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3b73ad3387
Message Manager's mailbox interrupts are queue based and not proxy specific. The interrupt names are wrong in the binding, however correctly reflected in the example provided. Remove the relation to proxy ID in the documentation of binding. Existing device tree descriptions follow the correct conventions already and documentation update has been missed. Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Rob Herring <robh@kernel.org>
50 lines
1.7 KiB
Text
50 lines
1.7 KiB
Text
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>".
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For ti,k2g-message-manager, this shall contain:
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"rx_005", "rx_057"
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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@2a00000 {
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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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