nand-chip.yaml (2119B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/mtd/nand-chip.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: NAND Chip and NAND Controller Generic Binding 8 9maintainers: 10 - Miquel Raynal <miquel.raynal@bootlin.com> 11 12description: | 13 This file covers the generic description of a NAND chip. It implies that the 14 bus interface should not be taken into account: both raw NAND devices and 15 SPI-NAND devices are concerned by this description. 16 17properties: 18 reg: 19 description: 20 Contains the chip-select IDs. 21 22 nand-ecc-engine: 23 description: | 24 A phandle on the hardware ECC engine if any. There are 25 basically three possibilities: 26 1/ The ECC engine is part of the NAND controller, in this 27 case the phandle should reference the parent node. 28 2/ The ECC engine is part of the NAND part (on-die), in this 29 case the phandle should reference the node itself. 30 3/ The ECC engine is external, in this case the phandle should 31 reference the specific ECC engine node. 32 $ref: /schemas/types.yaml#/definitions/phandle 33 34 nand-use-soft-ecc-engine: 35 description: Use a software ECC engine. 36 type: boolean 37 38 nand-no-ecc-engine: 39 description: Do not use any ECC correction. 40 type: boolean 41 42 nand-ecc-algo: 43 description: 44 Desired ECC algorithm. 45 $ref: /schemas/types.yaml#/definitions/string 46 enum: [hamming, bch, rs] 47 48 nand-ecc-strength: 49 description: 50 Maximum number of bits that can be corrected per ECC step. 51 $ref: /schemas/types.yaml#/definitions/uint32 52 minimum: 1 53 54 nand-ecc-step-size: 55 description: 56 Number of data bytes covered by a single ECC step. 57 $ref: /schemas/types.yaml#/definitions/uint32 58 minimum: 1 59 60 secure-regions: 61 description: 62 Regions in the NAND chip which are protected using a secure element 63 like Trustzone. This property contains the start address and size of 64 the secure regions present. 65 $ref: /schemas/types.yaml#/definitions/uint64-matrix 66 67required: 68 - reg 69 70additionalProperties: true