arch/arm/boot/dts/allwinner/sun8i-r40-feta40i.dtsi
Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/allwinner/sun8i-r40-feta40i.dtsi
File Facts
- System
- Linux kernel
- Corpus path
arch/arm/boot/dts/allwinner/sun8i-r40-feta40i.dtsi- Extension
.dtsi- Size
- 2479 bytes
- Lines
- 119
- Domain
- Architecture Layer
- Bucket
- arch/arm
- 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.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Dependency Surface
sun8i-r40.dtsisun8i-r40-cpu-opp.dtsiaxp22x.dtsi
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0+ OR MIT
// Copyright (C) 2021 Ivan Uvarov <i.uvarov@cognitivepilot.com>
// Based on the sun8i-r40-bananapi-m2-ultra.dts, which is:
// Copyright (C) 2017 Chen-Yu Tsai <wens@csie.org>
// Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
#include "sun8i-r40.dtsi"
#include "sun8i-r40-cpu-opp.dtsi"
&cpu0 {
cpu-supply = <®_dcdc2>;
};
&i2c0 {
status = "okay";
axp22x: pmic@34 {
compatible = "x-powers,axp221";
reg = <0x34>;
interrupt-parent = <&nmi_intc>;
interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
};
};
#include "axp22x.dtsi"
&mmc2 {
vmmc-supply = <®_dcdc1>;
vqmmc-supply = <®_aldo2>;
bus-width = <8>;
non-removable;
status = "okay";
};
&pio {
pinctrl-names = "default";
pinctrl-0 = <&clk_out_a_pin>;
vcc-pa-supply = <®_dcdc1>;
vcc-pc-supply = <®_aldo2>;
vcc-pd-supply = <®_dcdc1>;
vcc-pf-supply = <®_dldo4>;
vcc-pg-supply = <®_dldo1>;
};
®_aldo1 {
regulator-always-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc-3v3-tv-usb";
};
®_aldo2 {
regulator-always-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-name = "vcc-pa";
};
®_aldo3 {
regulator-always-on;
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
regulator-name = "avcc";
};
®_dcdc1 {
regulator-always-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc-3v3";
Annotation
- Immediate include surface: `sun8i-r40.dtsi`, `sun8i-r40-cpu-opp.dtsi`, `axp22x.dtsi`.
- Atlas domain: Architecture Layer / arch/arm.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.