ingenic,nand.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/mtd/ingenic,nand.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Ingenic SoCs NAND controller
  8
  9maintainers:
 10  - Paul Cercueil <paul@crapouillou.net>
 11
 12allOf:
 13  - $ref: nand-controller.yaml#
 14  - $ref: /schemas/memory-controllers/ingenic,nemc-peripherals.yaml#
 15
 16properties:
 17  compatible:
 18    enum:
 19      - ingenic,jz4740-nand
 20      - ingenic,jz4725b-nand
 21      - ingenic,jz4780-nand
 22
 23  reg:
 24    items:
 25      - description: Bank number, offset and size of first attached NAND chip
 26      - description: Bank number, offset and size of second attached NAND chip
 27      - description: Bank number, offset and size of third attached NAND chip
 28      - description: Bank number, offset and size of fourth attached NAND chip
 29    minItems: 1
 30
 31  ecc-engine: true
 32
 33  partitions:
 34    type: object
 35    deprecated: true
 36    description:
 37      Node containing description of fixed partitions.
 38
 39patternProperties:
 40  "^nand@[a-f0-9]$":
 41    type: object
 42    $ref: raw-nand-chip.yaml
 43    properties:
 44
 45      rb-gpios:
 46        description: GPIO specifier for the busy pin.
 47        maxItems: 1
 48
 49      wp-gpios:
 50        description: GPIO specifier for the write-protect pin.
 51        maxItems: 1
 52
 53    unevaluatedProperties: false
 54
 55required:
 56  - compatible
 57  - reg
 58
 59unevaluatedProperties: false
 60
 61examples:
 62  - |
 63    #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
 64    memory-controller@13410000 {
 65        compatible = "ingenic,jz4780-nemc";
 66        reg = <0x13410000 0x10000>;
 67        #address-cells = <2>;
 68        #size-cells = <1>;
 69        ranges = <1 0 0x1b000000 0x1000000>,
 70                 <2 0 0x1a000000 0x1000000>,
 71                 <3 0 0x19000000 0x1000000>,
 72                 <4 0 0x18000000 0x1000000>,
 73                 <5 0 0x17000000 0x1000000>,
 74                 <6 0 0x16000000 0x1000000>;
 75
 76        clocks = <&cgu JZ4780_CLK_NEMC>;
 77
 78        nand-controller@1 {
 79            compatible = "ingenic,jz4780-nand";
 80            reg = <1 0 0x1000000>;
 81
 82            #address-cells = <1>;
 83            #size-cells = <0>;
 84
 85            ecc-engine = <&bch>;
 86
 87            ingenic,nemc-tAS = <10>;
 88            ingenic,nemc-tAH = <5>;
 89            ingenic,nemc-tBP = <10>;
 90            ingenic,nemc-tAW = <15>;
 91            ingenic,nemc-tSTRV = <100>;
 92
 93            pinctrl-names = "default";
 94            pinctrl-0 = <&pins_nemc>;
 95
 96            nand@1 {
 97                reg = <1>;
 98
 99                nand-ecc-step-size = <1024>;
100                nand-ecc-strength = <24>;
101                nand-ecc-mode = "hw";
102                nand-on-flash-bbt;
103
104                pinctrl-names = "default";
105                pinctrl-0 = <&pins_nemc_cs1>;
106
107                partitions {
108                    compatible = "fixed-partitions";
109                    #address-cells = <2>;
110                    #size-cells = <2>;
111
112                    partition@0 {
113                        label = "u-boot-spl";
114                        reg = <0x0 0x0 0x0 0x800000>;
115                    };
116
117                    partition@800000 {
118                        label = "u-boot";
119                        reg = <0x0 0x800000 0x0 0x200000>;
120                    };
121
122                    partition@a00000 {
123                        label = "u-boot-env";
124                        reg = <0x0 0xa00000 0x0 0x200000>;
125                    };
126
127                    partition@c00000 {
128                        label = "boot";
129                        reg = <0x0 0xc00000 0x0 0x4000000>;
130                    };
131
132                    partition@4c00000 {
133                        label = "system";
134                        reg = <0x0 0x4c00000 0x1 0xfb400000>;
135                    };
136                };
137            };
138        };
139    };