1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Cl 1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/mailbox/qco 4 $id: http://devicetree.org/schemas/mailbox/qcom-ipcc.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Qualcomm Technologies, Inc. Inter-Proce 7 title: Qualcomm Technologies, Inc. Inter-Processor Communication Controller
8 8
9 maintainers: 9 maintainers:
10 - Manivannan Sadhasivam <manivannan.sadhasiva 10 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
11 11
12 description: 12 description:
13 The Inter-Processor Communication Controller 13 The Inter-Processor Communication Controller (IPCC) is a centralized hardware
14 to route interrupts across various subsystem 14 to route interrupts across various subsystems. It involves a three-level
15 addressing scheme called protocol, client an 15 addressing scheme called protocol, client and signal. For example, consider an
16 entity on the Application Processor Subsyste 16 entity on the Application Processor Subsystem (APSS) that wants to listen to
17 Modem's interrupts via Shared Memory Point t 17 Modem's interrupts via Shared Memory Point to Point (SMP2P) interface. In such
18 a case, the client would be Modem (client-id 18 a case, the client would be Modem (client-id is 2) and the signal would be
19 SMP2P (signal-id is 2). The SMP2P itself fal 19 SMP2P (signal-id is 2). The SMP2P itself falls under the Multiprocessor (MPROC)
20 protocol (protocol-id is 0). Refer include/d 20 protocol (protocol-id is 0). Refer include/dt-bindings/mailbox/qcom-ipcc.h
21 for the list of such IDs. 21 for the list of such IDs.
22 22
23 properties: 23 properties:
24 compatible: 24 compatible:
25 items: 25 items:
26 - enum: 26 - enum:
27 - qcom,qcs8300-ipcc <<
28 - qcom,qdu1000-ipcc 27 - qcom,qdu1000-ipcc
29 - qcom,sa8255p-ipcc <<
30 - qcom,sa8775p-ipcc 28 - qcom,sa8775p-ipcc
31 - qcom,sc7280-ipcc 29 - qcom,sc7280-ipcc
32 - qcom,sc8280xp-ipcc 30 - qcom,sc8280xp-ipcc
33 - qcom,sdx75-ipcc 31 - qcom,sdx75-ipcc
34 - qcom,sm6350-ipcc 32 - qcom,sm6350-ipcc
35 - qcom,sm6375-ipcc 33 - qcom,sm6375-ipcc
36 - qcom,sm8250-ipcc 34 - qcom,sm8250-ipcc
37 - qcom,sm8350-ipcc 35 - qcom,sm8350-ipcc
38 - qcom,sm8450-ipcc 36 - qcom,sm8450-ipcc
39 - qcom,sm8550-ipcc 37 - qcom,sm8550-ipcc
40 - qcom,sm8650-ipcc 38 - qcom,sm8650-ipcc
41 - qcom,x1e80100-ipcc 39 - qcom,x1e80100-ipcc
42 - const: qcom,ipcc 40 - const: qcom,ipcc
43 41
44 reg: 42 reg:
45 maxItems: 1 43 maxItems: 1
46 44
47 interrupts: 45 interrupts:
48 maxItems: 1 46 maxItems: 1
49 47
50 interrupt-controller: true 48 interrupt-controller: true
51 49
52 "#interrupt-cells": 50 "#interrupt-cells":
53 const: 3 51 const: 3
54 description: 52 description:
55 The first cell is the client-id, the sec 53 The first cell is the client-id, the second cell is the signal-id and the
56 third cell is the interrupt type. 54 third cell is the interrupt type.
57 55
58 "#mbox-cells": 56 "#mbox-cells":
59 const: 2 57 const: 2
60 description: 58 description:
61 The first cell is the client-id, and the 59 The first cell is the client-id, and the second cell is the signal-id.
62 60
63 required: 61 required:
64 - compatible 62 - compatible
65 - reg 63 - reg
66 - interrupts 64 - interrupts
67 - interrupt-controller 65 - interrupt-controller
68 - "#interrupt-cells" 66 - "#interrupt-cells"
69 - "#mbox-cells" 67 - "#mbox-cells"
70 68
71 additionalProperties: false 69 additionalProperties: false
72 70
73 examples: 71 examples:
74 - | 72 - |
75 #include <dt-bindings/interrupt-controller 73 #include <dt-bindings/interrupt-controller/arm-gic.h>
76 #include <dt-bindings/mailbox/qcom-ipcc.h> 74 #include <dt-bindings/mailbox/qcom-ipcc.h>
77 75
78 mailbox@408000 { 76 mailbox@408000 {
79 compatible = "qcom,sm8250-ipcc", "qcom 77 compatible = "qcom,sm8250-ipcc", "qcom,ipcc";
80 reg = <0x408000 0x1000>; 78 reg = <0x408000 0x1000>;
81 interrupts = <GIC_SPI 229 IRQ_TYPE_LEV 79 interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_HIGH>;
82 interrupt-controller; 80 interrupt-controller;
83 #interrupt-cells = <3>; 81 #interrupt-cells = <3>;
84 #mbox-cells = <2>; 82 #mbox-cells = <2>;
85 }; 83 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.