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- # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
- %YAML 1.2
- ---
- $id: http://devicetree.org/schemas/mtd/nand-chip.yaml#
- $schema: http://devicetree.org/meta-schemas/core.yaml#
- title: NAND Chip Common Properties
- maintainers:
- - Miquel Raynal <miquel.raynal@bootlin.com>
- allOf:
- - $ref: mtd.yaml#
- description: |
- This file covers the generic description of a NAND chip. It implies that the
- bus interface should not be taken into account: both raw NAND devices and
- SPI-NAND devices are concerned by this description.
- properties:
- reg:
- description:
- Contains the chip-select IDs.
- nand-ecc-engine:
- description: |
- A phandle on the hardware ECC engine if any. There are
- basically three possibilities:
- 1/ The ECC engine is part of the NAND controller, in this
- case the phandle should reference the parent node.
- 2/ The ECC engine is part of the NAND part (on-die), in this
- case the phandle should reference the node itself.
- 3/ The ECC engine is external, in this case the phandle should
- reference the specific ECC engine node.
- $ref: /schemas/types.yaml#/definitions/phandle
- nand-use-soft-ecc-engine:
- description: Use a software ECC engine.
- type: boolean
- nand-no-ecc-engine:
- description: Do not use any ECC correction.
- type: boolean
- nand-ecc-algo:
- description:
- Desired ECC algorithm.
- $ref: /schemas/types.yaml#/definitions/string
- enum: [hamming, bch, rs]
- nand-ecc-strength:
- description:
- Maximum number of bits that can be corrected per ECC step.
- $ref: /schemas/types.yaml#/definitions/uint32
- minimum: 1
- nand-ecc-step-size:
- description:
- Number of data bytes covered by a single ECC step.
- $ref: /schemas/types.yaml#/definitions/uint32
- minimum: 1
- secure-regions:
- description:
- Regions in the NAND chip which are protected using a secure element
- like Trustzone. This property contains the start address and size of
- the secure regions present.
- $ref: /schemas/types.yaml#/definitions/uint64-matrix
- required:
- - reg
- # This file can be referenced by more specific devices (like spi-nands)
- additionalProperties: true
|
