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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/microchip/atmel,at91rm9200-tcb.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Atmel Timer Counter Block
maintainers:
- Alexandre Belloni <alexandre.belloni@bootlin.com>
description: |
The Atmel (now Microchip) SoCs have timers named Timer Counter Block. Each
timer has three channels with two counters each.
properties:
compatible:
oneOf:
- items:
- enum:
- atmel,at91rm9200-tcb
- atmel,at91sam9x5-tcb
- atmel,sama5d2-tcb
- const: simple-mfd
- const: syscon
- items:
- const: microchip,sam9x7-tcb
- const: atmel,sama5d2-tcb
- const: simple-mfd
- const: syscon
reg:
maxItems: 1
interrupts:
description:
List of interrupts. One interrupt per TCB channel if available or one
interrupt for the TC block
minItems: 1
maxItems: 3
clock-names:
description:
List of clock names. Always includes t0_clk and slow clk. Also includes
t1_clk and t2_clk if a clock per channel is available.
minItems: 2
maxItems: 4
clocks:
minItems: 2
maxItems: 4
'#address-cells':
const: 1
'#size-cells':
const: 0
patternProperties:
"^timer@[0-2]$":
description: The timer block channels that are used as timers or counters.
type: object
additionalProperties: false
properties:
compatible:
items:
- enum:
- atmel,tcb-timer
- atmel,tcb-pwm
- microchip,tcb-capture
reg:
description:
List of channels to use for this particular timer. In Microchip TCB capture
mode channels are registered as a counter devices, for the qdec mode TCB0's
channel <0> and <1> are required.
minItems: 1
maxItems: 3
required:
- compatible
- reg
"^pwm@[0-2]$":
description: The timer block channels that are used as PWMs.
$ref: /schemas/pwm/pwm.yaml#
type: object
properties:
compatible:
const: atmel,tcb-pwm
reg:
description:
TCB channel to use for this PWM.
enum: [ 0, 1, 2 ]
"#pwm-cells":
description:
The only third cell flag supported by this binding is
PWM_POLARITY_INVERTED.
const: 3
required:
- compatible
- reg
- "#pwm-cells"
additionalProperties: false
allOf:
- if:
properties:
compatible:
contains:
const: atmel,sama5d2-tcb
then:
properties:
clocks:
minItems: 3
maxItems: 3
clock-names:
items:
- const: t0_clk
- const: gclk
- const: slow_clk
else:
properties:
clocks:
minItems: 2
maxItems: 4
clock-names:
oneOf:
- items:
- const: t0_clk
- const: slow_clk
- items:
- const: t0_clk
- const: t1_clk
- const: t2_clk
- const: slow_clk
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
- '#address-cells'
- '#size-cells'
additionalProperties: false
examples:
- |
/* One interrupt per TC block: */
tcb0: timer@fff7c000 {
compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
#address-cells = <1>;
#size-cells = <0>;
reg = <0xfff7c000 0x100>;
interrupts = <18 4>;
clocks = <&tcb0_clk>, <&clk32k>;
clock-names = "t0_clk", "slow_clk";
timer@0 {
compatible = "atmel,tcb-timer";
reg = <0>, <1>;
};
timer@2 {
compatible = "atmel,tcb-timer";
reg = <2>;
};
};
/* One interrupt per TC channel in a TC block: */
tcb1: timer@fffdc000 {
compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
#address-cells = <1>;
#size-cells = <0>;
reg = <0xfffdc000 0x100>;
interrupts = <26 4>, <27 4>, <28 4>;
clocks = <&tcb1_clk>, <&clk32k>;
clock-names = "t0_clk", "slow_clk";
timer@0 {
compatible = "atmel,tcb-timer";
reg = <0>;
};
timer@1 {
compatible = "atmel,tcb-timer";
reg = <1>;
};
pwm@2 {
compatible = "atmel,tcb-pwm";
reg = <2>;
#pwm-cells = <3>;
};
};
/* TCB0 Capture with QDEC: */
timer@f800c000 {
compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
#address-cells = <1>;
#size-cells = <0>;
reg = <0xfff7c000 0x100>;
interrupts = <18 4>;
clocks = <&tcb0_clk>, <&clk32k>;
clock-names = "t0_clk", "slow_clk";
timer@0 {
compatible = "microchip,tcb-capture";
reg = <0>, <1>;
};
timer@2 {
compatible = "atmel,tcb-timer";
reg = <2>;
};
};
|
