1a01822e9SManivannan Sadhasivam# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause 2a01822e9SManivannan Sadhasivam%YAML 1.2 3a01822e9SManivannan Sadhasivam--- 4a01822e9SManivannan Sadhasivam$id: http://devicetree.org/schemas/mailbox/qcom-ipcc.yaml# 5a01822e9SManivannan Sadhasivam$schema: http://devicetree.org/meta-schemas/core.yaml# 6a01822e9SManivannan Sadhasivam 7a01822e9SManivannan Sadhasivamtitle: Qualcomm Technologies, Inc. Inter-Processor Communication Controller 8a01822e9SManivannan Sadhasivam 9a01822e9SManivannan Sadhasivammaintainers: 10a01822e9SManivannan Sadhasivam - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> 11a01822e9SManivannan Sadhasivam 12a01822e9SManivannan Sadhasivamdescription: 13a01822e9SManivannan Sadhasivam The Inter-Processor Communication Controller (IPCC) is a centralized hardware 14a01822e9SManivannan Sadhasivam to route interrupts across various subsystems. It involves a three-level 15a01822e9SManivannan Sadhasivam addressing scheme called protocol, client and signal. For example, consider an 16a01822e9SManivannan Sadhasivam entity on the Application Processor Subsystem (APSS) that wants to listen to 17a01822e9SManivannan Sadhasivam Modem's interrupts via Shared Memory Point to Point (SMP2P) interface. In such 18a01822e9SManivannan Sadhasivam a case, the client would be Modem (client-id is 2) and the signal would be 19a01822e9SManivannan Sadhasivam SMP2P (signal-id is 2). The SMP2P itself falls under the Multiprocessor (MPROC) 20a01822e9SManivannan Sadhasivam protocol (protocol-id is 0). Refer include/dt-bindings/mailbox/qcom-ipcc.h 21a01822e9SManivannan Sadhasivam for the list of such IDs. 22a01822e9SManivannan Sadhasivam 23a01822e9SManivannan Sadhasivamproperties: 24a01822e9SManivannan Sadhasivam compatible: 25a01822e9SManivannan Sadhasivam items: 26a01822e9SManivannan Sadhasivam - enum: 27fb339971SKonrad Dybcio - qcom,sm6350-ipcc 28*1a607e10SKonrad Dybcio - qcom,sm6375-ipcc 29a01822e9SManivannan Sadhasivam - qcom,sm8250-ipcc 302a7db0d6SVinod Koul - qcom,sm8350-ipcc 31897c6756SDavid Heidelberg - qcom,sm8450-ipcc 322335f556SSai Prakash Ranjan - qcom,sc7280-ipcc 33a01822e9SManivannan Sadhasivam - const: qcom,ipcc 34a01822e9SManivannan Sadhasivam 35a01822e9SManivannan Sadhasivam reg: 36a01822e9SManivannan Sadhasivam maxItems: 1 37a01822e9SManivannan Sadhasivam 38a01822e9SManivannan Sadhasivam interrupts: 39a01822e9SManivannan Sadhasivam maxItems: 1 40a01822e9SManivannan Sadhasivam 41a01822e9SManivannan Sadhasivam interrupt-controller: true 42a01822e9SManivannan Sadhasivam 43a01822e9SManivannan Sadhasivam "#interrupt-cells": 44a01822e9SManivannan Sadhasivam const: 3 45a01822e9SManivannan Sadhasivam description: 46a01822e9SManivannan Sadhasivam The first cell is the client-id, the second cell is the signal-id and the 47a01822e9SManivannan Sadhasivam third cell is the interrupt type. 48a01822e9SManivannan Sadhasivam 49a01822e9SManivannan Sadhasivam "#mbox-cells": 50a01822e9SManivannan Sadhasivam const: 2 51a01822e9SManivannan Sadhasivam description: 52a01822e9SManivannan Sadhasivam The first cell is the client-id, and the second cell is the signal-id. 53a01822e9SManivannan Sadhasivam 54a01822e9SManivannan Sadhasivamrequired: 55a01822e9SManivannan Sadhasivam - compatible 56a01822e9SManivannan Sadhasivam - reg 57a01822e9SManivannan Sadhasivam - interrupts 58a01822e9SManivannan Sadhasivam - interrupt-controller 59a01822e9SManivannan Sadhasivam - "#interrupt-cells" 60a01822e9SManivannan Sadhasivam - "#mbox-cells" 61a01822e9SManivannan Sadhasivam 62a01822e9SManivannan SadhasivamadditionalProperties: false 63a01822e9SManivannan Sadhasivam 64a01822e9SManivannan Sadhasivamexamples: 65a01822e9SManivannan Sadhasivam - | 66a01822e9SManivannan Sadhasivam #include <dt-bindings/interrupt-controller/arm-gic.h> 67a01822e9SManivannan Sadhasivam #include <dt-bindings/mailbox/qcom-ipcc.h> 68a01822e9SManivannan Sadhasivam 69a01822e9SManivannan Sadhasivam mailbox@408000 { 70a01822e9SManivannan Sadhasivam compatible = "qcom,sm8250-ipcc", "qcom,ipcc"; 71a01822e9SManivannan Sadhasivam reg = <0x408000 0x1000>; 72a01822e9SManivannan Sadhasivam interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_HIGH>; 73a01822e9SManivannan Sadhasivam interrupt-controller; 74a01822e9SManivannan Sadhasivam #interrupt-cells = <3>; 75a01822e9SManivannan Sadhasivam #mbox-cells = <2>; 76a01822e9SManivannan Sadhasivam }; 77