| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/mtd/amlogic,meson-nand.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs |
| |
| allOf: |
| - $ref: nand-controller.yaml |
| |
| maintainers: |
| - liang.yang@amlogic.com |
| |
| properties: |
| compatible: |
| enum: |
| - amlogic,meson-gxl-nfc |
| - amlogic,meson-axg-nfc |
| |
| reg: |
| maxItems: 2 |
| |
| reg-names: |
| items: |
| - const: nfc |
| - const: emmc |
| |
| interrupts: |
| maxItems: 1 |
| |
| clocks: |
| minItems: 2 |
| |
| clock-names: |
| items: |
| - const: core |
| - const: device |
| |
| patternProperties: |
| "^nand@[0-7]$": |
| type: object |
| $ref: raw-nand-chip.yaml |
| properties: |
| reg: |
| minimum: 0 |
| maximum: 1 |
| |
| nand-ecc-mode: |
| const: hw |
| |
| nand-ecc-step-size: |
| enum: [512, 1024] |
| |
| nand-ecc-strength: |
| enum: [8, 16, 24, 30, 40, 50, 60] |
| description: | |
| The ECC configurations that can be supported are as follows. |
| meson-gxl-nfc 8, 16, 24, 30, 40, 50, 60 |
| meson-axg-nfc 8 |
| |
| nand-rb: |
| maxItems: 1 |
| items: |
| maximum: 0 |
| |
| amlogic,boot-pages: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: |
| Number of pages starting from offset 0, where a special ECC |
| configuration must be used because it is accessed by the ROM |
| code. This ECC configuration uses 384 bytes data blocks. |
| Also scrambling mode is enabled for such pages. |
| |
| amlogic,boot-page-step: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: |
| Interval between pages, accessed by the ROM code. For example |
| we have 8 pages [0, 7]. Pages 0,2,4,6 are accessed by the |
| ROM code, so this field will be 2 (e.g. every 2nd page). Rest |
| of pages - 1,3,5,7 are read/written without this mode. |
| |
| unevaluatedProperties: false |
| |
| dependencies: |
| nand-ecc-strength: [nand-ecc-step-size] |
| nand-ecc-step-size: [nand-ecc-strength] |
| amlogic,boot-pages: [nand-is-boot-medium, "amlogic,boot-page-step"] |
| amlogic,boot-page-step: [nand-is-boot-medium, "amlogic,boot-pages"] |
| |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - clocks |
| - clock-names |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/clock/axg-clkc.h> |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| nand-controller@ffe07800 { |
| compatible = "amlogic,meson-axg-nfc"; |
| reg = <0xffe07800 0x100>, <0xffe07000 0x800>; |
| reg-names = "nfc", "emmc"; |
| interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>; |
| clocks = <&clkc CLKID_SD_EMMC_C>, <&clkc CLKID_FCLK_DIV2>; |
| clock-names = "core", "device"; |
| |
| pinctrl-0 = <&nand_pins>; |
| pinctrl-names = "default"; |
| |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| nand@0 { |
| reg = <0>; |
| nand-rb = <0>; |
| }; |
| }; |
| |
| ... |
