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-rw-r--r-- | Documentation/devicetree/bindings/mtd/ingenic,nand.yaml | 135 |
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diff --git a/Documentation/devicetree/bindings/mtd/ingenic,nand.yaml b/Documentation/devicetree/bindings/mtd/ingenic,nand.yaml new file mode 100644 index 000000000..8c272c842 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/ingenic,nand.yaml @@ -0,0 +1,135 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mtd/ingenic,nand.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ingenic SoCs NAND controller devicetree bindings + +maintainers: + - Paul Cercueil <paul@crapouillou.net> + +allOf: + - $ref: nand-controller.yaml# + - $ref: /schemas/memory-controllers/ingenic,nemc-peripherals.yaml# + +properties: + compatible: + enum: + - ingenic,jz4740-nand + - ingenic,jz4725b-nand + - ingenic,jz4780-nand + + reg: + items: + - description: Bank number, offset and size of first attached NAND chip + - description: Bank number, offset and size of second attached NAND chip + - description: Bank number, offset and size of third attached NAND chip + - description: Bank number, offset and size of fourth attached NAND chip + minItems: 1 + + ecc-engine: true + + partitions: + type: object + description: + Node containing description of fixed partitions. + See Documentation/devicetree/bindings/mtd/partition.txt + +patternProperties: + "^nand@[a-f0-9]$": + type: object + properties: + rb-gpios: + description: GPIO specifier for the busy pin. + maxItems: 1 + + wp-gpios: + description: GPIO specifier for the write-protect pin. + maxItems: 1 + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/clock/ingenic,jz4780-cgu.h> + memory-controller@13410000 { + compatible = "ingenic,jz4780-nemc"; + reg = <0x13410000 0x10000>; + #address-cells = <2>; + #size-cells = <1>; + ranges = <1 0 0x1b000000 0x1000000>, + <2 0 0x1a000000 0x1000000>, + <3 0 0x19000000 0x1000000>, + <4 0 0x18000000 0x1000000>, + <5 0 0x17000000 0x1000000>, + <6 0 0x16000000 0x1000000>; + + clocks = <&cgu JZ4780_CLK_NEMC>; + + nand-controller@1 { + compatible = "ingenic,jz4780-nand"; + reg = <1 0 0x1000000>; + + #address-cells = <1>; + #size-cells = <0>; + + ecc-engine = <&bch>; + + ingenic,nemc-tAS = <10>; + ingenic,nemc-tAH = <5>; + ingenic,nemc-tBP = <10>; + ingenic,nemc-tAW = <15>; + ingenic,nemc-tSTRV = <100>; + + pinctrl-names = "default"; + pinctrl-0 = <&pins_nemc>; + + nand@1 { + reg = <1>; + + nand-ecc-step-size = <1024>; + nand-ecc-strength = <24>; + nand-ecc-mode = "hw"; + nand-on-flash-bbt; + + pinctrl-names = "default"; + pinctrl-0 = <&pins_nemc_cs1>; + + partitions { + compatible = "fixed-partitions"; + #address-cells = <2>; + #size-cells = <2>; + + partition@0 { + label = "u-boot-spl"; + reg = <0x0 0x0 0x0 0x800000>; + }; + + partition@800000 { + label = "u-boot"; + reg = <0x0 0x800000 0x0 0x200000>; + }; + + partition@a00000 { + label = "u-boot-env"; + reg = <0x0 0xa00000 0x0 0x200000>; + }; + + partition@c00000 { + label = "boot"; + reg = <0x0 0xc00000 0x0 0x4000000>; + }; + + partition@4c00000 { + label = "system"; + reg = <0x0 0x4c00000 0x1 0xfb400000>; + }; + }; + }; + }; + }; |