51 lines
1.7 KiB
Plaintext
51 lines
1.7 KiB
Plaintext
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Texas Instruments' Message Manager Driver
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========================================
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The Texas Instruments' Message Manager is a mailbox controller that has
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configurable queues selectable at SoC(System on Chip) integration. The Message
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manager is broken up into queues in different address regions that are called
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"proxies" - each instance is unidirectional and is instantiated at SoC
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integration level to indicate 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,k2g-message-manager"
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- reg-names queue_proxy_region - Map the queue proxy region.
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queue_state_debug_region - Map the queue state debug
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region.
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- reg: Contains the register map per reg-names.
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- #mbox-cells Shall be 2. Contains the queue ID and proxy ID in that
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order referring to the transfer path.
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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_<QID>_<PID>".
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For ti,k2g-message-manager, this shall contain:
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"rx_005_002", "rx_057_002"
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- interrupts: Contains the interrupt information corresponding to
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interrupt-names property.
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Example(K2G):
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------------
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msgmgr: msgmgr@02a00000 {
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compatible = "ti,k2g-message-manager";
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#mbox-cells = <2>;
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reg-names = "queue_proxy_region", "queue_state_debug_region";
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reg = <0x02a00000 0x400000>, <0x028c3400 0x400>;
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interrupt-names = "rx_005", "rx_057";
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interrupts = <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 327 IRQ_TYPE_LEVEL_HIGH>;
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};
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pmmc: pmmc {
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[...]
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mbox-names = "rx", "tx";
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# RX queue ID is 5, proxy ID is 2
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# TX queue ID is 0, proxy ID is 0
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mboxes= <&msgmgr 5 2>,
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<&msgmgr 0 0>;
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[...]
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};
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