From: Keguang Zhang <keguang.zhang@xxxxxxxxx> Add devicetree binding document for Loongson-1 NAND Controller. Signed-off-by: Keguang Zhang <keguang.zhang@xxxxxxxxx> --- Changes in v8: - Add a description part. - Adjust the compatible because the match data for ls1c-nfc differs from ls1b-nfc. - Mark 'nand-use-soft-ecc-engine' and 'nand-ecc-algo' as mandatory. - Delete the superfluous blank lines. Changes in v7: - rename the file to loongson,ls1b-nfc.yaml Changes in v6: - A newly added patch --- .../devicetree/bindings/mtd/loongson,ls1b-nfc.yaml | 75 ++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/loongson,ls1b-nfc.yaml b/Documentation/devicetree/bindings/mtd/loongson,ls1b-nfc.yaml new file mode 100644 index 000000000000..7ce335324a29 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/loongson,ls1b-nfc.yaml @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mtd/loongson,ls1b-nfc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson-1 NAND Controller + +maintainers: + - Keguang Zhang <keguang.zhang@xxxxxxxxx> + +description: | + The Loongson-1 NAND controller abstracts all supported operations, + meaning it does not support low-level access to raw NAND flash chips. + Moreover, the controller is paired with the DMA engine to perform + READ and PROGRAM functions. + +allOf: + - $ref: nand-controller.yaml + +properties: + compatible: + oneOf: + - enum: + - loongson,ls1b-nfc + - loongson,ls1c-nfc + - items: + - enum: + - loongson,ls1a-nfc + - const: loongson,ls1b-nfc + + reg: + maxItems: 1 + + dmas: + maxItems: 1 + + dma-names: + const: rxtx + +patternProperties: + "^nand@[0-3]$": + type: object + $ref: raw-nand-chip.yaml + + required: + - nand-use-soft-ecc-engine + - nand-ecc-algo + + unevaluatedProperties: false + +required: + - compatible + - reg + - dmas + - dma-names + +unevaluatedProperties: false + +examples: + - | + nand-controller@1fe78000 { + compatible = "loongson,ls1b-nfc"; + reg = <0x1fe78000 0x40>; + #address-cells = <1>; + #size-cells = <0>; + dmas = <&dma 0>; + dma-names = "rxtx"; + + nand@0 { + reg = <0>; + nand-use-soft-ecc-engine; + nand-ecc-algo = "hamming"; + }; + }; -- 2.43.0
