Documentation/devicetree/bindings/mailbox/ti,message-manager.txt

   1 Texas Instruments' Message Manager Driver
   2 ========================================
   3
   4 The Texas Instruments' Message Manager is a mailbox controller that has
   5 configurable queues selectable at SoC(System on Chip) integration. The Message
   6 manager is broken up into queues in different address regions that are called
   7 "proxies" - each instance is unidirectional and is instantiated at SoC
   8 integration level to indicate receive or transmit path.
   9
  10 Message Manager Device Node:
  11 ===========================
  12 Required properties:
  13 --------------------
  14 - compatible:           Shall be: "ti,k2g-message-manager"
  15 - reg-names             queue_proxy_region - Map the queue proxy region.
  16                         queue_state_debug_region - Map the queue state debug
  17                         region.
  18 - reg:                  Contains the register map per reg-names.
  19 - #mbox-cells           Shall be 2. Contains the queue ID and proxy ID in that
  20                         order referring to the transfer path.
  21 - interrupt-names:      Contains interrupt names matching the rx transfer path
  22                         for a given SoC. Receive interrupts shall be of the
  23                         format: "rx_<QID>_<PID>".
  24                         For ti,k2g-message-manager, this shall contain:
  25                                 "rx_005_002", "rx_057_002"
  26 - interrupts:           Contains the interrupt information corresponding to
  27                         interrupt-names property.
  28
  29 Example(K2G):
  30 ------------
  31
  32         msgmgr: msgmgr@02a00000 {
  33                 compatible = "ti,k2g-message-manager";
  34                 #mbox-cells = <2>;
  35                 reg-names = "queue_proxy_region", "queue_state_debug_region";
  36                 reg = <0x02a00000 0x400000>, <0x028c3400 0x400>;
  37                 interrupt-names = "rx_005", "rx_057";
  38                 interrupts = <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
  39                              <GIC_SPI 327 IRQ_TYPE_LEVEL_HIGH>;
  40         };
  41
  42         pmmc: pmmc {
  43                 [...]
  44                 mbox-names = "rx", "tx";
  45                 # RX queue ID is 5, proxy ID is 2
  46                 # TX queue ID is 0, proxy ID is 0
  47                 mboxes= <&msgmgr 5 2>,
  48                         <&msgmgr 0 0>;
  49                 [...]
  50         };