120 lines
2.8 KiB
YAML
120 lines
2.8 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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$id: http://devicetree.org/schemas/i2c/i2c-mt65xx.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: MediaTek I2C controller
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description:
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This driver interfaces with the native I2C controller present in
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various MediaTek SoCs.
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allOf:
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- $ref: /schemas/i2c/i2c-controller.yaml#
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maintainers:
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- Qii Wang <qii.wang@mediatek.com>
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properties:
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compatible:
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oneOf:
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- const: mediatek,mt2712-i2c
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- const: mediatek,mt6577-i2c
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- const: mediatek,mt6589-i2c
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- const: mediatek,mt7622-i2c
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- const: mediatek,mt8168-i2c
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- const: mediatek,mt8173-i2c
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- const: mediatek,mt8183-i2c
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- const: mediatek,mt8186-i2c
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- const: mediatek,mt8188-i2c
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- const: mediatek,mt8192-i2c
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- items:
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- enum:
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- mediatek,mt7629-i2c
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- mediatek,mt8516-i2c
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- const: mediatek,mt2712-i2c
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- items:
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- enum:
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- mediatek,mt2701-i2c
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- mediatek,mt6797-i2c
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- mediatek,mt7623-i2c
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- const: mediatek,mt6577-i2c
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- items:
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- enum:
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- mediatek,mt8195-i2c
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- const: mediatek,mt8192-i2c
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reg:
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items:
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- description: Physical base address
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- description: DMA base address
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interrupts:
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maxItems: 1
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clocks:
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minItems: 2
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items:
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- description: Main clock for I2C bus
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- description: Clock for I2C via DMA
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- description: Bus arbitrator clock
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- description: Clock for I2C from PMIC
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clock-names:
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minItems: 2
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items:
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- const: main
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- const: dma
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- const: arb
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- const: pmic
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clock-div:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Frequency divider of clock source in I2C module
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clock-frequency:
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default: 100000
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description:
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SCL frequency to use (in Hz). If omitted, 100kHz is used.
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mediatek,have-pmic:
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description: Platform controls I2C from PMIC side
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type: boolean
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mediatek,use-push-pull:
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description: Use push-pull mode I/O config
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type: boolean
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vbus-supply:
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description: Phandle to the regulator providing power to SCL/SDA
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- clock-div
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- interrupts
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c0: i2c@1100d000 {
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compatible = "mediatek,mt6577-i2c";
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reg = <0x1100d000 0x70>, <0x11000300 0x80>;
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interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
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clocks = <&i2c0_ck>, <&ap_dma_ck>;
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clock-names = "main", "dma";
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clock-div = <16>;
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clock-frequency = <400000>;
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mediatek,have-pmic;
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#address-cells = <1>;
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#size-cells = <0>;
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};
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