = <0x32>;
+ interrupt-parent = <&pcal6524>;
+ interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
+ bootph-pre-ram;
+ bootph-some-ram;
+
+ regulators {
+ bootph-pre-ram;
+ bootph-some-ram;
+
+ buck1: BUCK1 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <3775000>;
+ regulator-min-microvolt = <600000>;
+ regulator-name = "BUCK1";
+ };
+
+ buck2: BUCK2 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <2187500>;
+ regulator-min-microvolt = <600000>;
+ regulator-name = "BUCK2";
+ regulator-ramp-delay = <12500>;
+ };
+
+ buck3: BUCK3 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <3775000>;
+ regulator-min-microvolt = <600000>;
+ regulator-name = "BUCK3";
+ };
+
+ buck4: BUCK4 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <3775000>;
+ regulator-min-microvolt = <600000>;
+ regulator-name = "BUCK4";
+ };
+
+ ldo1: LDO1 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <800000>;
+ regulator-name = "LDO1";
+ };
+
+ ldo2: LDO2 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <1950000>;
+ regulator-min-microvolt = <500000>;
+ regulator-name = "LDO2";
+ };
+
+ ldo_snvs: LDO-SNVS {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <3400000>;
+ regulator-min-microvolt = <1200000>;
+ regulator-name = "LDO-SNVS";
+ };
+ };
+ };
+
+ ptn5110: tcpc@52 {
+ compatible = "nxp,ptn5110", "tcpci";
+ reg = <0x52>;
+ interrupt-parent = <&gpio3>;
+ interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
+
+ typec1_con: connector {
+ compatible = "usb-c-connector";
+ data-role = "dual";
+ label = "USB-C";
+ op-sink-microwatt = <15000000>;
+ power-role = "dual";
+ self-powered;
+ sink-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)
+ PDO_VAR(5000, 20000, 3000)>;
+ source-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>;
+ try-power-role = "sink";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ typec1_dr_sw: endpoint {
+ remote-endpoint = <&usb1_drd_sw>;
+ };
+ };
+ };
+ };
+ };
+};
+
+&lpuart1 {
+ pinctrl-0 = <&pinctrl_uart1>;
+ pinctrl-names = "default";
+ bootph-pre-ram;
+ bootph-some-ram;
+ status = "okay";
+};
+
+&lpuart5 {
+ pinctrl-0 = <&pinctrl_uart5>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ bluetooth {
+ compatible = "nxp,88w8987-bt";
+ };
+};
+
+&media_blk_ctrl {
+ status = "okay";
+};
+
+&mqs1 {
+ clocks = <&clk IMX93_CLK_MQS1_GATE>;
+ clock-names = "mclk";
+ pinctrl-0 = <&pinctrl_mqs1>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&osc_32k {
+ bootph-all;
+ bootph-pre-ram;
+};
+
+&osc_24m {
+ bootph-all;
+ bootph-pre-ram;
+};
+
+&sai1 {
+ clocks = <&clk IMX93_CLK_SAI1_IPG>, <&clk IMX93_CLK_DUMMY>,
+ <&clk IMX93_CLK_SAI1_GATE>, <&clk IMX93_CLK_DUMMY>,
+ <&clk IMX93_CLK_DUMMY>, <&clk IMX93_CLK_AUDIO_PLL>;
+ clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k";
+ assigned-clocks = <&clk IMX93_CLK_SAI1>;
+ assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
+ assigned-clock-rates = <24576000>;
+ #sound-dai-cells = <0>;
+ fsl,sai-mclk-direction-output;
+ status = "okay";
+};
+
+&usbotg1 {
+ adp-disable;
+ disable-over-current;
+ dr_mode = "otg";
+ hnp-disable;
+ srp-disable;
+ usb-role-switch;
+ samsung,picophy-dc-vol-level-adjust = <7>;
+ samsung,picophy-pre-emp-curr-control = <3>;
+ status = "okay";
+
+ port {
+ usb1_drd_sw: endpoint {
+ remote-endpoint = <&typec1_dr_sw>;
+ };
+ };
+};
+
+&usbotg2 {
+ disable-over-current;
+ dr_mode = "host";
+ vbus-supply = <®_usb_vbus>;
+ samsung,picophy-dc-vol-level-adjust = <7>;
+ samsung,picophy-pre-emp-curr-control = <3>;
+ status = "okay";
+};
+
+&usdhc1 {
+ bus-width = <8>;
+ keep-power-in-suspend;
+ mmc-pwrseq = <&usdhc1_pwrseq>;
+ non-removable;
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
+ pinctrl-names = "default", "state_100mhz", "state_200mhz";
+ vmmc-supply = <®_usdhc1_vmmc>;
+ wakeup-source;
+ bootph-pre-ram;
+ bootph-some-ram;
+ status = "okay";
+};
+
+&usdhc2 {
+ bus-width = <4>;
+ cd-gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
+ no-mmc;
+ no-sdio;
+ 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>;
+ pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
+ vmmc-supply = <®_usdhc2_vmmc>;
+ bootph-pre-ram;
+ bootph-some-ram;
+ status = "okay";
+};
+
+&wdog3 {
+ pinctrl-0 = <&pinctrl_wdog>;
+ pinctrl-names = "default";
+ fsl,ext-reset-output;
+ status = "okay";
+};
--
2.43.0On Tue, Feb 10, 2026 at 07:47:55PM +0900, Yanan Yang wrote:
> Add DeviceTree support for the NXP FRDM-IMX91S development board based
> on the i.MX91 SoC. FRDM-IMX91S is a cost-optimized variant of FRDM-IMX91
> and differs in memory, storage, Ethernet, and PMIC configuration:
>
> - 512MB LPDDR4 (FRDM-IMX91 uses 1GB)
> - 256MB FlexSPI-NAND (FRDM-IMX91 uses 8GB eMMC)
> - Single GbE port (FRDM-IMX91 has dual GbE)
> - PMIC PF9453 (FRDM-IMX91 uses PCA9451A)
Look like it is very similar with imx91-11x11-frdm boards.
Can you create common dtsi for both boards
imx91-11x11-fdrm-common.dtsi
then imx91-11x11-fdrm-s.dts and imx91-11x11-frdm.dts included
imx91-11x11-fdrm-common.dtsi.
You can refer below method
https://lore.kernel.org/imx/20260204083551.2867263-1-sherry.sun@nxp.com/
Frank
>
> This DT enables:
> - ADC1
> - UART1 and UART5
> - I2C bus and children nodes
> - USB and related nodes
> - uSDHC1 and uSDHC2
> - FlexSPI NAND flash
> - Watchdog3
> - Ethernet (eqos)
> - FlexCAN
> - MQS
>
> Link: https://www.nxp.com/design/design-center/development-boards-and-designs/FRDM-IMX91S
> (FRDM-IMX91S board page)
> Link: https://www.nxp.com/design/design-center/development-boards-and-designs/FRDM-IMX91
> (FRDM-IMX91 board page)
>
> Co-developed-by: Lei Xu <lei.xu@nxp.com>
> Signed-off-by: Lei Xu <lei.xu@nxp.com>
> Co-developed-by: Xiaofeng Wei <xiaofeng.wei@nxp.com>
> Signed-off-by: Xiaofeng Wei <xiaofeng.wei@nxp.com>
> Signed-off-by: Yanan Yang <yanan.yang@nxp.com>
>
> ---
> Changes in v5:
> - Replace space with tab in IOMUX
> - Rebase to latest linux-next tree
>
> ---
> Changes in v4:
> - Remove the board-specific "fsl,imx6sx-sdb-mqs" compatible from the sound-mqs node
> - Remove redundant address and size cells from lpi2c2 node
>
> ---
> Changes in v3:
> - add bootph- property for nodes should be kept in bootloader phase
>
> Changes in v2:
> - Correct author name: removed extra period in "Yanan.Yang"
> - Removed aliases pointing to disabled nodes from DTS
> - Add "rtc0 = &pcf2131;" in aliases to make external RTC the primary device
> - Fix DT node name: change
> "usdhc1_pwrseq: usdhc1_pwrseq" to "usdhc1_pwrseq: usdhc1-pwrseq"
> - Renamed LED node from 'status' to 'led-0' to comply with gpio-leds binding
> - Replace regulator-based transceiver (reg_can_stby) with CAN PHY (nxp,tja1051)
> - Replaced 'xceiver-supply' property with 'phys' in flexcan1 node
> - Adjusted alignment in fsl,pins property: used spaces between pin names and values for proper DTS style.
> ---
> arch/arm64/boot/dts/freescale/Makefile | 1 +
> .../boot/dts/freescale/imx91-11x11-frdm-s.dts | 769 +++++++++++++++++++++
> 2 files changed, 770 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index 700bab4d3e60..77cd061bf416 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -406,6 +406,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8ulp-9x9-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx91-11x11-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx91-11x11-frdm.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx91-11x11-frdm-s.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx91-phyboard-segin.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx91-tqma9131-mba91xxca.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx93-9x9-qsb.dtb
> diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-frdm-s.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-frdm-s.dts
> new file mode 100644
> index 000000000000..62dc1dedfb0e
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx91-11x11-frdm-s.dts
> @@ -0,0 +1,769 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2025 NXP
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/usb/pd.h>
> +#include "imx91.dtsi"
> +
> +/ {
> + compatible = "fsl,imx91-11x11-frdm-s", "fsl,imx91";
> + model = "NXP FRDM-IMX91S board";
> +
> + aliases {
> + ethernet0 = &eqos;
> + gpio0 = &gpio1;
> + gpio1 = &gpio2;
> + gpio2 = &gpio3;
> + gpio3 = &gpio4;
> + i2c0 = &lpi2c1;
> + i2c1 = &lpi2c2;
> + mmc0 = &usdhc1;
> + mmc1 = &usdhc2;
> + rtc0 = &pcf2131;
> + rtc1 = &bbnsm_rtc;
> + serial0 = &lpuart1;
> + serial4 = &lpuart5;
> + };
> +
> + chosen {
> + stdout-path = &lpuart1;
> + };
> +
> + flexcan1_phy: can-phy {
> + compatible = "nxp,tja1051";
> + #phy-cells = <0>;
> + max-bitrate = <5000000>;
> + silent-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
> + };
> +
> + gpio-keys {
> + compatible = "gpio-keys";
> + pinctrl-0 = <&pinctrl_gpio_key>;
> + pinctrl-names = "default";
> +
> + button {
> + interrupt-parent = <&gpio3>;
> + interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
> + gpios = <&gpio3 26 GPIO_PULL_UP>;
> + label = "User Button";
> + linux,code = <BTN_1>;
> + };
> + };
> +
> + gpio-leds {
> + compatible = "gpio-leds";
> +
> + led-0 {
> + default-state = "on";
> + gpios = <&pcal6524 7 GPIO_ACTIVE_LOW>;
> + label = "green:status";
> + };
> + };
> +
> + reg_vref_1v8: regulator-adc-vref {
> + compatible = "regulator-fixed";
> + regulator-max-microvolt = <1800000>;
> + regulator-min-microvolt = <1800000>;
> + regulator-name = "vref_1v8";
> + };
> +
> + reg_usdhc1_vmmc: regulator-usdhc1 {
> + compatible = "regulator-fixed";
> + regulator-max-microvolt = <3300000>;
> + regulator-min-microvolt = <3300000>;
> + regulator-name = "WLAN_EN";
> + startup-delay-us = <20000>;
> + gpio = <&pcal6524 3 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + };
> +
> + reg_usdhc2_vmmc: regulator-usdhc2 {
> + compatible = "regulator-fixed";
> + off-on-delay-us = <12000>;
> + pinctrl-0 = <&pinctrl_reg_usdhc2_vmmc>;
> + pinctrl-names = "default";
> + regulator-max-microvolt = <3300000>;
> + regulator-min-microvolt = <3300000>;
> + regulator-name = "VSD_3V3";
> + gpio = <&gpio3 7 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + bootph-pre-ram;
> + bootph-some-ram;
> + };
> +
> + reg_usb_vbus: regulator-vbus {
> + compatible = "regulator-fixed";
> + regulator-max-microvolt = <5000000>;
> + regulator-min-microvolt = <5000000>;
> + regulator-name = "USB_VBUS";
> + gpio = <&pcal6524 15 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + };
> +
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + linux,cma {
> + compatible = "shared-dma-pool";
> + alloc-ranges = <0 0x80000000 0 0x20000000>;
> + reusable;
> + size = <0 0x2000000>;
> + linux,cma-default;
> + };
> + };
> +
> + soc@0 {
> + bootph-all;
> + bootph-pre-ram;
> + };
> +
> + sound-mqs {
> + compatible = "fsl,imx-audio-mqs";
> + model = "mqs-audio";
> + audio-codec = <&mqs1>;
> + audio-cpu = <&sai1>;
> + };
> +
> + usdhc1_pwrseq: usdhc1-pwrseq {
> + compatible = "mmc-pwrseq-simple";
> + reset-gpios = <&pcal6524 18 GPIO_ACTIVE_LOW>;
> + };
> +};
> +
> +&adc1 {
> + vref-supply = <®_vref_1v8>;
> + status = "okay";
> +};
> +
> +&aips1 {
> + bootph-pre-ram;
> + bootph-all;
> +};
> +
> +&aips2 {
> + bootph-pre-ram;
> + bootph-some-ram;
> +};
> +
> +&aips3 {
> + bootph-pre-ram;
> + bootph-some-ram;
> +};
> +
> +&clk {
> + bootph-all;
> + bootph-pre-ram;
> +};
> +
> +&clk_ext1 {
> + bootph-all;
> + bootph-pre-ram;
> +};
> +
> +&eqos {
> + phy-handle = <ðphy1>;
> + phy-mode = "rgmii-id";
> + pinctrl-0 = <&pinctrl_eqos>;
> + pinctrl-1 = <&pinctrl_eqos_sleep>;
> + pinctrl-names = "default", "sleep";
> + status = "okay";
> +
> + mdio {
> + compatible = "snps,dwmac-mdio";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + clock-frequency = <5000000>;
> +
> + ethphy1: ethernet-phy@4 {
> + compatible = "ethernet-phy-ieee802.3-c22";
> + reg = <4>;
> + };
> + };
> +};
> +
> +&flexcan1 {
> + phys = <&flexcan1_phy>;
> + pinctrl-0 = <&pinctrl_flexcan1>;
> + pinctrl-1 = <&pinctrl_flexcan1_sleep>;
> + pinctrl-names = "default", "sleep";
> + status = "okay";
> +};
> +
> +&flexspi1 {
> + pinctrl-0 = <&pinctrl_flexspi1>;
> + pinctrl-names = "default";
> + status = "okay";
> +
> + flash@0 {
> + compatible = "spi-nand";
> + reg = <0>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + spi-max-frequency = <104000000>;
> + spi-rx-bus-width = <4>;
> + spi-tx-bus-width = <4>;
> +
> + partitions {
> + compatible = "fixed-partitions";
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + partition@0 {
> + reg = <0x000000 0x800000>;
> + label = "bootloader";
> + };
> +
> + partition@1 {
> + reg = <0x800000 0x800000>;
> + label = "env";
> + };
> +
> + partition@2 {
> + reg = <0x1000000 0x2800000>;
> + label = "kernel";
> + };
> +
> + partition@3 {
> + reg = <0x3800000 0x20000>;
> + label = "dtb";
> + };
> +
> + partition@4 {
> + reg = <0x3820000 0xc7e0000>;
> + label = "rootfs";
> + linux,rootfs;
> + };
> + };
> + };
> +};
> +
> +&gpio1 {
> + bootph-pre-ram;
> + bootph-some-ram;
> +};
> +
> +&gpio2 {
> + bootph-pre-ram;
> + bootph-some-ram;
> +};
> +
> +&gpio3 {
> + bootph-pre-ram;
> + bootph-some-ram;
> +};
> +
> +&gpio4 {
> + bootph-pre-ram;
> + bootph-some-ram;
> +};
> +
> +&iomuxc {
> + bootph-pre-ram;
> + bootph-some-ram;
> +
> + pinctrl_eqos: eqosgrp {
> + fsl,pins = <
> + MX91_PAD_ENET1_MDC__ENET1_MDC 0x57e
> + MX91_PAD_ENET1_MDIO__ENET_QOS_MDIO 0x57e
> + MX91_PAD_ENET1_RD0__ENET_QOS_RGMII_RD0 0x57e
> + MX91_PAD_ENET1_RD1__ENET_QOS_RGMII_RD1 0x57e
> + MX91_PAD_ENET1_RD2__ENET_QOS_RGMII_RD2 0x57e
> + MX91_PAD_ENET1_RD3__ENET_QOS_RGMII_RD3 0x57e
> + MX91_PAD_ENET1_RXC__ENET_QOS_RGMII_RXC 0x5fe
> + MX91_PAD_ENET1_RX_CTL__ENET_QOS_RGMII_RX_CTL 0x57e
> + MX91_PAD_ENET1_TD0__ENET_QOS_RGMII_TD0 0x57e
> + MX91_PAD_ENET1_TD1__ENET1_RGMII_TD1 0x57e
> + MX91_PAD_ENET1_TD2__ENET_QOS_RGMII_TD2 0x57e
> + MX91_PAD_ENET1_TD3__ENET_QOS_RGMII_TD3 0x57e
> + MX91_PAD_ENET1_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK 0x5fe
> + MX91_PAD_ENET1_TX_CTL__ENET_QOS_RGMII_TX_CTL 0x57e
> + >;
> + };
> +
> + pinctrl_eqos_sleep: eqossleepgrp {
> + fsl,pins = <
> + MX91_PAD_ENET1_MDC__GPIO4_IO0 0x31e
> + MX91_PAD_ENET1_MDIO__GPIO4_IO1 0x31e
> + MX91_PAD_ENET1_RD0__GPIO4_IO10 0x31e
> + MX91_PAD_ENET1_RD1__GPIO4_IO11 0x31e
> + MX91_PAD_ENET1_RD2__GPIO4_IO12 0x31e
> + MX91_PAD_ENET1_RD3__GPIO4_IO13 0x31e
> + MX91_PAD_ENET1_RXC__GPIO4_IO9 0x31e
> + MX91_PAD_ENET1_RX_CTL__GPIO4_IO8 0x31e
> + MX91_PAD_ENET1_TD0__GPIO4_IO5 0x31e
> + MX91_PAD_ENET1_TD1__GPIO4_IO4 0x31e
> + MX91_PAD_ENET1_TD2__GPIO4_IO3 0x31e
> + MX91_PAD_ENET1_TD3__GPIO4_IO2 0x31e
> + MX91_PAD_ENET1_TXC__GPIO4_IO7 0x31e
> + MX91_PAD_ENET1_TX_CTL__GPIO4_IO6 0x31e
> + >;
> + };
> +
> + pinctrl_flexcan1: flexcan1grp {
> + fsl,pins = <
> + MX91_PAD_GPIO_IO28__CAN1_TX 0x139e
> + MX91_PAD_GPIO_IO29__CAN1_RX 0x139e
> + MX91_PAD_PDM_BIT_STREAM1__GPIO1_IO10 0x31e
> + >;
> + };
> +
> + pinctrl_flexcan1_sleep: flexcan1sleepgrp {
> + fsl,pins = <
> + MX91_PAD_GPIO_IO28__GPIO2_IO28 0x31e
> + MX91_PAD_GPIO_IO29__GPIO2_IO29 0x31e
> + MX91_PAD_PDM_BIT_STREAM1__GPIO1_IO10 0x31e
> + >;
> + };
> +
> + pinctrl_flexspi1: flexspi1grp {
> + fsl,pins = <
> + MX91_PAD_SD3_CLK__FLEXSPI1_A_SCLK 0x3fe
> + MX91_PAD_SD3_CMD__FLEXSPI1_A_SS0_B 0x3fe
> + MX91_PAD_SD3_DATA0__FLEXSPI1_A_DATA0 0x3fe
> + MX91_PAD_SD3_DATA1__FLEXSPI1_A_DATA1 0x3fe
> + MX91_PAD_SD3_DATA2__FLEXSPI1_A_DATA2 0x3fe
> + MX91_PAD_SD3_DATA3__FLEXSPI1_A_DATA3 0x3fe
> + >;
> + };
> +
> + pinctrl_gpio_key: gpiokeysgrp {
> + fsl,pins = <
> + MX91_PAD_CCM_CLKO1__GPIO3_IO26 0x31e
> + >;
> + };
> +
> + pinctrl_lpi2c1: lpi2c1grp {
> + fsl,pins = <
> + MX91_PAD_I2C1_SCL__LPI2C1_SCL 0x40000b9e
> + MX91_PAD_I2C1_SDA__LPI2C1_SDA 0x40000b9e
> + >;
> + bootph-pre-ram;
> + bootph-some-ram;
> + };
> +
> + pinctrl_lpi2c2: lpi2c2grp {
> + fsl,pins = <
> + MX91_PAD_I2C2_SCL__LPI2C2_SCL 0x40000b9e
> + MX91_PAD_I2C2_SDA__LPI2C2_SDA 0x40000b9e
> + >;
> + bootph-pre-ram;
> + bootph-some-ram;
> + };
> +
> + pinctrl_mqs1: mqs1grp {
> + fsl,pins = <
> + MX91_PAD_PDM_CLK__MQS1_LEFT 0x31e
> + MX91_PAD_PDM_BIT_STREAM0__MQS1_RIGHT 0x31e
> + >;
> + };
> +
> + pinctrl_pcal6524: pcal6524grp {
> + fsl,pins = <
> + MX91_PAD_CCM_CLKO2__GPIO3_IO27 0x31e
> + MX91_PAD_SD1_DATA5__GPIO3_IO15 0x31e
> + >;
> + };
> +
> + pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
> + fsl,pins = <
> + MX91_PAD_SD2_RESET_B__GPIO3_IO7 0x31e
> + >;
> + bootph-pre-ram;
> + };
> +
> + pinctrl_uart1: uart1grp {
> + fsl,pins = <
> + MX91_PAD_UART1_RXD__LPUART1_RX 0x31e
> + MX91_PAD_UART1_TXD__LPUART1_TX 0x31e
> + >;
> + bootph-pre-ram;
> + bootph-some-ram;
> + };
> +
> + pinctrl_uart5: uart5grp {
> + fsl,pins = <
> + MX91_PAD_DAP_TDO_TRACESWO__LPUART5_TX 0x31e
> + MX91_PAD_DAP_TDI__LPUART5_RX 0x31e
> + MX91_PAD_DAP_TMS_SWDIO__LPUART5_RTS_B 0x31e
> + MX91_PAD_DAP_TCLK_SWCLK__LPUART5_CTS_B 0x31e
> + >;
> + };
> +
> + pinctrl_usdhc1: usdhc1grp {
> + fsl,pins = <
> + MX91_PAD_SD1_CLK__USDHC1_CLK 0x1582
> + MX91_PAD_SD1_CMD__USDHC1_CMD 0x1382
> + MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x1382
> + MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x1382
> + MX91_PAD_SD1_DATA2__USDHC1_DATA2 0x1382
> + MX91_PAD_SD1_DATA3__USDHC1_DATA3 0x1382
> + MX91_PAD_SD1_DATA4__GPIO3_IO14 0x31e
> + MX91_PAD_SD1_STROBE__GPIO3_IO18 0x31e
> + >;
> + bootph-pre-ram;
> + bootph-some-ram;
> + };
> +
> + pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
> + fsl,pins = <
> + MX91_PAD_SD1_CLK__USDHC1_CLK 0x158e
> + MX91_PAD_SD1_CMD__USDHC1_CMD 0x138e
> + MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x138e
> + MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x138e
> + MX91_PAD_SD1_DATA2__USDHC1_DATA2 0x138e
> + MX91_PAD_SD1_DATA3__USDHC1_DATA3 0x138e
> + MX91_PAD_SD1_DATA4__GPIO3_IO14 0x31e
> + MX91_PAD_SD1_STROBE__GPIO3_IO18 0x31e
> + >;
> + };
> +
> + pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
> + fsl,pins = <
> + MX91_PAD_SD1_CLK__USDHC1_CLK 0x15fe
> + MX91_PAD_SD1_CMD__USDHC1_CMD 0x13fe
> + MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x13fe
> + MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x13fe
> + MX91_PAD_SD1_DATA2__USDHC1_DATA2 0x13fe
> + MX91_PAD_SD1_DATA3__USDHC1_DATA3 0x13fe
> + MX91_PAD_SD1_DATA4__GPIO3_IO14 0x31e
> + MX91_PAD_SD1_STROBE__GPIO3_IO18 0x31e
> + >;
> + };
> +
> + pinctrl_usdhc2_gpio: usdhc2gpiogrp {
> + fsl,pins = <
> + MX91_PAD_SD2_CD_B__GPIO3_IO0 0x31e
> + >;
> + bootph-pre-ram;
> + bootph-some-ram;
> + };
> +
> + pinctrl_usdhc2_gpio_sleep: usdhc2gpiosleepgrp {
> + fsl,pins = <
> + MX91_PAD_SD2_CD_B__GPIO3_IO0 0x51e
> + >;
> + };
> +
> + 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
> + >;
> + bootph-pre-ram;
> + bootph-some-ram;
> + };
> +
> + 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_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_wdog: wdoggrp {
> + fsl,pins = <
> + MX91_PAD_WDOG_ANY__WDOG1_WDOG_ANY 0x31e
> + >;
> + };
> +};
> +
> +&lpi2c1 {
> + clock-frequency = <400000>;
> + pinctrl-0 = <&pinctrl_lpi2c1>;
> + pinctrl-names = "default";
> + bootph-pre-ram;
> + bootph-some-ram;
> + status = "okay";
> +
> + pcf2131: rtc@53 {
> + compatible = "nxp,pcf2131";
> + reg = <0x53>;
> + interrupt-parent = <&pcal6524>;
> + interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
> + };
> +};
> +
> +&lpi2c2 {
> + clock-frequency = <400000>;
> + pinctrl-0 = <&pinctrl_lpi2c2>;
> + pinctrl-names = "default";
> + bootph-pre-ram;
> + bootph-some-ram;
> + status = "okay";
> +
> + pcal6524: gpio@22 {
> + compatible = "nxp,pcal6524";
> + reg = <0x22>;
> + #interrupt-cells = <2>;
> + interrupt-controller;
> + interrupt-parent = <&gpio3>;
> + interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
> + #gpio-cells = <2>;
> + gpio-controller;
> + pinctrl-0 = <&pinctrl_pcal6524>;
> + pinctrl-names = "default";
> + reset-gpios = <&gpio3 15 GPIO_ACTIVE_LOW>;
> + };
> +
> + pmic@32 {
> + compatible = "nxp,pf9453";
> + reg = <0x32>;
> + interrupt-parent = <&pcal6524>;
> + interrupts = <10 IRQ_TYPE_EDGE_FALLING>;
> + bootph-pre-ram;
> + bootph-some-ram;
> +
> + regulators {
> + bootph-pre-ram;
> + bootph-some-ram;
> +
> + buck1: BUCK1 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-max-microvolt = <3775000>;
> + regulator-min-microvolt = <600000>;
> + regulator-name = "BUCK1";
> + };
> +
> + buck2: BUCK2 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-max-microvolt = <2187500>;
> + regulator-min-microvolt = <600000>;
> + regulator-name = "BUCK2";
> + regulator-ramp-delay = <12500>;
> + };
> +
> + buck3: BUCK3 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-max-microvolt = <3775000>;
> + regulator-min-microvolt = <600000>;
> + regulator-name = "BUCK3";
> + };
> +
> + buck4: BUCK4 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-max-microvolt = <3775000>;
> + regulator-min-microvolt = <600000>;
> + regulator-name = "BUCK4";
> + };
> +
> + ldo1: LDO1 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-max-microvolt = <3300000>;
> + regulator-min-microvolt = <800000>;
> + regulator-name = "LDO1";
> + };
> +
> + ldo2: LDO2 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-max-microvolt = <1950000>;
> + regulator-min-microvolt = <500000>;
> + regulator-name = "LDO2";
> + };
> +
> + ldo_snvs: LDO-SNVS {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-max-microvolt = <3400000>;
> + regulator-min-microvolt = <1200000>;
> + regulator-name = "LDO-SNVS";
> + };
> + };
> + };
> +
> + ptn5110: tcpc@52 {
> + compatible = "nxp,ptn5110", "tcpci";
> + reg = <0x52>;
> + interrupt-parent = <&gpio3>;
> + interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
> +
> + typec1_con: connector {
> + compatible = "usb-c-connector";
> + data-role = "dual";
> + label = "USB-C";
> + op-sink-microwatt = <15000000>;
> + power-role = "dual";
> + self-powered;
> + sink-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)
> + PDO_VAR(5000, 20000, 3000)>;
> + source-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>;
> + try-power-role = "sink";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + typec1_dr_sw: endpoint {
> + remote-endpoint = <&usb1_drd_sw>;
> + };
> + };
> + };
> + };
> + };
> +};
> +
> +&lpuart1 {
> + pinctrl-0 = <&pinctrl_uart1>;
> + pinctrl-names = "default";
> + bootph-pre-ram;
> + bootph-some-ram;
> + status = "okay";
> +};
> +
> +&lpuart5 {
> + pinctrl-0 = <&pinctrl_uart5>;
> + pinctrl-names = "default";
> + status = "okay";
> +
> + bluetooth {
> + compatible = "nxp,88w8987-bt";
> + };
> +};
> +
> +&media_blk_ctrl {
> + status = "okay";
> +};
> +
> +&mqs1 {
> + clocks = <&clk IMX93_CLK_MQS1_GATE>;
> + clock-names = "mclk";
> + pinctrl-0 = <&pinctrl_mqs1>;
> + pinctrl-names = "default";
> + status = "okay";
> +};
> +
> +&osc_32k {
> + bootph-all;
> + bootph-pre-ram;
> +};
> +
> +&osc_24m {
> + bootph-all;
> + bootph-pre-ram;
> +};
> +
> +&sai1 {
> + clocks = <&clk IMX93_CLK_SAI1_IPG>, <&clk IMX93_CLK_DUMMY>,
> + <&clk IMX93_CLK_SAI1_GATE>, <&clk IMX93_CLK_DUMMY>,
> + <&clk IMX93_CLK_DUMMY>, <&clk IMX93_CLK_AUDIO_PLL>;
> + clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k";
> + assigned-clocks = <&clk IMX93_CLK_SAI1>;
> + assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
> + assigned-clock-rates = <24576000>;
> + #sound-dai-cells = <0>;
> + fsl,sai-mclk-direction-output;
> + status = "okay";
> +};
> +
> +&usbotg1 {
> + adp-disable;
> + disable-over-current;
> + dr_mode = "otg";
> + hnp-disable;
> + srp-disable;
> + usb-role-switch;
> + samsung,picophy-dc-vol-level-adjust = <7>;
> + samsung,picophy-pre-emp-curr-control = <3>;
> + status = "okay";
> +
> + port {
> + usb1_drd_sw: endpoint {
> + remote-endpoint = <&typec1_dr_sw>;
> + };
> + };
> +};
> +
> +&usbotg2 {
> + disable-over-current;
> + dr_mode = "host";
> + vbus-supply = <®_usb_vbus>;
> + samsung,picophy-dc-vol-level-adjust = <7>;
> + samsung,picophy-pre-emp-curr-control = <3>;
> + status = "okay";
> +};
> +
> +&usdhc1 {
> + bus-width = <8>;
> + keep-power-in-suspend;
> + mmc-pwrseq = <&usdhc1_pwrseq>;
> + non-removable;
> + pinctrl-0 = <&pinctrl_usdhc1>;
> + pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
> + pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
> + pinctrl-names = "default", "state_100mhz", "state_200mhz";
> + vmmc-supply = <®_usdhc1_vmmc>;
> + wakeup-source;
> + bootph-pre-ram;
> + bootph-some-ram;
> + status = "okay";
> +};
> +
> +&usdhc2 {
> + bus-width = <4>;
> + cd-gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
> + no-mmc;
> + no-sdio;
> + 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>;
> + pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
> + vmmc-supply = <®_usdhc2_vmmc>;
> + bootph-pre-ram;
> + bootph-some-ram;
> + status = "okay";
> +};
> +
> +&wdog3 {
> + pinctrl-0 = <&pinctrl_wdog>;
> + pinctrl-names = "default";
> + fsl,ext-reset-output;
> + status = "okay";
> +};
>
> --
> 2.43.0
>
On 2/10/2026 11:51 PM, Frank Li wrote: > On Tue, Feb 10, 2026 at 07:47:55PM +0900, Yanan Yang wrote: >> Add DeviceTree support for the NXP FRDM-IMX91S development board based >> on the i.MX91 SoC. FRDM-IMX91S is a cost-optimized variant of FRDM-IMX91 >> and differs in memory, storage, Ethernet, and PMIC configuration: >> >> - 512MB LPDDR4 (FRDM-IMX91 uses 1GB) >> - 256MB FlexSPI-NAND (FRDM-IMX91 uses 8GB eMMC) >> - Single GbE port (FRDM-IMX91 has dual GbE) >> - PMIC PF9453 (FRDM-IMX91 uses PCA9451A) > > Look like it is very similar with imx91-11x11-frdm boards. > > Can you create common dtsi for both boards > > imx91-11x11-fdrm-common.dtsi > > then imx91-11x11-fdrm-s.dts and imx91-11x11-frdm.dts included > imx91-11x11-fdrm-common.dtsi. > > You can refer below method > https://lore.kernel.org/imx/20260204083551.2867263-1-sherry.sun@nxp.com/ > > Frank Hi Frank, I think the two boards are totally different. They have different PMIC, no EMMC for FRDM-IMX91S and totally different pin assignment. So if we create a common dtsi, there will be not much duplicate code can put in. Regards, Joseph
On Tue, Feb 10, 2026 at 12:49 PM Yanan Yang <yanan.yang@nxp.com> wrote: > > Add DeviceTree support for the NXP FRDM-IMX91S development board based > on the i.MX91 SoC. FRDM-IMX91S is a cost-optimized variant of FRDM-IMX91 > and differs in memory, storage, Ethernet, and PMIC configuration: > > - 512MB LPDDR4 (FRDM-IMX91 uses 1GB) > - 256MB FlexSPI-NAND (FRDM-IMX91 uses 8GB eMMC) > - Single GbE port (FRDM-IMX91 has dual GbE) > - PMIC PF9453 (FRDM-IMX91 uses PCA9451A) > > This DT enables: > - ADC1 > - UART1 and UART5 > - I2C bus and children nodes > - USB and related nodes > - uSDHC1 and uSDHC2 > - FlexSPI NAND flash > - Watchdog3 > - Ethernet (eqos) > - FlexCAN > - MQS > > Link: https://www.nxp.com/design/design-center/development-boards-and-designs/FRDM-IMX91S > (FRDM-IMX91S board page) > Link: https://www.nxp.com/design/design-center/development-boards-and-designs/FRDM-IMX91 > (FRDM-IMX91 board page) Tested-by: Daniel Baluta <daniel.baluta@nxp.com> Used your patches on top of linux-next 20260209 and managed to boot the board using serial downloader and rootfs via nfs.
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