1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/timer/sifive,clint.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: SiFive Core Local Interruptor 8 9maintainers: 10 - Palmer Dabbelt <palmer@dabbelt.com> 11 - Anup Patel <anup.patel@wdc.com> 12 13description: 14 SiFive (and other RISC-V) SOCs include an implementation of the SiFive 15 Core Local Interruptor (CLINT) for M-mode timer and M-mode inter-processor 16 interrupts. It directly connects to the timer and inter-processor interrupt 17 lines of various HARTs (or CPUs) so RISC-V per-HART (or per-CPU) local 18 interrupt controller is the parent interrupt controller for CLINT device. 19 The clock frequency of CLINT is specified via "timebase-frequency" DT 20 property of "/cpus" DT node. The "timebase-frequency" DT property is 21 described in Documentation/devicetree/bindings/riscv/cpus.yaml 22 23 T-Head C906/C910 CPU cores include an implementation of CLINT too, however 24 their implementation lacks a memory-mapped MTIME register, thus not 25 compatible with SiFive ones. 26 27properties: 28 compatible: 29 oneOf: 30 - items: 31 - enum: 32 - canaan,k210-clint # Canaan Kendryte K210 33 - sifive,fu540-c000-clint # SiFive FU540 34 - starfive,jh7100-clint # StarFive JH7100 35 - starfive,jh7110-clint # StarFive JH7110 36 - const: sifive,clint0 # SiFive CLINT v0 IP block 37 - items: 38 - enum: 39 - allwinner,sun20i-d1-clint 40 - thead,th1520-clint 41 - const: thead,c900-clint 42 - items: 43 - const: sifive,clint0 44 - const: riscv,clint0 45 deprecated: true 46 description: For the QEMU virt machine only 47 48 description: 49 Should be "<vendor>,<chip>-clint", followed by "sifive,clint<version>" 50 when compatible with a SiFive CLINT. Please refer to 51 sifive-blocks-ip-versioning.txt for details regarding the latter. 52 53 reg: 54 maxItems: 1 55 56 interrupts-extended: 57 minItems: 1 58 maxItems: 4095 59 60additionalProperties: false 61 62required: 63 - compatible 64 - reg 65 - interrupts-extended 66 67examples: 68 - | 69 timer@2000000 { 70 compatible = "sifive,fu540-c000-clint", "sifive,clint0"; 71 interrupts-extended = <&cpu1intc 3>, <&cpu1intc 7>, 72 <&cpu2intc 3>, <&cpu2intc 7>, 73 <&cpu3intc 3>, <&cpu3intc 7>, 74 <&cpu4intc 3>, <&cpu4intc 7>; 75 reg = <0x2000000 0x10000>; 76 }; 77... 78