Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml
Extension
.yaml
Size
1327 bytes
Lines
55
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.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/perf/amlogic,g12-ddr-pmu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Amlogic G12 DDR performance monitor

maintainers:
  - Jiucheng Xu <jiucheng.xu@amlogic.com>

description: |
  Amlogic G12 series SoC integrate DDR bandwidth monitor.
  A timer is inside and can generate interrupt when timeout.
  The bandwidth is counted in the timer ISR. Different platform
  has different subset of event format attribute.

properties:
  compatible:
    enum:
      - amlogic,g12a-ddr-pmu
      - amlogic,g12b-ddr-pmu
      - amlogic,sm1-ddr-pmu

  reg:
    items:
      - description: DMC bandwidth register space.
      - description: DMC PLL register space.

  interrupts:
    items:
      - description: The IRQ of the inside timer timeout.

required:
  - compatible
  - reg
  - interrupts

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    pmu {
        #address-cells = <2>;
        #size-cells = <2>;

        pmu@ff638000 {
            compatible = "amlogic,g12a-ddr-pmu";
            reg = <0x0 0xff638000 0x0 0x100>,
                  <0x0 0xff638c00 0x0 0x100>;
            interrupts = <GIC_SPI 52 IRQ_TYPE_EDGE_RISING>;
        };
    };

Annotation

Implementation Notes