Qualcomm Technologies, Inc. IPCLite Framework This binding describes IPCLite protocol within the system. IPCLite is a light weight mechanism for communication between subsystem-pairs. This protocol will be primarily used to support low-latency signalling for Global Synx framework. - compatible : Usage: required Value type: Definition: must be "qcom,ipclite" - label: Usage: optional Value type: Definition: should specify the subsystem name this edge corresponds to. - global_atomic: Usage: required Value type: Definition: this property specifies if the core supports global atomic operations 1 if cores supports, 0 if core doesn't support global atomic operations - interrupts: Usage: required Value type: Definition: should specify the IRQ used by the remote processor to signal this processor about communication related events - qcom,remote-pid: Usage: required for ipcmem Value type: Definition: specifies the identifier of the remote endpoint of this edge - mboxes: Usage: required Value type: Definition: reference to the "rpm_hlos" mailbox in APCS, as described in mailbox/mailbox.txt = EXAMPLE The following example represents the IPCLite node along with cdsp sub-node. ipclite { compatible = "qcom,ipclite"; memory-region = <&global_sync_mem>; #address-cells = <1>; #size-cells = <1>; ranges; ipclite_cdsp: cdsp { qcom,remote-pid = <5>; label = "cdsp"; global_atomic = <0>; ipclite_signal_0 { index = <0>; mboxes = <&ipcc_compute_l0 IPCC_CLIENT_CDSP IPCC_COMPUTE_L0_SIGNAL_IPCLITE_MSG>; interrupt-parent = <&ipcc_compute_l0>; interrupts = ; }; ipclite_signal_1 { index = <1>; mboxes = <&ipcc_compute_l0 IPCC_CLIENT_CDSP IPCC_COMPUTE_L0_SIGNAL_IPCLITE_MEM_INIT>; interrupt-parent = <&ipcc_compute_l0>; interrupts = ; }; ipclite_signal_2 { index = <2>; mboxes = <&ipcc_compute_l0 IPCC_CLIENT_CDSP IPCC_COMPUTE_L0_SIGNAL_IPCLITE_VERSION>; interrupt-parent = <&ipcc_compute_l0>; interrupts = ; }; }; };