126 lines
2.9 KiB
YAML
126 lines
2.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/memory-controllers/ingenic,nemc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Ingenic SoCs NAND / External Memory Controller (NEMC) devicetree bindings
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maintainers:
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- Paul Cercueil <paul@crapouillou.net>
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properties:
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$nodename:
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pattern: "^memory-controller@[0-9a-f]+$"
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compatible:
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oneOf:
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- enum:
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- ingenic,jz4740-nemc
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- ingenic,jz4780-nemc
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- items:
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- const: ingenic,jz4725b-nemc
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- const: ingenic,jz4740-nemc
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"#address-cells":
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const: 2
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"#size-cells":
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const: 1
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ranges: true
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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patternProperties:
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".*@[0-9]+$":
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type: object
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properties:
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reg:
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minItems: 1
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maxItems: 255
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ingenic,nemc-bus-width:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [8, 16]
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description: Specifies the bus width in bits.
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ingenic,nemc-tAS:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Address setup time in nanoseconds.
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ingenic,nemc-tAH:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Address hold time in nanoseconds.
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ingenic,nemc-tBP:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Burst pitch time in nanoseconds.
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ingenic,nemc-tAW:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Address wait time in nanoseconds.
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ingenic,nemc-tSTRV:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Static memory recovery time in nanoseconds.
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required:
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- reg
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required:
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- compatible
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- "#address-cells"
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- "#size-cells"
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- ranges
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- reg
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- clocks
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/jz4780-cgu.h>
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#include <dt-bindings/gpio/gpio.h>
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nemc: memory-controller@13410000 {
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compatible = "ingenic,jz4780-nemc";
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reg = <0x13410000 0x10000>;
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#address-cells = <2>;
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#size-cells = <1>;
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ranges = <1 0 0x1b000000 0x1000000>,
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<2 0 0x1a000000 0x1000000>,
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<3 0 0x19000000 0x1000000>,
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<4 0 0x18000000 0x1000000>,
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<5 0 0x17000000 0x1000000>,
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<6 0 0x16000000 0x1000000>;
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clocks = <&cgu JZ4780_CLK_NEMC>;
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ethernet@6 {
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compatible = "davicom,dm9000";
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davicom,no-eeprom;
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pinctrl-names = "default";
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pinctrl-0 = <&pins_nemc_cs6>;
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reg = <6 0 1>, /* addr */
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<6 2 1>; /* data */
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ingenic,nemc-tAS = <15>;
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ingenic,nemc-tAH = <10>;
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ingenic,nemc-tBP = <20>;
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ingenic,nemc-tAW = <50>;
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ingenic,nemc-tSTRV = <100>;
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reset-gpios = <&gpf 12 GPIO_ACTIVE_HIGH>;
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vcc-supply = <ð0_power>;
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interrupt-parent = <&gpe>;
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interrupts = <19 4>;
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};
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};
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