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dt-bindings: timer: renesas: mtu2: Convert to json-schema
Convert the Renesas Multi-Function Timer Pulse Unit 2 (MTU2) Device Tree binding documentation to json-schema. Add missing properties. Update the example to match reality. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org>
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* Renesas Multi-Function Timer Pulse Unit 2 (MTU2)
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The MTU2 is a multi-purpose, multi-channel timer/counter with configurable
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clock inputs and programmable compare match.
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Channels share hardware resources but their counter and compare match value
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are independent. The MTU2 hardware supports five channels indexed from 0 to 4.
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Required Properties:
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- compatible: must be one or more of the following:
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- "renesas,mtu2-r7s72100" for the r7s72100 MTU2
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- "renesas,mtu2" for any MTU2
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This is a fallback for the above renesas,mtu2-* entries
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- reg: base address and length of the registers block for the timer module.
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- interrupts: interrupt specifiers for the timer, one for each entry in
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interrupt-names.
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- interrupt-names: must contain one entry named "tgi?a" for each enabled
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channel, where "?" is the channel index expressed as one digit from "0" to
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"4".
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- clocks: a list of phandle + clock-specifier pairs, one for each entry
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in clock-names.
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- clock-names: must contain "fck" for the functional clock.
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Example: R7S72100 (RZ/A1H) MTU2 node
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mtu2: timer@fcff0000 {
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compatible = "renesas,mtu2-r7s72100", "renesas,mtu2";
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reg = <0xfcff0000 0x400>;
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interrupts = <0 139 IRQ_TYPE_LEVEL_HIGH>,
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<0 146 IRQ_TYPE_LEVEL_HIGH>,
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<0 150 IRQ_TYPE_LEVEL_HIGH>,
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<0 154 IRQ_TYPE_LEVEL_HIGH>,
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<0 159 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "tgi0a", "tgi1a", "tgi2a", "tgi3a", "tgi4a";
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clocks = <&mstp3_clks R7S72100_CLK_MTU2>;
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clock-names = "fck";
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};
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76
Documentation/devicetree/bindings/timer/renesas,mtu2.yaml
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76
Documentation/devicetree/bindings/timer/renesas,mtu2.yaml
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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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$id: http://devicetree.org/schemas/timer/renesas,mtu2.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Renesas Multi-Function Timer Pulse Unit 2 (MTU2)
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maintainers:
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- Geert Uytterhoeven <geert+renesas@glider.be>
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- Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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description:
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The MTU2 is a multi-purpose, multi-channel timer/counter with configurable clock inputs
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and programmable compare match.
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Channels share hardware resources but their counter and compare match value are
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independent. The MTU2 hardware supports five channels indexed from 0 to 4.
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properties:
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compatible:
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items:
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- enum:
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- renesas,mtu2-r7s72100 # RZ/A1H
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- const: renesas,mtu2
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reg:
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maxItems: 1
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interrupts:
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minItems: 1
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maxItems: 5
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description: One entry for each enabled channel.
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interrupt-names:
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minItems: 1
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items:
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- const: tgi0a
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- const: tgi1a
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- const: tgi2a
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- const: tgi3a
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- const: tgi4a
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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:
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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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- interrupt-names
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- clocks
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- clock-names
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- power-domains
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/r7s72100-clock.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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mtu2: timer@fcff0000 {
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compatible = "renesas,mtu2-r7s72100", "renesas,mtu2";
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reg = <0xfcff0000 0x400>;
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interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "tgi0a";
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clocks = <&mstp3_clks R7S72100_CLK_MTU2>;
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clock-names = "fck";
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power-domains = <&cpg_clocks>;
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};
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