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dt-bindings: i2c: convert i2c-mt65xx to json-schema
Convert I2C binding for MediaTek SoCs to Devicetree schema. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220407094753.13282-1-angelogioacchino.delregno@collabora.com
This commit is contained in:
AngeloGioacchino Del Regno
Rob Herring
parent
2b18b93e19
commit
fe88f5f70b
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@ -1,53 +0,0 @@
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* MediaTek's I2C controller
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The MediaTek's I2C controller is used to interface with I2C devices.
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Required properties:
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- compatible: value should be either of the following.
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"mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for MediaTek MT2701
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"mediatek,mt2712-i2c": for MediaTek MT2712
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"mediatek,mt6577-i2c": for MediaTek MT6577
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"mediatek,mt6589-i2c": for MediaTek MT6589
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"mediatek,mt6797-i2c", "mediatek,mt6577-i2c": for MediaTek MT6797
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"mediatek,mt7622-i2c": for MediaTek MT7622
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"mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623
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"mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629
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"mediatek,mt8168-i2c": for MediaTek MT8168
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"mediatek,mt8173-i2c": for MediaTek MT8173
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"mediatek,mt8183-i2c": for MediaTek MT8183
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"mediatek,mt8186-i2c": for MediaTek MT8186
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"mediatek,mt8192-i2c": for MediaTek MT8192
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"mediatek,mt8195-i2c", "mediatek,mt8192-i2c": for MediaTek MT8195
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"mediatek,mt8516-i2c", "mediatek,mt2712-i2c": for MediaTek MT8516
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- reg: physical base address of the controller and dma base, length of memory
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mapped region.
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- interrupts: interrupt number to the cpu.
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- clock-div: the fixed value for frequency divider of clock source in i2c
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module. Each IC may be different.
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- clocks: clock name from clock manager
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- clock-names: Must include "main" and "dma", "arb" is for multi-master that
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one bus has more than two i2c controllers, if enable have-pmic need include
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"pmic" extra.
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Optional properties:
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- clock-frequency: Frequency in Hz of the bus when transfer, the default value
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is 100000.
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- mediatek,have-pmic: platform can control i2c form special pmic side.
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Only mt6589 and mt8135 support this feature.
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- mediatek,use-push-pull: IO config use push-pull mode.
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- vbus-supply: phandle to the regulator that provides power to SCL/SDA.
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Example:
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i2c0: i2c@1100d000 {
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compatible = "mediatek,mt6577-i2c";
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reg = <0x1100d000 0x70>,
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<0x11000300 0x80>;
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interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
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clock-frequency = <400000>;
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mediatek,have-pmic;
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clock-div = <16>;
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clocks = <&i2c0_ck>, <&ap_dma_ck>;
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clock-names = "main", "dma";
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};
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118
Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
Normal file
118
Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
Normal file
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@ -0,0 +1,118 @@
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# 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,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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@ -12356,7 +12356,7 @@ MEDIATEK I2C CONTROLLER DRIVER
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M: Qii Wang <qii.wang@mediatek.com>
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L: linux-i2c@vger.kernel.org
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S: Maintained
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F: Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
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F: Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
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F: drivers/i2c/busses/i2c-mt65xx.c
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MEDIATEK IOMMU DRIVER
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