Kernel-4.18.0-80.el8_qcom-hwspinlock

Qualcomm Hardware Mutex Block:

The hardware block provides mutexes utilized between different processors on
the SoC as part of the communication protocol used by these processors.

• compatible:
  Usage: required
  Value type:
  Definition: must be one of:

        "qcom,sfpb-mutex",
        "qcom,tcsr-mutex"
  

• syscon:
  Usage: required
  Value type:
  Definition: one cell containing:

        syscon phandle
        offset of the hwmutex block within the syscon
        stride of the hwmutex registers
  

• #hwlock-cells:
  Usage: required
  Value type:
  Definition: must be 1, the specified cell represent the lock id

        (hwlock standard property, see hwlock.txt)
  

Example:

tcsr_mutex_block: syscon@fd484000 {
    compatible = "syscon";
    reg = <0xfd484000 0x2000>;
};

hwlock@fd484000 {
    compatible = "qcom,tcsr-mutex";
    syscon = <&tcsr_mutex_block 0 0x80>;

    #hwlock-cells = <1>;
};