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-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/memory-controllers/ddr/jedec,lpddr-props.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Common properties for LPDDR types
-
-description:
- Different LPDDR types generally use the same properties and only differ in the
- range of legal values for each. This file defines the common parts that can be
- reused for each type. Nodes using this schema should generally be nested under
- an LPDDR channel node.
-
-maintainers:
- - Krzysztof Kozlowski <krzk@kernel.org>
-
-properties:
- compatible:
- description:
- Compatible strings can be either explicit vendor names and part numbers
- (e.g. elpida,ECB240ABACN), or generated strings of the form
- lpddrX-YY,ZZZZ where X is the LPDDR version, YY is the manufacturer ID
- (from MR5) and ZZZZ is the revision ID (from MR6 and MR7). Both IDs are
- formatted in lower case hexadecimal representation with leading zeroes.
- The latter form can be useful when LPDDR nodes are created at runtime by
- boot firmware that doesn't have access to static part number information.
-
- reg:
- description:
- The rank number of this LPDDR rank when used as a subnode to an LPDDR
- channel.
- minimum: 0
- maximum: 3
-
- revision-id:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- description:
- Revision IDs read from Mode Register 6 and 7. One byte per uint32 cell (i.e. <MR6 MR7>).
- maxItems: 2
- items:
- minimum: 0
- maximum: 255
-
- density:
- $ref: /schemas/types.yaml#/definitions/uint32
- description:
- Density in megabits of SDRAM chip. Decoded from Mode Register 8.
- enum:
- - 64
- - 128
- - 256
- - 512
- - 1024
- - 2048
- - 3072
- - 4096
- - 6144
- - 8192
- - 12288
- - 16384
- - 24576
- - 32768
-
- io-width:
- $ref: /schemas/types.yaml#/definitions/uint32
- description:
- IO bus width in bits of SDRAM chip. Decoded from Mode Register 8.
- enum:
- - 8
- - 16
- - 32
-
-additionalProperties: true