Documentation/devicetree/bindings/clock/renesas,r9a08g045-vbattb.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/clock/renesas,r9a08g045-vbattb.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/clock/renesas,r9a08g045-vbattb.yaml
Extension
.yaml
Size
2068 bytes
Lines
85
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.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/renesas,r9a08g045-vbattb.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas Battery Backup Function (VBATTB)

description:
  Renesas VBATTB is an always on powered module (backed by battery) which
  controls the RTC clock (VBATTCLK), tamper detection logic and a small
  general usage memory (128B).

maintainers:
  - Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

properties:
  compatible:
    const: renesas,r9a08g045-vbattb

  reg:
    maxItems: 1

  interrupts:
    items:
      - description: tamper detector interrupt

  clocks:
    items:
      - description: VBATTB module clock
      - description: RTC input clock (crystal or external clock device)

  clock-names:
    items:
      - const: bclk
      - const: rtx

  '#clock-cells':
    const: 1

  power-domains:
    maxItems: 1

  resets:
    items:
      - description: VBATTB module reset

  quartz-load-femtofarads:
    description: load capacitance of the on board crystal
    enum: [ 4000, 7000, 9000, 12500 ]
    default: 4000

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names
  - '#clock-cells'
  - power-domains
  - resets

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/r9a08g045-cpg.h>
    #include <dt-bindings/clock/renesas,r9a08g045-vbattb.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/interrupt-controller/irq.h>

Annotation

Implementation Notes