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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/mtd/nand-chip.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: NAND Chip Common Properties8 9maintainers:10 - Miquel Raynal <miquel.raynal@bootlin.com>11 12allOf:13 - $ref: mtd.yaml#14 15description: |16 This file covers the generic description of a NAND chip. It implies that the17 bus interface should not be taken into account: both raw NAND devices and18 SPI-NAND devices are concerned by this description.19 20properties:21 reg:22 description:23 Contains the chip-select IDs.24 25 nand-ecc-engine:26 description: |27 A phandle on the hardware ECC engine if any. There are28 basically three possibilities:29 1/ The ECC engine is part of the NAND controller, in this30 case the phandle should reference the parent node.31 2/ The ECC engine is part of the NAND part (on-die), in this32 case the phandle should reference the node itself.33 3/ The ECC engine is external, in this case the phandle should34 reference the specific ECC engine node.35 $ref: /schemas/types.yaml#/definitions/phandle36 37 nand-use-soft-ecc-engine:38 description: Use a software ECC engine.39 type: boolean40 41 nand-no-ecc-engine:42 description: Do not use any ECC correction.43 type: boolean44 45 nand-ecc-algo:46 description:47 Desired ECC algorithm.48 $ref: /schemas/types.yaml#/definitions/string49 enum: [hamming, bch, rs]50 51 nand-ecc-strength:52 description:53 Maximum number of bits that can be corrected per ECC step.54 $ref: /schemas/types.yaml#/definitions/uint3255 minimum: 156 57 nand-ecc-step-size:58 description:59 Number of data bytes covered by a single ECC step.60 $ref: /schemas/types.yaml#/definitions/uint3261 minimum: 162 63 secure-regions:64 description:65 Regions in the NAND chip which are protected using a secure element66 like Trustzone. This property contains the start address and size of67 the secure regions present.68 $ref: /schemas/types.yaml#/definitions/uint64-matrix69 70required:71 - reg72 73# This file can be referenced by more specific devices (like spi-nands)74additionalProperties: true75