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146 lines
3.3 KiB
146 lines
3.3 KiB
# SPDX-License-Identifier: GPL-2.0 |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/mux/reg-mux.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Generic register bitfield-based multiplexer controller bindings |
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maintainers: |
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- Peter Rosin <[email protected]> |
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description: |+ |
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Define register bitfields to be used to control multiplexers. The parent |
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device tree node must be a device node to provide register r/w access. |
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properties: |
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compatible: |
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enum: |
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- reg-mux # parent device of mux controller is not syscon device |
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- mmio-mux # parent device of mux controller is syscon device |
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reg: true |
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'#mux-control-cells': |
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const: 1 |
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mux-reg-masks: |
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$ref: /schemas/types.yaml#/definitions/uint32-matrix |
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items: |
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items: |
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- description: register offset |
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- description: pre-shifted bitfield mask |
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description: Each entry pair describes a single mux control. |
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idle-states: true |
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required: |
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- compatible |
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- mux-reg-masks |
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- '#mux-control-cells' |
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additionalProperties: false |
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examples: |
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- | |
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/* The parent device of mux controller is not a syscon device. */ |
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#include <dt-bindings/mux/mux.h> |
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mux-controller { |
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compatible = "reg-mux"; |
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#mux-control-cells = <1>; |
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mux-reg-masks = |
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<0x54 0xf8>, /* 0: reg 0x54, bits 7:3 */ |
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<0x54 0x07>; /* 1: reg 0x54, bits 2:0 */ |
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}; |
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mdio-mux-1 { |
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compatible = "mdio-mux-multiplexer"; |
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mux-controls = <&mux1 0>; |
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mdio-parent-bus = <&emdio1>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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mdio@0 { |
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reg = <0x0>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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}; |
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mdio@8 { |
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reg = <0x8>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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}; |
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}; |
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mdio-mux-2 { |
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compatible = "mdio-mux-multiplexer"; |
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mux-controls = <&mux1 1>; |
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mdio-parent-bus = <&emdio2>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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mdio@0 { |
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reg = <0x0>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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}; |
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mdio@1 { |
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reg = <0x1>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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}; |
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}; |
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- | |
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/* The parent device of mux controller is syscon device. */ |
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#include <dt-bindings/mux/mux.h> |
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syscon@1000 { |
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reg = <0x1000 0x100>; |
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mux2: mux-controller { |
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compatible = "mmio-mux"; |
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#mux-control-cells = <1>; |
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mux-reg-masks = |
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<0x3 0x30>, /* 0: reg 0x3, bits 5:4 */ |
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<0x3 0x40>; /* 1: reg 0x3, bit 6 */ |
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idle-states = <MUX_IDLE_AS_IS>, <0>; |
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}; |
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}; |
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video-mux { |
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compatible = "video-mux"; |
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mux-controls = <&mux2 0>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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ports { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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/* inputs 0..3 */ |
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port@0 { |
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reg = <0>; |
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}; |
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port@1 { |
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reg = <1>; |
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}; |
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port@2 { |
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reg = <2>; |
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}; |
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port@3 { |
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reg = <3>; |
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}; |
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/* output */ |
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port@4 { |
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reg = <4>; |
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}; |
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}; |
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}; |
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...
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