Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.yaml
Extension
.yaml
Size
6994 bytes
Lines
250
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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Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra20-emc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVIDIA Tegra20 SoC External Memory Controller

maintainers:
  - Dmitry Osipenko <digetx@gmail.com>
  - Jon Hunter <jonathanh@nvidia.com>
  - Thierry Reding <thierry.reding@gmail.com>

description: |
  The External Memory Controller (EMC) interfaces with the off-chip SDRAM to
  service the request stream sent from Memory Controller. The EMC also has
  various performance-affecting settings beyond the obvious SDRAM configuration
  parameters and initialization settings. Tegra20 EMC supports multiple JEDEC
  standard protocols: DDR1, LPDDR2 and DDR2.

properties:
  compatible:
    const: nvidia,tegra20-emc

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  interrupts:
    maxItems: 1

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

  "#interconnect-cells":
    const: 0

  nvidia,memory-controller:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      Phandle of the Memory Controller node.

  power-domains:
    maxItems: 1
    description:
      Phandle of the SoC "core" power domain.

  operating-points-v2:
    description:
      Should contain freqs and voltages and opp-supported-hw property, which
      is a bitfield indicating SoC process ID mask.

  nvidia,use-ram-code:
    type: boolean
    description:
      If present, the emc-tables@ sub-nodes will be addressed.

$defs:
  emc-table:
    type: object
    properties:
      compatible:
        const: nvidia,tegra20-emc-table

      clock-frequency:

Annotation

Implementation Notes