# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id:
http://devicetree.org/schemas/mtd/denali,nand.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Denali NAND controller
maintainers:
- Masahiro Yamada <yamada.masahiro@socionext.com>
properties:
compatible:
enum:
- altr,socfpga-denali-nand
- socionext,uniphier-denali-nand-v5a
- socionext,uniphier-denali-nand-v5b
reg-names:
description: |
There are two register regions:
nand_data: host data/command interface
denali_reg: register interface
items:
- const: nand_data
- const: denali_reg
reg:
minItems: 2
maxItems: 2
interrupts:
maxItems: 1
clock-names:
description: |
There are three clocks:
nand: controller core clock
nand_x: bus interface clock
ecc: ECC circuit clock
items:
- const: nand
- const: nand_x
- const: ecc
clocks:
minItems: 3
maxItems: 3
reset-names:
description: |
There are two optional resets:
nand: controller core reset
reg: register reset
oneOf:
- items:
- const: nand
- const: reg
- const: nand
- const: reg
resets:
minItems: 1
maxItems: 2
patternProperties:
"^nand@[a-f0-9]$":
type: object
$ref: raw-nand-chip.yaml
unevaluatedProperties: false
allOf:
- $ref: nand-controller.yaml
- if:
properties:
compatible:
contains:
const: altr,socfpga-denali-nand
then:
patternProperties:
"^nand@[a-f0-9]$":
properties:
nand-ecc-strength:
enum:
- 8
- 15
nand-ecc-step-size:
enum:
- 512
- if:
properties:
compatible:
contains:
const: socionext,uniphier-denali-nand-v5a
then:
patternProperties:
"^nand@[a-f0-9]$":
properties:
nand-ecc-strength:
enum:
- 8
- 16
- 24
nand-ecc-step-size:
enum:
- 1024
- if:
properties:
compatible:
contains:
const: socionext,uniphier-denali-nand-v5b
then:
patternProperties:
"^nand@[a-f0-9]$":
properties:
nand-ecc-strength:
enum:
- 8
- 16
nand-ecc-step-size:
enum:
- 1024
required:
- compatible
- reg
- interrupts
- clock-names
- clocks
unevaluatedProperties: false
examples:
- |
nand-controller@ff900000 {
compatible = "altr,socfpga-denali-nand";
reg-names = "nand_data", "denali_reg";
reg = <0xff900000 0x20>, <0xffb80000 0x1000>;
interrupts = <0 144 4>;
clock-names = "nand", "nand_x", "ecc";
clocks = <&nand_clk>, <&nand_x_clk>, <&nand_ecc_clk>;
reset-names = "nand", "reg";
resets = <&nand_rst>, <&nand_reg_rst>;
#address-cells = <1>;
#size-cells = <0>;
nand@0 {
reg = <0>;
};
};
