Documentation/devicetree/bindings/mmc/wm,wm8505-sdhc.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/mmc/wm,wm8505-sdhc.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/mmc/wm,wm8505-sdhc.yaml
Extension
.yaml
Size
1594 bytes
Lines
67
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/mmc/wm,wm8505-sdhc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: WonderMedia SoC SDHCI Controller

maintainers:
  - Alexey Charkov <alchark@gmail.com>

allOf:
  - $ref: mmc-controller.yaml#

properties:
  compatible:
    oneOf:
      - const: wm,wm8505-sdhc
      - items:
          - const: wm,wm8650-sdhc
          - const: wm,wm8505-sdhc
      - items:
          - const: wm,wm8750-sdhc
          - const: wm,wm8505-sdhc
      - items:
          - const: wm,wm8850-sdhc
          - const: wm,wm8505-sdhc

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  interrupts:
    items:
      - description: SDMMC controller interrupt
      - description: SDMMC controller DMA interrupt

  sdon-inverted:
    type: boolean
    description: All chips before (not including) WM8505 rev. A2 treated their
      "clock stop" bit (register offset 0x08 a.k.a. SDMMC_BUSMODE, bit 0x10)
      as "set 1 to disable SD clock", while all the later versions treated it
      as "set 0 to disable SD clock". Set this property for later versions of
      wm,wm8505-sdhc. On wm,wm8650-sdhc and later this property is implied and
      does not need to be set explicitly

required:
  - compatible
  - reg
  - interrupts
  - clocks

unevaluatedProperties: false

examples:
  - |
    mmc@d800a000 {
        compatible = "wm,wm8505-sdhc";
        reg = <0xd800a000 0x1000>;
        interrupts = <20>, <21>;
        clocks = <&sdhc>;
        bus-width = <4>;
        sdon-inverted;
    };

Annotation

Implementation Notes