mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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0fc829dbde
Add mux controller support for when the I2C lines are muxed after signals come out of SoC and before they go to any client. Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://lore.kernel.org/r/20250318103622.29979-2-j-choudhary@ti.com Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
97 lines
2.0 KiB
YAML
97 lines
2.0 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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$id: http://devicetree.org/schemas/i2c/ti,omap4-i2c.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: I2C controllers on TI's OMAP and K3 SoCs
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maintainers:
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- Vignesh Raghavendra <vigneshr@ti.com>
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properties:
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compatible:
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oneOf:
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- enum:
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- ti,omap2420-i2c
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- ti,omap2430-i2c
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- ti,omap3-i2c
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- ti,omap4-i2c
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- items:
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- enum:
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- ti,am4372-i2c
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- ti,am64-i2c
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- ti,am654-i2c
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- ti,j721e-i2c
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- const: ti,omap4-i2c
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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maxItems: 1
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clock-names:
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const: fck
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power-domains: true
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ti,hwmods:
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description:
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Must be "i2c<n>", n being the instance number (1-based).
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This property is applicable only on legacy platforms mainly omap2/3
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and ti81xx and should not be used on other platforms.
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$ref: /schemas/types.yaml#/definitions/string
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deprecated: true
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mux-states:
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description:
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mux controller node to route the I2C signals from SoC to clients.
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maxItems: 1
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required:
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- compatible
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- reg
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- interrupts
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allOf:
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- $ref: /schemas/i2c/i2c-controller.yaml#
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- if:
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properties:
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compatible:
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enum:
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- ti,omap2420-i2c
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- ti,omap2430-i2c
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- ti,omap3-i2c
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- ti,omap4-i2c
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then:
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properties:
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ti,hwmods:
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items:
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- pattern: "^i2c([1-9])$"
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else:
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properties:
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ti,hwmods: false
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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main_i2c0: i2c@2000000 {
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compatible = "ti,j721e-i2c", "ti,omap4-i2c";
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reg = <0x2000000 0x100>;
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interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>;
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#address-cells = <1>;
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#size-cells = <0>;
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mux-states = <&i2c_mux 1>;
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};
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