Texas Instruments' Secure Proxy
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========================================
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The Texas Instruments' secure proxy is a mailbox controller that has
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configurable queues selectable at SoC(System on Chip) integration. The
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Message manager is broken up into different address regions that are
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called "threads" or "proxies" - each instance is unidirectional and is
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instantiated at SoC integration level by system controller to indicate
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receive or transmit path.
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Message Manager Device Node:
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===========================
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Required properties:
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--------------------
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- compatible: Shall be "ti,am654-secure-proxy"
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- reg-names target_data - Map the proxy data region
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rt - Map the realtime status region
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scfg - Map the configuration region
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- reg: Contains the register map per reg-names.
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- #mbox-cells Shall be 1 and shall refer to the transfer path
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called thread.
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- interrupt-names: Contains interrupt names matching the rx transfer path
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for a given SoC. Receive interrupts shall be of the
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format: "rx_<PID>".
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- interrupts: Contains the interrupt information corresponding to
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interrupt-names property.
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Example(AM654):
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------------
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secure_proxy: mailbox@32c00000 {
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compatible = "ti,am654-secure-proxy";
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#mbox-cells = <1>;
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reg-names = "target_data", "rt", "scfg";
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reg = <0x0 0x32c00000 0x0 0x100000>,
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<0x0 0x32400000 0x0 0x100000>,
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<0x0 0x32800000 0x0 0x100000>;
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interrupt-names = "rx_011";
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interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
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};
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dmsc: dmsc {
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[...]
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mbox-names = "rx", "tx";
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# RX Thread ID is 11
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# TX Thread ID is 13
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mboxes= <&secure_proxy 11>,
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<&secure_proxy 13>;
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[...]
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};
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