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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mtd/loongson,ls1b-nand-controller.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Loongson-1 NAND Controller
maintainers:
- Keguang Zhang <keguang.zhang@gmail.com>
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-nand-controller
- loongson,ls1c-nand-controller
- items:
- enum:
- loongson,ls1a-nand-controller
- const: loongson,ls1b-nand-controller
reg:
maxItems: 2
reg-names:
items:
- const: nand
- const: nand-dma
dmas:
maxItems: 1
dma-names:
const: rxtx
required:
- compatible
- reg
- reg-names
- dmas
- dma-names
unevaluatedProperties: false
examples:
- |
nand-controller@1fe78000 {
compatible = "loongson,ls1b-nand-controller";
reg = <0x1fe78000 0x24>, <0x1fe78040 0x4>;
reg-names = "nand", "nand-dma";
dmas = <&dma 0>;
dma-names = "rxtx";
#address-cells = <1>;
#size-cells = <0>;
nand@0 {
reg = <0>;
label = "ls1x-nand";
nand-use-soft-ecc-engine;
nand-ecc-algo = "hamming";
};
};
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