162306a36Sopenharmony_ci# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 262306a36Sopenharmony_ci%YAML 1.2 362306a36Sopenharmony_ci--- 462306a36Sopenharmony_ci$id: http://devicetree.org/schemas/mailbox/mtk,adsp-mbox.yaml# 562306a36Sopenharmony_ci$schema: http://devicetree.org/meta-schemas/core.yaml# 662306a36Sopenharmony_ci 762306a36Sopenharmony_cititle: Mediatek ADSP mailbox 862306a36Sopenharmony_ci 962306a36Sopenharmony_cimaintainers: 1062306a36Sopenharmony_ci - Allen-KH Cheng <Allen-KH.Cheng@mediatek.com> 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_cidescription: | 1362306a36Sopenharmony_ci The MTK ADSP mailbox Inter-Processor Communication (IPC) enables the SoC 1462306a36Sopenharmony_ci to communicate with ADSP by passing messages through two mailbox channels. 1562306a36Sopenharmony_ci The MTK ADSP mailbox IPC also provides the ability for one processor to 1662306a36Sopenharmony_ci signal the other processor using interrupts. 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ciproperties: 1962306a36Sopenharmony_ci compatible: 2062306a36Sopenharmony_ci enum: 2162306a36Sopenharmony_ci - mediatek,mt8195-adsp-mbox 2262306a36Sopenharmony_ci - mediatek,mt8186-adsp-mbox 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci "#mbox-cells": 2562306a36Sopenharmony_ci const: 0 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ci reg: 2862306a36Sopenharmony_ci maxItems: 1 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci interrupts: 3162306a36Sopenharmony_ci maxItems: 1 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_cirequired: 3462306a36Sopenharmony_ci - compatible 3562306a36Sopenharmony_ci - "#mbox-cells" 3662306a36Sopenharmony_ci - reg 3762306a36Sopenharmony_ci - interrupts 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ciadditionalProperties: false 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ciexamples: 4262306a36Sopenharmony_ci - | 4362306a36Sopenharmony_ci #include <dt-bindings/interrupt-controller/arm-gic.h> 4462306a36Sopenharmony_ci #include <dt-bindings/interrupt-controller/irq.h> 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_ci adsp_mailbox0:mailbox@10816000 { 4762306a36Sopenharmony_ci compatible = "mediatek,mt8195-adsp-mbox"; 4862306a36Sopenharmony_ci #mbox-cells = <0>; 4962306a36Sopenharmony_ci reg = <0x10816000 0x1000>; 5062306a36Sopenharmony_ci interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>; 5162306a36Sopenharmony_ci }; 52