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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
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