1*4882a593SmuzhiyunAltera Mailbox Driver 2*4882a593Smuzhiyun===================== 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunRequired properties: 5*4882a593Smuzhiyun- compatible : "altr,mailbox-1.0". 6*4882a593Smuzhiyun- reg : physical base address of the mailbox and length of 7*4882a593Smuzhiyun memory mapped region. 8*4882a593Smuzhiyun- #mbox-cells: Common mailbox binding property to identify the number 9*4882a593Smuzhiyun of cells required for the mailbox specifier. Should be 1. 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunOptional properties: 12*4882a593Smuzhiyun- interrupts : interrupt number. The interrupt specifier format 13*4882a593Smuzhiyun depends on the interrupt controller parent. 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunExample: 16*4882a593Smuzhiyun mbox_tx: mailbox@100 { 17*4882a593Smuzhiyun compatible = "altr,mailbox-1.0"; 18*4882a593Smuzhiyun reg = <0x100 0x8>; 19*4882a593Smuzhiyun interrupt-parent = < &gic_0 >; 20*4882a593Smuzhiyun interrupts = <5>; 21*4882a593Smuzhiyun #mbox-cells = <1>; 22*4882a593Smuzhiyun }; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun mbox_rx: mailbox@200 { 25*4882a593Smuzhiyun compatible = "altr,mailbox-1.0"; 26*4882a593Smuzhiyun reg = <0x200 0x8>; 27*4882a593Smuzhiyun interrupt-parent = < &gic_0 >; 28*4882a593Smuzhiyun interrupts = <6>; 29*4882a593Smuzhiyun #mbox-cells = <1>; 30*4882a593Smuzhiyun }; 31*4882a593Smuzhiyun 32*4882a593SmuzhiyunMailbox client 33*4882a593Smuzhiyun=============== 34*4882a593Smuzhiyun"mboxes" and the optional "mbox-names" (please see 35*4882a593SmuzhiyunDocumentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value 36*4882a593Smuzhiyunof the mboxes property should contain a phandle to the mailbox controller 37*4882a593Smuzhiyundevice node and second argument is the channel index. It must be 0 (hardware 38*4882a593Smuzhiyunsupport only one channel).The equivalent "mbox-names" property value can be 39*4882a593Smuzhiyunused to give a name to the communication channel to be used by the client user. 40*4882a593Smuzhiyun 41*4882a593SmuzhiyunExample: 42*4882a593Smuzhiyun mclient0: mclient0@400 { 43*4882a593Smuzhiyun compatible = "client-1.0"; 44*4882a593Smuzhiyun reg = <0x400 0x10>; 45*4882a593Smuzhiyun mbox-names = "mbox-tx", "mbox-rx"; 46*4882a593Smuzhiyun mboxes = <&mbox_tx 0>, 47*4882a593Smuzhiyun <&mbox_rx 0>; 48*4882a593Smuzhiyun }; 49