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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:
- enum:
- sifive,fu540-c000-clint
- canaan,k210-clint
- const: sifive,clint0
description:
Should be "<vendor>,<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, "canaan,k210-clint" for the SiFive
CLINT v0 as integrated onto the Canaan Kendryte K210 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>;
};
...
|
