Documentation/devicetree/bindings/memory-controllers/ti,gpmc-child.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/memory-controllers/ti,gpmc-child.yaml

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Linux kernel
Corpus path
Documentation/devicetree/bindings/memory-controllers/ti,gpmc-child.yaml
Extension
.yaml
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6487 bytes
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253
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

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Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/memory-controllers/ti,gpmc-child.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Texas Instruments GPMC Bus Child Nodes

maintainers:
  - Tony Lindgren <tony@atomide.com>
  - Roger Quadros <rogerq@kernel.org>

description:
  This binding is meant for the child nodes of the GPMC node. The node
  represents any device connected to the GPMC bus. It may be a Flash chip,
  RAM chip or Ethernet controller, etc. These properties are meant for
  configuring the GPMC settings/timings and will accompany the bindings
  supported by the respective device.

properties:
  reg: true

# GPMC Timing properties for child nodes. All are optional and default to 0.
  gpmc,sync-clk-ps:
    description: Minimum clock period for synchronous mode
    default: 0

# Chip-select signal timings corresponding to GPMC_CONFIG2:
  gpmc,cs-on-ns:
    description: Assertion time
    default: 0

  gpmc,cs-rd-off-ns:
    description: Read deassertion time
    default: 0

  gpmc,cs-wr-off-ns:
    description: Write deassertion time
    default: 0

# ADV signal timings corresponding to GPMC_CONFIG3:
  gpmc,adv-on-ns:
    description: Assertion time
    default: 0

  gpmc,adv-rd-off-ns:
    description: Read deassertion time
    default: 0

  gpmc,adv-wr-off-ns:
    description: Write deassertion time
    default: 0

  gpmc,adv-aad-mux-on-ns:
    description: Assertion time for AAD
    default: 0

  gpmc,adv-aad-mux-rd-off-ns:
    description: Read deassertion time for AAD
    default: 0

  gpmc,adv-aad-mux-wr-off-ns:
    description: Write deassertion time for AAD
    default: 0

# WE signals timings corresponding to GPMC_CONFIG4:
  gpmc,we-on-ns:
    description: Assertion time
    default: 0

Annotation

Implementation Notes