dt-bindings: timer: renesas: tmu: Convert to json-schema
Convert the Renesas R-Mobile/R-Car Timer Unit (TMU) Device Tree binding documentation to json-schema. Document missing properties. Update the example to match reality. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/20201110162014.3290109-3-geert+renesas@glider.bezero-sugar-mainline-defconfig
Geert Uytterhoeven
Daniel Lezcano
parent
db08e6c0e2
commit
b7c0fed5cc
|
|
@ -1,50 +0,0 @@
|
|||
* Renesas R-Mobile/R-Car Timer Unit (TMU)
|
||||
|
||||
The TMU is a 32-bit timer/counter with configurable clock inputs and
|
||||
programmable compare match.
|
||||
|
||||
Channels share hardware resources but their counter and compare match value
|
||||
are independent. The TMU hardware supports up to three channels.
|
||||
|
||||
Required Properties:
|
||||
|
||||
- compatible: must contain one or more of the following:
|
||||
- "renesas,tmu-r8a7740" for the r8a7740 TMU
|
||||
- "renesas,tmu-r8a774a1" for the r8a774A1 TMU
|
||||
- "renesas,tmu-r8a774b1" for the r8a774B1 TMU
|
||||
- "renesas,tmu-r8a774c0" for the r8a774C0 TMU
|
||||
- "renesas,tmu-r8a774e1" for the r8a774E1 TMU
|
||||
- "renesas,tmu-r8a7778" for the r8a7778 TMU
|
||||
- "renesas,tmu-r8a7779" for the r8a7779 TMU
|
||||
- "renesas,tmu-r8a77970" for the r8a77970 TMU
|
||||
- "renesas,tmu-r8a77980" for the r8a77980 TMU
|
||||
- "renesas,tmu" for any TMU.
|
||||
This is a fallback for the above renesas,tmu-* entries
|
||||
|
||||
- reg: base address and length of the registers block for the timer module.
|
||||
|
||||
- interrupts: interrupt-specifier for the timer, one per channel.
|
||||
|
||||
- clocks: a list of phandle + clock-specifier pairs, one for each entry
|
||||
in clock-names.
|
||||
- clock-names: must contain "fck" for the functional clock.
|
||||
|
||||
Optional Properties:
|
||||
|
||||
- #renesas,channels: number of channels implemented by the timer, must be 2
|
||||
or 3 (if not specified the value defaults to 3).
|
||||
|
||||
|
||||
Example: R8A7779 (R-Car H1) TMU0 node
|
||||
|
||||
tmu0: timer@ffd80000 {
|
||||
compatible = "renesas,tmu-r8a7779", "renesas,tmu";
|
||||
reg = <0xffd80000 0x30>;
|
||||
interrupts = <0 32 IRQ_TYPE_LEVEL_HIGH>,
|
||||
<0 33 IRQ_TYPE_LEVEL_HIGH>,
|
||||
<0 34 IRQ_TYPE_LEVEL_HIGH>;
|
||||
clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
|
||||
clock-names = "fck";
|
||||
|
||||
#renesas,channels = <3>;
|
||||
};
|
||||
|
|
@ -0,0 +1,99 @@
|
|||
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/timer/renesas,tmu.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: Renesas R-Mobile/R-Car Timer Unit (TMU)
|
||||
|
||||
maintainers:
|
||||
- Geert Uytterhoeven <geert+renesas@glider.be>
|
||||
- Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
|
||||
|
||||
description:
|
||||
The TMU is a 32-bit timer/counter with configurable clock inputs and
|
||||
programmable compare match.
|
||||
|
||||
Channels share hardware resources but their counter and compare match value
|
||||
are independent. The TMU hardware supports up to three channels.
|
||||
|
||||
properties:
|
||||
compatible:
|
||||
items:
|
||||
- enum:
|
||||
- renesas,tmu-r8a7740 # R-Mobile A1
|
||||
- renesas,tmu-r8a774a1 # RZ/G2M
|
||||
- renesas,tmu-r8a774b1 # RZ/G2N
|
||||
- renesas,tmu-r8a774c0 # RZ/G2E
|
||||
- renesas,tmu-r8a774e1 # RZ/G2H
|
||||
- renesas,tmu-r8a7778 # R-Car M1A
|
||||
- renesas,tmu-r8a7779 # R-Car H1
|
||||
- renesas,tmu-r8a77970 # R-Car V3M
|
||||
- renesas,tmu-r8a77980 # R-Car V3H
|
||||
- const: renesas,tmu
|
||||
|
||||
reg:
|
||||
maxItems: 1
|
||||
|
||||
interrupts:
|
||||
minItems: 2
|
||||
maxItems: 3
|
||||
|
||||
clocks:
|
||||
maxItems: 1
|
||||
|
||||
clock-names:
|
||||
const: fck
|
||||
|
||||
power-domains:
|
||||
maxItems: 1
|
||||
|
||||
resets:
|
||||
maxItems: 1
|
||||
|
||||
'#renesas,channels':
|
||||
description:
|
||||
Number of channels implemented by the timer.
|
||||
$ref: /schemas/types.yaml#/definitions/uint32
|
||||
enum: [ 2, 3 ]
|
||||
default: 3
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- reg
|
||||
- interrupts
|
||||
- clocks
|
||||
- clock-names
|
||||
- power-domains
|
||||
|
||||
if:
|
||||
not:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
enum:
|
||||
- renesas,tmu-r8a7740
|
||||
- renesas,tmu-r8a7778
|
||||
- renesas,tmu-r8a7779
|
||||
then:
|
||||
required:
|
||||
- resets
|
||||
|
||||
additionalProperties: false
|
||||
|
||||
examples:
|
||||
- |
|
||||
#include <dt-bindings/clock/r8a7779-clock.h>
|
||||
#include <dt-bindings/interrupt-controller/arm-gic.h>
|
||||
#include <dt-bindings/power/r8a7779-sysc.h>
|
||||
tmu0: timer@ffd80000 {
|
||||
compatible = "renesas,tmu-r8a7779", "renesas,tmu";
|
||||
reg = <0xffd80000 0x30>;
|
||||
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
|
||||
<GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
|
||||
<GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
|
||||
clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
|
||||
clock-names = "fck";
|
||||
power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
|
||||
#renesas,channels = <3>;
|
||||
};
|
||||
Loading…
Reference in New Issue