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diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smsm.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,smsm.txt deleted file mode 100644 index 2993b5a97dd6..000000000000 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,smsm.txt +++ /dev/null @@ -1,104 +0,0 @@ -Qualcomm Shared Memory State Machine - -The Shared Memory State Machine facilitates broadcasting of single bit state -information between the processors in a Qualcomm SoC. Each processor is -assigned 32 bits of state that can be modified. A processor can through a -matrix of bitmaps signal subscription of notifications upon changes to a -certain bit owned by a certain remote processor. - -- compatible: - Usage: required - Value type: <string> - Definition: must be one of: - "qcom,smsm" - -- qcom,ipc-N: - Usage: required - Value type: <prop-encoded-array> - Definition: three entries specifying the outgoing ipc bit used for - signaling the N:th remote processor - - phandle to a syscon node representing the apcs registers - - u32 representing offset to the register within the syscon - - u32 representing the ipc bit within the register - -- qcom,local-host: - Usage: optional - Value type: <u32> - Definition: identifier of the local processor in the list of hosts, or - in other words specifier of the column in the subscription - matrix representing the local processor - defaults to host 0 - -- #address-cells: - Usage: required - Value type: <u32> - Definition: must be 1 - -- #size-cells: - Usage: required - Value type: <u32> - Definition: must be 0 - -= SUBNODES -Each processor's state bits are described by a subnode of the smsm device node. -Nodes can either be flagged as an interrupt-controller to denote a remote -processor's state bits or the local processors bits. The node names are not -important. - -- reg: - Usage: required - Value type: <u32> - Definition: specifies the offset, in words, of the first bit for this - entry - -- #qcom,smem-state-cells: - Usage: required for local entry - Value type: <u32> - Definition: must be 1 - denotes bit number - -- interrupt-controller: - Usage: required for remote entries - Value type: <empty> - Definition: marks the entry as a interrupt-controller and the state bits - to belong to a remote processor - -- #interrupt-cells: - Usage: required for remote entries - Value type: <u32> - Definition: must be 2 - denotes bit number and IRQ flags - -- interrupts: - Usage: required for remote entries - Value type: <prop-encoded-array> - Definition: one entry specifying remote IRQ used by the remote processor - to signal changes of its state bits - - -= EXAMPLE -The following example shows the SMEM setup for controlling properties of the -wireless processor, defined from the 8974 apps processor's point-of-view. It -encompasses one outbound entry and the outgoing interrupt for the wireless -processor. - -smsm { - compatible = "qcom,smsm"; - - #address-cells = <1>; - #size-cells = <0>; - - qcom,ipc-3 = <&apcs 8 19>; - - apps_smsm: apps@0 { - reg = <0>; - - #qcom,smem-state-cells = <1>; - }; - - wcnss_smsm: wcnss@7 { - reg = <7>; - interrupts = <0 144 1>; - - interrupt-controller; - #interrupt-cells = <2>; - }; -}; |