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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 |