sti-mailbox.txt (1374B)
1ST Microelectronics Mailbox Driver 2 3Each ST Mailbox IP currently consists of 4 instances of 32 channels. Messages 4are passed between Application and Remote processors using shared memory. 5 6Controller 7---------- 8 9Required properties: 10- compatible : Should be "st,stih407-mailbox" 11- reg : Offset and length of the device's register set 12- mbox-name : Name of the mailbox 13- #mbox-cells: : Must be 2 14 <&phandle instance channel direction> 15 phandle : Label name of controller 16 instance : Instance number 17 channel : Channel number 18 19Optional properties 20- interrupts : Contains the IRQ line for a Rx mailbox 21 22Example: 23 24mailbox0: mailbox@0 { 25 compatible = "st,stih407-mailbox"; 26 reg = <0x08f00000 0x1000>; 27 interrupts = <GIC_SPI 1 IRQ_TYPE_NONE>; 28 #mbox-cells = <2>; 29 mbox-name = "a9"; 30}; 31 32Client 33------ 34 35Required properties: 36- compatible : Many (See the client docs) 37- reg : Shared (between Application and Remote) memory address 38- mboxes : Standard property to specify a Mailbox (See ./mailbox.txt) 39 Cells must match 'mbox-cells' (See Controller docs above) 40 41Optional properties 42- mbox-names : Name given to channels seen in the 'mboxes' property. 43 44Example: 45 46mailbox_test { 47 compatible = "mailbox-test"; 48 reg = <0x[shared_memory_address], [shared_memory_size]>; 49 mboxes = <&mailbox2 0 1>, <&mailbox0 2 1>; 50 mbox-names = "tx", "rx"; 51};