Documentation/devicetree/bindings/pci/qcom,sa8255p-pcie-ep.yaml
Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pci/qcom,sa8255p-pcie-ep.yaml
File Facts
- System
- Linux kernel
- Corpus path
Documentation/devicetree/bindings/pci/qcom,sa8255p-pcie-ep.yaml- Extension
.yaml- Size
- 2929 bytes
- Lines
- 111
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: configuration, schema, or hardware description
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
dt-bindings/gpio/gpio.hdt-bindings/interrupt-controller/arm-gic.h
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pci/qcom,sa8255p-pcie-ep.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm firmware managed PCIe Endpoint Controller
description:
Qualcomm SA8255p SoC PCIe endpoint controller is based on the Synopsys
DesignWare PCIe IP which is managed by firmware.
maintainers:
- Manivannan Sadhasivam <mani@kernel.org>
properties:
compatible:
const: qcom,sa8255p-pcie-ep
reg:
items:
- description: Qualcomm-specific PARF configuration registers
- description: DesignWare PCIe registers
- description: External local bus interface registers
- description: Address Translation Unit (ATU) registers
- description: Memory region used to map remote RC address space
- description: BAR memory region
- description: DMA register space
reg-names:
items:
- const: parf
- const: dbi
- const: elbi
- const: atu
- const: addr_space
- const: mmio
- const: dma
interrupts:
items:
- description: PCIe Global interrupt
- description: PCIe Doorbell interrupt
- description: DMA interrupt
interrupt-names:
items:
- const: global
- const: doorbell
- const: dma
iommus:
maxItems: 1
reset-gpios:
description: GPIO used as PERST# input signal
maxItems: 1
wake-gpios:
description: GPIO used as WAKE# output signal
maxItems: 1
power-domains:
maxItems: 1
dma-coherent: true
num-lanes:
default: 2
Annotation
- Immediate include surface: `dt-bindings/gpio/gpio.h`, `dt-bindings/interrupt-controller/arm-gic.h`.
- Atlas domain: Support Tooling And Documentation / Documentation.
- 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.