arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-m2con.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-m2con.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-m2con.dtsi
Extension
.dtsi
Size
1329 bytes
Lines
61
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright 2025 Josua Mayer <josua@solid-run.com>
 */

/ {
	rfkill-m2-gnss {
		compatible = "rfkill-gpio";
		pinctrl-names = "default";
		pinctrl-0 = <&m2_gnss_rfkill_pins>;
		label = "m.2 GNSS";
		radio-type = "gps";
		/* rfkill-gpio inverts internally */
		shutdown-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
	};

	/* M.2 is B-keyed, so w-disable is for WWAN */
	rfkill-m2-wwan {
		compatible = "rfkill-gpio";
		pinctrl-names = "default";
		pinctrl-0 = <&m2_wwan_rfkill_pins>;
		label = "m.2 WWAN";
		radio-type = "wwan";
		/* rfkill-gpio inverts internally */
		shutdown-gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;
	};
};

&iomuxc {
	m2_gnss_rfkill_pins: pinctrl-m2-gnss-rfkill-grp {
		fsl,pins = <
			/* weak i/o, open drain */
			MX8MP_IOMUXC_GPIO1_IO07__GPIO1_IO07		0x20
		>;
	};

	m2_reset_pins: pinctrl-m2-reset-grp {
		fsl,pins = <
			/*
			 * 3.3V domain on SoC, set open-drain to ensure
			 * 1.8V logic on connector
			 */
			MX8MP_IOMUXC_GPIO1_IO06__GPIO1_IO06		0x20
		>;
	};

	m2_wwan_rfkill_pins: pinctrl-m2-wwan-rfkill-grp {
		fsl,pins = <
			/* weak i/o, open drain */
			MX8MP_IOMUXC_GPIO1_IO13__GPIO1_IO13		0x20
		>;
	};

	m2_wwan_wake_pins: pinctrl-m2-wwan-wake-grp {
		fsl,pins = <
			/* weak i/o, open drain */
			MX8MP_IOMUXC_GPIO1_IO12__GPIO1_IO12		0x20
		>;
	};
};

Annotation

Implementation Notes