51 lines
1.3 KiB
YAML
51 lines
1.3 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/timer/brcm,bcm2835-system-timer.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: BCM2835 System Timer
|
|
|
|
maintainers:
|
|
- Stefan Wahren <wahrenst@gmx.net>
|
|
- Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
|
|
|
|
description:
|
|
The System Timer peripheral provides four 32-bit timer channels and a
|
|
single 64-bit free running counter. Each channel has an output compare
|
|
register, which is compared against the 32 least significant bits of the
|
|
free running counter values, and generates an interrupt.
|
|
|
|
properties:
|
|
compatible:
|
|
const: brcm,bcm2835-system-timer
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
interrupts:
|
|
items:
|
|
- description: System Timer Compare 0 match (used by VideoCore GPU)
|
|
- description: System Timer Compare 1 match (usable for ARM core)
|
|
- description: System Timer Compare 2 match (used by VideoCore GPU)
|
|
- description: System Timer Compare 3 match (usable for ARM core)
|
|
|
|
clock-frequency: true
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- interrupts
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
timer@7e003000 {
|
|
compatible = "brcm,bcm2835-system-timer";
|
|
reg = <0x7e003000 0x1000>;
|
|
interrupts = <1 0>, <1 1>, <1 2>, <1 3>;
|
|
clock-frequency = <1000000>;
|
|
};
|
|
...
|