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,msm8974-tcsr-mutex
  28               - qcom,msm8994-tcsr-mutex
  29           - const: qcom,tcsr-mutex
  30
  31   reg:
  32     maxItems: 1
  33
  34   '#hwlock-cells':
  35     const: 1
  36
  37 required:
  38   - compatible
  39   - reg
  40   - '#hwlock-cells'
  41
  42 additionalProperties: false
  43
  44 examples:
  45   - |
  46         tcsr_mutex: hwlock@1f40000 {
  47                 compatible = "qcom,tcsr-mutex";
  48                 reg = <0x01f40000 0x40000>;
  49                 #hwlock-cells = <1>;
  50         };
  51 ...