Documentation/devicetree/bindings/bus/qcom,ssbi.yaml

   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 ...