0001 Texas Instruments' Message Manager Driver
0002 ========================================
0003
0004 The Texas Instruments' Message Manager is a mailbox controller that has
0005 configurable queues selectable at SoC(System on Chip) integration. The Message
0006 manager is broken up into queues in different address regions that are called
0007 "proxies" - each instance is unidirectional and is instantiated at SoC
0008 integration level to indicate receive or transmit path.
0009
0010 Message Manager Device Node:
0011 ===========================
0012 Required properties:
0013 --------------------
0014 - compatible: Shall be: "ti,k2g-message-manager"
0015 - reg-names queue_proxy_region - Map the queue proxy region.
0016 queue_state_debug_region - Map the queue state debug
0017 region.
0018 - reg: Contains the register map per reg-names.
0019 - #mbox-cells Shall be 2. Contains the queue ID and proxy ID in that
0020 order referring to the transfer path.
0021 - interrupt-names: Contains interrupt names matching the rx transfer path
0022 for a given SoC. Receive interrupts shall be of the
0023 format: "rx_<QID>".
0024 For ti,k2g-message-manager, this shall contain:
0025 "rx_005", "rx_057"
0026 - interrupts: Contains the interrupt information corresponding to
0027 interrupt-names property.
0028
0029 Example(K2G):
0030 ------------
0031
0032 msgmgr: msgmgr@2a00000 {
0033 compatible = "ti,k2g-message-manager";
0034 #mbox-cells = <2>;
0035 reg-names = "queue_proxy_region", "queue_state_debug_region";
0036 reg = <0x02a00000 0x400000>, <0x028c3400 0x400>;
0037 interrupt-names = "rx_005", "rx_057";
0038 interrupts = <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
0039 <GIC_SPI 327 IRQ_TYPE_LEVEL_HIGH>;
0040 };
0041
0042 pmmc: pmmc {
0043 [...]
0044 mbox-names = "rx", "tx";
0045 # RX queue ID is 5, proxy ID is 2
0046 # TX queue ID is 0, proxy ID is 0
0047 mboxes= <&msgmgr 5 2>,
0048 <&msgmgr 0 0>;
0049 [...]
0050 };
