Re: [PATCH v1 11/12] arm: dts: Add U-Boot device tree for i.MX952 EVK

Peng Fan
2026-02-06T00:49:58Z

On Thu, Feb 05, 2026 at 09:55:17PM +0800, alice.guo@oss.nxp.com wrote:
>From: Alice Guo <alice.guo@nxp.com>
>
>Add U-Boot specific device tree configuration for i.MX952 EVK board.
>
>Signed-off-by: Alice Guo <alice.guo@nxp.com>
>---
> arch/arm/dts/imx952-evk-u-boot.dtsi | 58 +++++++
> arch/arm/dts/imx952-u-boot.dtsi | 327 ++++++++++++++++++++++++++++++++++++
> 2 files changed, 385 insertions(+)
>
>diff --git a/arch/arm/dts/imx952-evk-u-boot.dtsi b/arch/arm/dts/imx952-evk-u-boot.dtsi
>new file mode 100644
>index 00000000000..1b2c314a41b
>--- /dev/null
>+++ b/arch/arm/dts/imx952-evk-u-boot.dtsi
>@@ -0,0 +1,58 @@
>+// SPDX-License-Identifier: GPL-2.0+
>+/*
>+ * Copyright 2026 NXP
>+ */
>+
>+#include "imx952-u-boot.dtsi"
>+
>+&i2c3_pcal6408 {
>+ compatible = "ti,tca6408";
>+ label = "i2c3_io";
>+};
>+
>+&i2c4_pcal6408 {
>+ compatible = "ti,tca6408";
>+ label = "i2c4_io";
>+};
>+
>+&pcal6416 {
>+ compatible = "ti,tca6416";
>+ label = "i2c6_io";
>+};
>+
>+&pcal6524 {
>+ label = "i2c7_io";
>+};
>+
>+&usb1 {
>+ compatible = "fsl,imx8mm-usb", "fsl,imx7d-usb";
>+ /delete-property/power-domains;
>+ bootph-pre-ram;
>+ extcon = <&ptn5110>;
>+};
>+
>+&usb2 {
>+ compatible = "fsl,imx8mm-usb", "fsl,imx7d-usb";
>+ /delete-property/power-domains;
>+ bootph-pre-ram;
>+};
>+
>+&usbmisc1 {
>+ bootph-pre-ram;
>+};
>+
>+&usbmisc2 {
>+ bootph-pre-ram;
>+};
>+
>+&usbphynop1 {
>+ bootph-pre-ram;
>+};
>+
>+&usbphynop2 {
>+ bootph-pre-ram;
>+};
>+
>+&wdog3 {
>+ status = "disabled";
>+};
>diff --git a/arch/arm/dts/imx952-u-boot.dtsi b/arch/arm/dts/imx952-u-boot.dtsi
>new file mode 100644
>index 00000000000..208931ba884
>--- /dev/null
>+++ b/arch/arm/dts/imx952-u-boot.dtsi
>@@ -0,0 +1,327 @@
>+// SPDX-License-Identifier: GPL-2.0+
>+/*
>+ * Copyright 2026 NXP
>+ */
>+
>+/ {
>+ binman {
>+ multiple-images;
>+
>+ m33-oei-ddrfw {
>+ pad-byte = <0x00>;
>+ align-size = <0x8>;
>+ filename = "m33-oei-ddrfw.bin";
>+
>+ oei-m33-ddr {
>+ align-size = <0x4>;
>+ filename = "oei-m33-ddr.bin";
>+ type = "blob-ext";
>+ };
>+
>+ imx-lpddr {
>+ type = "nxp-header-ddrfw";
>+
>+ imx-lpddr-imem {
>+ filename = "lpddr4x_imem_v202409.bin";
>+ type = "blob-ext";
>+ };
>+
>+ imx-lpddr-dmem {
>+ filename = "lpddr4x_dmem_v202409.bin";
>+ type = "blob-ext";
>+ };
>+ };
>+
>+ imx-lpddr-qb {
>+ type = "nxp-header-ddrfw";
>+
>+ imx-lpddr-imem-qb {
>+ filename = "lpddr4x_imem_qb_v202409.bin";
>+ type = "blob-ext";
>+ };
>+
>+ imx-lpddr-dmem-qb {
>+ filename = "lpddr4x_dmem_qb_v202409.bin";
>+ type = "blob-ext";
>+ };
>+ };
>+ };
>+
>+ imx-boot {
>+ filename = "flash.bin";
>+ pad-byte = <0x00>;
>+
>+ spl {
>+ type = "nxp-imx9image";
>+ cfg-path = "spl/u-boot-spl.cfgout";
>+ args;
>+
>+ cntr-version = <2>;
>+ boot-from = "sd";
>+ soc-type = "IMX9";
>+ append = "mx952a0-ahab-container.img";
>+ container;
>+ dummy-ddr;
>+ image0 = "oei", "m33-oei-ddrfw.bin", "0x1ffc0000";
>+ hold = <0x10000>;
>+ image1 = "m33", "m33_image.bin", "0x1ffc0000";
>+ image2 = "a55", "spl/u-boot-spl.bin", "0x20480000";
>+ dummy-v2x = <0x8b000000>;
>+ };
>+
>+ u-boot {
>+ type = "nxp-imx9image";
>+ cfg-path = "u-boot-container.cfgout";
>+ args;
>+
>+ cntr-version = <2>;
>+ boot-from = "sd";
>+ soc-type = "IMX9";
>+ container;
>+ image0 = "a55", "bl31.bin", "0x8a200000";
>+ image1 = "a55", "u-boot.bin", "0x90200000";
>+ };
>+ };
>+ };
>+
>+ chosen {
>+ bootargs = "console=ttyLP0,115200 earlycon";
>+ };
>+
>+ aliases {
>+ usb_gadget0 = &usbg1;
>+ usb_gadget1 = &usbg2;
>+ };
>+
>+ usbg1: usbg1 {
>+ compatible = "fsl,imx27-usb-gadget";
>+ dr_mode = "peripheral";
>+ chipidea,usb = <&usb1>;
>+ bootph-pre-ram;
>+ status = "okay";
>+ };
>+
>+ usbg2: usbg2 {
>+ compatible = "fsl,imx27-usb-gadget";
>+ dr_mode = "peripheral";
>+ chipidea,usb = <&usb2>;
>+ bootph-pre-ram;
>+ status = "okay";
>+ };

The above two nodes does not have a working driver in upstream.

>+
>+ reg_m2_pwr: regulator-m2-pwr {
>+ compatible = "regulator-fixed";
>+ regulator-name = "M.2-power";
>+ regulator-min-microvolt = <3300000>;
>+ regulator-max-microvolt = <3300000>;
>+ gpio = <&pcal6524 20 GPIO_ACTIVE_HIGH>;
>+ enable-active-high;
>+ /*
>+ * M.2 device only can be enabled(W_DISABLE1#) after all Power
>+ * Rails reach their minimum operating voltage (PCI Express M.2
>+ * Specification r5.1 3.1.4 Power-up Timing).
>+ * Set a delay equal to the max value of Tsettle here.
>+ */
>+ startup-delay-us = <5000>;
>+ };
>+};
>+
>+&A55_0 {
>+ clocks = <&scmi_clk IMX952_CLK_ARMPLL_PFD0>;
>+ /delete-property/ power-domains;
>+};
>+
>+&A55_1 {
>+ clocks = <&scmi_clk IMX952_CLK_ARMPLL_PFD0>;
>+ /delete-property/ power-domains;
>+};
>+
>+&A55_2 {
>+ clocks = <&scmi_clk IMX952_CLK_ARMPLL_PFD0>;
>+ /delete-property/ power-domains;
>+};
>+
>+&A55_3 {
>+ clocks = <&scmi_clk IMX952_CLK_ARMPLL_PFD0>;
>+ /delete-property/ power-domains;
>+};
>+
>+&aips1 {
>+ bootph-all;
>+};
>+
>+&aips2 {
>+ bootph-all;
>+};
>+
>+&aips3 {
>+ bootph-all;
>+};
>+
>+&clk_ext1 {
>+ bootph-all;
>+};
>+
>+&clk_dummy {
>+ bootph-all;
>+};
>+
>+&clk_osc_24m {
>+ bootph-all;
>+};
>+
>+&elemu1 {
>+ status = "okay";
>+ bootph-all;
>+};
>+
>+&elemu3 {
>+ status = "okay";
>+ bootph-all;
>+};
>+
>+&{/firmware} {
>+ bootph-all;
>+};
>+
>+&{/firmware/scmi} {
>+ bootph-all;
>+};
>+
>+&{/firmware/scmi/protocol@11} {
>+ bootph-all;
>+};
>+
>+&{/firmware/scmi/protocol@13} {
>+ bootph-all;
>+};
>+
>+&{/firmware/scmi/protocol@14} {
>+ bootph-all;
>+};
>+
>+&{/firmware/scmi/protocol@15} {
>+ bootph-all;
>+};
>+
>+&{/firmware/scmi/protocol@19} {
>+ bootph-all;
>+};
>+
>+&gpio1 {
>+ reg = <0 0x47400000 0 0x1000>, <0 0x47400040 0 0x40>;
>+};
>+
>+&gpio2 {
>+ reg = <0 0x43810000 0 0x1000>, <0 0x43810040 0 0x40>;
>+ bootph-pre-ram;
>+ /*
>+ * Use one SPL/U-Boot for mx952evk and mx952evkrpmsg, since GPIO2
>+ * is assigned to M7, disable gpio2 here
>+ */
>+ status = "disabled";
>+};
>+
>+&gpio3 {
>+ reg = <0 0x43820000 0 0x1000>, <0 0x43820040 0 0x40>;
>+ bootph-pre-ram;
>+};
>+
>+&gpio4 {
>+ reg = <0 0x43840000 0 0x1000>, <0 0x43840040 0 0x40>;
>+ bootph-pre-ram;
>+};
>+
>+&gpio5 {
>+ reg = <0 0x43850000 0 0x1000>, <0 0x43850040 0 0x40>;
>+ bootph-pre-ram;
>+};
>+
>+&lpuart1 {
>+ bootph-pre-ram;
>+};
>+
>+&mu2 {
>+ bootph-all;
>+};
>+
>+&reg_usdhc2_vmmc {
>+ bootph-pre-ram;
>+};
>+
>+&scmi_buf0 {
>+ reg = <0x0 0x400>;
>+ bootph-all;
>+};
>+
>+&scmi_buf1 {
>+ bootph-all;
>+};
>+
>+&{/soc} {
>+ bootph-all;
>+};
>+
>+&sram0 {
>+ bootph-all;
>+};
>+
>+&usdhc1 {
>+ bootph-pre-ram;
>+};
>+
>+&usdhc2 {
>+ bootph-pre-ram;
>+};
>+
>+&scmi_iomuxc {
>+ pinctrl-names = "default";
>+ pinctrl-0 = <&pinctrl_hog>;
>+
>+ pinctrl_hog: hoggrp {
>+ bootph-pre-ram;
>+
>+ fsl,pins = <
>+ IMX952_PAD_XSPI1_SS1_B__WAKEUPMIX_TOP_GPIO5_IO_11 0x3fe
>+ IMX952_PAD_GPIO_IO12__WAKEUPMIX_TOP_TPM3_CH2 0x51e
>+ IMX952_PAD_CCM_CLKO1__WAKEUPMIX_TOP_GPIO3_IO_26 0x3fe
>+ IMX952_PAD_CCM_CLKO2__WAKEUPMIX_TOP_GPIO3_IO_27 0x3fe
>+ >;

Add a comment for the settings, why they needs to be set in hog.

>+ };
>+};
>+
>+&pinctrl_uart1 {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_usdhc1 {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_usdhc1_100mhz {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_usdhc1_200mhz {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_usdhc2 {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_usdhc2_100mhz {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_usdhc2_200mhz {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_usdhc2_gpio {
>+ bootph-pre-ram;
>+};
>+
>+&pinctrl_reg_usdhc2_vmmc {
>+ bootph-pre-ram;
>+};

Regards
Peng
>
>--
>2.43.0
>