blob: 24f9e19820282a5aac9a4521e9afb4b7b036abcb [file] [log] [blame]
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/memory-controllers/ingenic,nemc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Ingenic SoCs NAND / External Memory Controller (NEMC) devicetree bindings
maintainers:
- Paul Cercueil <paul@crapouillou.net>
properties:
$nodename:
pattern: "^memory-controller@[0-9a-f]+$"
compatible:
oneOf:
- enum:
- ingenic,jz4740-nemc
- ingenic,jz4780-nemc
- items:
- const: ingenic,jz4725b-nemc
- const: ingenic,jz4740-nemc
"#address-cells":
const: 2
"#size-cells":
const: 1
ranges: true
reg:
maxItems: 1
clocks:
maxItems: 1
patternProperties:
".*@[0-9]+$":
type: object
properties:
reg:
minItems: 1
maxItems: 255
ingenic,nemc-bus-width:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [8, 16]
description: Specifies the bus width in bits.
ingenic,nemc-tAS:
$ref: /schemas/types.yaml#/definitions/uint32
description: Address setup time in nanoseconds.
ingenic,nemc-tAH:
$ref: /schemas/types.yaml#/definitions/uint32
description: Address hold time in nanoseconds.
ingenic,nemc-tBP:
$ref: /schemas/types.yaml#/definitions/uint32
description: Burst pitch time in nanoseconds.
ingenic,nemc-tAW:
$ref: /schemas/types.yaml#/definitions/uint32
description: Address wait time in nanoseconds.
ingenic,nemc-tSTRV:
$ref: /schemas/types.yaml#/definitions/uint32
description: Static memory recovery time in nanoseconds.
required:
- reg
required:
- compatible
- "#address-cells"
- "#size-cells"
- ranges
- reg
- clocks
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/ingenic,jz4780-cgu.h>
#include <dt-bindings/gpio/gpio.h>
nemc: memory-controller@13410000 {
compatible = "ingenic,jz4780-nemc";
reg = <0x13410000 0x10000>;
#address-cells = <2>;
#size-cells = <1>;
ranges = <1 0 0x1b000000 0x1000000>,
<2 0 0x1a000000 0x1000000>,
<3 0 0x19000000 0x1000000>,
<4 0 0x18000000 0x1000000>,
<5 0 0x17000000 0x1000000>,
<6 0 0x16000000 0x1000000>;
clocks = <&cgu JZ4780_CLK_NEMC>;
ethernet@6 {
compatible = "davicom,dm9000";
davicom,no-eeprom;
pinctrl-names = "default";
pinctrl-0 = <&pins_nemc_cs6>;
reg = <6 0 1>, /* addr */
<6 2 1>; /* data */
ingenic,nemc-tAS = <15>;
ingenic,nemc-tAH = <10>;
ingenic,nemc-tBP = <20>;
ingenic,nemc-tAW = <50>;
ingenic,nemc-tSTRV = <100>;
reset-gpios = <&gpf 12 GPIO_ACTIVE_HIGH>;
vcc-supply = <&eth0_power>;
interrupt-parent = <&gpe>;
interrupts = <19 4>;
};
};