1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/bus/qcom,ssbi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Qualcomm Single-wire Serial Bus Interface (SSBI)
8
9 description:
10 Some Qualcomm MSM devices contain a point-to-point serial bus used to
11 communicate with a limited range of devices (mostly power management
12 chips).
13
14 maintainers:
15 - Andy Gross <agross@kernel.org>
16 - Bjorn Andersson <andersson@kernel.org>
17
18 properties:
19 compatible:
20 const: qcom,ssbi
21
22 reg:
23 maxItems: 1
24
25 qcom,controller-type:
26 description:
27 Indicates the SSBI bus variant the controller should use to talk
28 with the slave device. The type chosen is determined by the attached
29 slave.
30 enum:
31 - ssbi
32 - ssbi2
33 - pmic-arbiter
34
35 pmic:
36 $ref: /schemas/mfd/qcom-pm8xxx.yaml#
37
38 required:
39 - compatible
40 - reg
41 - qcom,controller-type
42
43 additionalProperties: false
44
45 examples:
46 - |
47 #include <dt-bindings/interrupt-controller/irq.h>
48 ssbi@c00000 {
49 compatible = "qcom,ssbi";
50 reg = <0x00c00000 0x1000>;
51 qcom,controller-type = "pmic-arbiter";
52
53 pmic {
54 compatible = "qcom,pm8821";
55 interrupt-parent = <&msmgpio>;
56 interrupts = <76 IRQ_TYPE_LEVEL_LOW>;
57 #interrupt-cells = <2>;
58 interrupt-controller;
59 #address-cells = <1>;
60 #size-cells = <0>;
61 };
62 };
63 ...
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