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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 NAND Controller
maintainers:
- Keguang Zhang <keguang.zhang@gmail.com>
- Binbin Zhou <zhoubinbin@loongson.cn>
description:
The Loongson 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
- loongson,ls2k0500-nand-controller
- loongson,ls2k1000-nand-controller
- items:
- enum:
- loongson,ls1a-nand-controller
- const: loongson,ls1b-nand-controller
reg:
minItems: 2
maxItems: 3
reg-names:
minItems: 2
items:
- const: nand
- const: nand-dma
- const: dma-config
dmas:
maxItems: 1
dma-names:
const: rxtx
required:
- compatible
- reg
- reg-names
- dmas
- dma-names
unevaluatedProperties: false
if:
properties:
compatible:
contains:
enum:
- loongson,ls2k1000-nand-controller
then:
properties:
reg:
minItems: 3
reg-names:
minItems: 3
else:
properties:
reg:
maxItems: 2
reg-names:
maxItems: 2
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";
};
};
- |
nand-controller@1fe26000 {
compatible = "loongson,ls2k1000-nand-controller";
reg = <0x1fe26000 0x24>,
<0x1fe26040 0x4>,
<0x1fe00438 0x8>;
reg-names = "nand", "nand-dma", "dma-config";
dmas = <&apbdma0 0>;
dma-names = "rxtx";
#address-cells = <1>;
#size-cells = <0>;
nand@0 {
reg = <0>;
label = "ls2k1000-nand";
nand-use-soft-ecc-engine;
nand-ecc-algo = "bch";
nand-ecc-strength = <8>;
nand-ecc-step-size = <512>;
};
};
|
