Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/hwlock/qcom-hwspinlock.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Qualcomm Hardware Mutex Block
   8
   9 maintainers:
  10   - Bjorn Andersson <bjorn.andersson@linaro.org>
  11
  12 description:
  13   The hardware block provides mutexes utilized between different processors on
  14   the SoC as part of the communication protocol used by these processors.
  15
  16 properties:
  17   compatible:
  18     oneOf:
  19       - enum:
  20           - qcom,sfpb-mutex
  21           - qcom,tcsr-mutex
  22       - items:
  23           - enum:
  24               - qcom,apq8084-tcsr-mutex
  25               - qcom,ipq6018-tcsr-mutex
  26               - qcom,msm8226-tcsr-mutex
  27               - qcom,msm8994-tcsr-mutex
  28           - const: qcom,tcsr-mutex
  29       - items:
  30           - enum:
  31               - qcom,msm8974-tcsr-mutex
  32           - const: qcom,tcsr-mutex
  33           - const: syscon
  34
  35   reg:
  36     maxItems: 1
  37
  38   '#hwlock-cells':
  39     const: 1
  40
  41 required:
  42   - compatible
  43   - reg
  44   - '#hwlock-cells'
  45
  46 additionalProperties: false
  47
  48 examples:
  49   - |
  50     hwlock@1f40000 {
  51         compatible = "qcom,tcsr-mutex";
  52         reg = <0x01f40000 0x40000>;
  53         #hwlock-cells = <1>;
  54     };
  55 ...