1 Texas Instruments' Message Manager Driver 1 Texas Instruments' Message Manager Driver
2 ======================================== 2 ========================================
3 3
4 The Texas Instruments' Message Manager is a ma 4 The Texas Instruments' Message Manager is a mailbox controller that has
5 configurable queues selectable at SoC(System o 5 configurable queues selectable at SoC(System on Chip) integration. The Message
6 manager is broken up into queues in different 6 manager is broken up into queues in different address regions that are called
7 "proxies" - each instance is unidirectional an 7 "proxies" - each instance is unidirectional and is instantiated at SoC
8 integration level to indicate receive or trans 8 integration level to indicate receive or transmit path.
9 9
10 Message Manager Device Node: 10 Message Manager Device Node:
11 =========================== 11 ===========================
12 Required properties: 12 Required properties:
13 -------------------- 13 --------------------
14 - compatible: Shall be: "ti,k2g-mess 14 - compatible: Shall be: "ti,k2g-message-manager"
15 - reg-names queue_proxy_region - M 15 - reg-names queue_proxy_region - Map the queue proxy region.
16 queue_state_debug_regi 16 queue_state_debug_region - Map the queue state debug
17 region. 17 region.
18 - reg: Contains the register 18 - reg: Contains the register map per reg-names.
19 - #mbox-cells Shall be 2. Contains t 19 - #mbox-cells Shall be 2. Contains the queue ID and proxy ID in that
20 order referring to the 20 order referring to the transfer path.
21 - interrupt-names: Contains interrupt nam 21 - interrupt-names: Contains interrupt names matching the rx transfer path
22 for a given SoC. Recei 22 for a given SoC. Receive interrupts shall be of the
23 format: "rx_<QID>". 23 format: "rx_<QID>".
24 For ti,k2g-message-man 24 For ti,k2g-message-manager, this shall contain:
25 "rx_005", "rx_ 25 "rx_005", "rx_057"
26 - interrupts: Contains the interrupt 26 - interrupts: Contains the interrupt information corresponding to
27 interrupt-names proper 27 interrupt-names property.
28 28
29 Example(K2G): 29 Example(K2G):
30 ------------ 30 ------------
31 31
32 msgmgr: msgmgr@2a00000 { 32 msgmgr: msgmgr@2a00000 {
33 compatible = "ti,k2g-message-m 33 compatible = "ti,k2g-message-manager";
34 #mbox-cells = <2>; 34 #mbox-cells = <2>;
35 reg-names = "queue_proxy_regio 35 reg-names = "queue_proxy_region", "queue_state_debug_region";
36 reg = <0x02a00000 0x400000>, < 36 reg = <0x02a00000 0x400000>, <0x028c3400 0x400>;
37 interrupt-names = "rx_005", "r 37 interrupt-names = "rx_005", "rx_057";
38 interrupts = <GIC_SPI 324 IRQ_ 38 interrupts = <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
39 <GIC_SPI 327 IRQ_ 39 <GIC_SPI 327 IRQ_TYPE_LEVEL_HIGH>;
40 }; 40 };
41 41
42 pmmc: pmmc { 42 pmmc: pmmc {
43 [...] 43 [...]
44 mbox-names = "rx", "tx"; 44 mbox-names = "rx", "tx";
45 # RX queue ID is 5, proxy ID i 45 # RX queue ID is 5, proxy ID is 2
46 # TX queue ID is 0, proxy ID i 46 # TX queue ID is 0, proxy ID is 0
47 mboxes= <&msgmgr 5 2>, 47 mboxes= <&msgmgr 5 2>,
48 <&msgmgr 0 0>; 48 <&msgmgr 0 0>;
49 [...] 49 [...]
50 }; 50 };
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