st,stm32-fmc2-nand.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/mtd/st,stm32-fmc2-nand.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: STMicroelectronics Flexible Memory Controller 2 (FMC2)
  8
  9maintainers:
 10  - Christophe Kerello <christophe.kerello@foss.st.com>
 11
 12properties:
 13  compatible:
 14    enum:
 15      - st,stm32mp15-fmc2
 16      - st,stm32mp1-fmc2-nfc
 17      - st,stm32mp25-fmc2-nfc
 18
 19  reg:
 20    minItems: 6
 21    maxItems: 12
 22
 23  interrupts:
 24    maxItems: 1
 25
 26  dmas:
 27    items:
 28      - description: tx DMA channel
 29      - description: rx DMA channel
 30      - description: ecc DMA channel
 31
 32  dma-names:
 33    items:
 34      - const: tx
 35      - const: rx
 36      - const: ecc
 37
 38patternProperties:
 39  "^nand@[a-f0-9]$":
 40    type: object
 41    $ref: raw-nand-chip.yaml
 42    properties:
 43      nand-ecc-step-size:
 44        const: 512
 45
 46      nand-ecc-strength:
 47        enum: [1, 4, 8]
 48
 49    unevaluatedProperties: false
 50
 51allOf:
 52  - $ref: nand-controller.yaml#
 53
 54  - if:
 55      properties:
 56        compatible:
 57          contains:
 58            const: st,stm32mp15-fmc2
 59    then:
 60      properties:
 61        reg:
 62          items:
 63            - description: Registers
 64            - description: Chip select 0 data
 65            - description: Chip select 0 command
 66            - description: Chip select 0 address space
 67            - description: Chip select 1 data
 68            - description: Chip select 1 command
 69            - description: Chip select 1 address space
 70
 71        clocks:
 72          maxItems: 1
 73
 74        resets:
 75          maxItems: 1
 76
 77      required:
 78        - clocks
 79
 80  - if:
 81      properties:
 82        compatible:
 83          contains:
 84            const: st,stm32mp1-fmc2-nfc
 85    then:
 86      properties:
 87        reg:
 88          items:
 89            - description: Chip select 0 data
 90            - description: Chip select 0 command
 91            - description: Chip select 0 address space
 92            - description: Chip select 1 data
 93            - description: Chip select 1 command
 94            - description: Chip select 1 address space
 95
 96  - if:
 97      properties:
 98        compatible:
 99          contains:
100            const: st,stm32mp25-fmc2-nfc
101    then:
102      properties:
103        reg:
104          items:
105            - description: Chip select 0 data
106            - description: Chip select 0 command
107            - description: Chip select 0 address space
108            - description: Chip select 1 data
109            - description: Chip select 1 command
110            - description: Chip select 1 address space
111            - description: Chip select 2 data
112            - description: Chip select 2 command
113            - description: Chip select 2 address space
114            - description: Chip select 3 data
115            - description: Chip select 3 command
116            - description: Chip select 3 address space
117
118required:
119  - compatible
120  - reg
121  - interrupts
122
123unevaluatedProperties: false
124
125examples:
126  - |
127    #include <dt-bindings/interrupt-controller/arm-gic.h>
128    #include <dt-bindings/clock/stm32mp1-clks.h>
129    #include <dt-bindings/reset/stm32mp1-resets.h>
130
131    nand-controller@58002000 {
132        compatible = "st,stm32mp15-fmc2";
133        reg = <0x58002000 0x1000>,
134              <0x80000000 0x1000>,
135              <0x88010000 0x1000>,
136              <0x88020000 0x1000>,
137              <0x81000000 0x1000>,
138              <0x89010000 0x1000>,
139              <0x89020000 0x1000>;
140        interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
141        dmas = <&mdma1 20 0x2 0x12000a02 0x0 0x0>,
142               <&mdma1 20 0x2 0x12000a08 0x0 0x0>,
143               <&mdma1 21 0x2 0x12000a0a 0x0 0x0>;
144        dma-names = "tx", "rx", "ecc";
145        clocks = <&rcc FMC_K>;
146        resets = <&rcc FMC_R>;
147        #address-cells = <1>;
148        #size-cells = <0>;
149
150        nand@0 {
151            reg = <0>;
152            nand-on-flash-bbt;
153            #address-cells = <1>;
154            #size-cells = <1>;
155        };
156    };
157
158...