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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/timer/sifive,clint.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: SiFive Core Local Interruptor
maintainers:
- Palmer Dabbelt <palmer@dabbelt.com>
- Anup Patel <anup.patel@wdc.com>
description:
SiFive (and other RISC-V) SOCs include an implementation of the SiFive
Core Local Interruptor (CLINT) for M-mode timer and M-mode inter-processor
interrupts. It directly connects to the timer and inter-processor interrupt
lines of various HARTs (or CPUs) so RISC-V per-HART (or per-CPU) local
interrupt controller is the parent interrupt controller for CLINT device.
The clock frequency of CLINT is specified via "timebase-frequency" DT
property of "/cpus" DT node. The "timebase-frequency" DT property is
described in Documentation/devicetree/bindings/riscv/cpus.yaml
properties:
compatible:
items:
- const: sifive,fu540-c000-clint
- const: sifive,clint0
description:
Should be "sifive,<chip>-clint" and "sifive,clint<version>".
Supported compatible strings are -
"sifive,fu540-c000-clint" for the SiFive CLINT v0 as integrated
onto the SiFive FU540 chip, and "sifive,clint0" for the SiFive
CLINT v0 IP block with no chip integration tweaks.
Please refer to sifive-blocks-ip-versioning.txt for details
reg:
maxItems: 1
interrupts-extended:
minItems: 1
additionalProperties: false
required:
- compatible
- reg
- interrupts-extended
examples:
- |
timer@2000000 {
compatible = "sifive,fu540-c000-clint", "sifive,clint0";
interrupts-extended = <&cpu1intc 3 &cpu1intc 7
&cpu2intc 3 &cpu2intc 7
&cpu3intc 3 &cpu3intc 7
&cpu4intc 3 &cpu4intc 7>;
reg = <0x2000000 0x10000>;
};
...
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