1*4882a593SmuzhiyunHisilicon Hi3660 Mailbox Controller 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunHisilicon Hi3660 mailbox controller supports up to 32 channels. Messages 4*4882a593Smuzhiyunare passed between processors, including application & communication 5*4882a593Smuzhiyunprocessors, MCU, HIFI, etc. Each channel is unidirectional and accessed 6*4882a593Smuzhiyunby using MMIO registers; it supports maximum to 8 words message. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunController 9*4882a593Smuzhiyun---------- 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunRequired properties: 12*4882a593Smuzhiyun- compatible: : Shall be "hisilicon,hi3660-mbox" 13*4882a593Smuzhiyun- reg: : Offset and length of the device's register set 14*4882a593Smuzhiyun- #mbox-cells: : Must be 3 15*4882a593Smuzhiyun <&phandle channel dst_irq ack_irq> 16*4882a593Smuzhiyun phandle : Label name of controller 17*4882a593Smuzhiyun channel : Channel number 18*4882a593Smuzhiyun dst_irq : Remote interrupt vector 19*4882a593Smuzhiyun ack_irq : Local interrupt vector 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun- interrupts: : Contains the two IRQ lines for mailbox. 22*4882a593Smuzhiyun 23*4882a593SmuzhiyunExample: 24*4882a593Smuzhiyun 25*4882a593Smuzhiyunmailbox: mailbox@e896b000 { 26*4882a593Smuzhiyun compatible = "hisilicon,hi3660-mbox"; 27*4882a593Smuzhiyun reg = <0x0 0xe896b000 0x0 0x1000>; 28*4882a593Smuzhiyun interrupts = <0x0 0xc0 0x4>, 29*4882a593Smuzhiyun <0x0 0xc1 0x4>; 30*4882a593Smuzhiyun #mbox-cells = <3>; 31*4882a593Smuzhiyun}; 32*4882a593Smuzhiyun 33*4882a593SmuzhiyunClient 34*4882a593Smuzhiyun------ 35*4882a593Smuzhiyun 36*4882a593SmuzhiyunRequired properties: 37*4882a593Smuzhiyun- compatible : See the client docs 38*4882a593Smuzhiyun- mboxes : Standard property to specify a Mailbox (See ./mailbox.txt) 39*4882a593Smuzhiyun Cells must match 'mbox-cells' (See Controller docs above) 40*4882a593Smuzhiyun 41*4882a593SmuzhiyunOptional properties 42*4882a593Smuzhiyun- mbox-names : Name given to channels seen in the 'mboxes' property. 43*4882a593Smuzhiyun 44*4882a593SmuzhiyunExample: 45*4882a593Smuzhiyun 46*4882a593Smuzhiyunstub_clock: stub_clock@e896b500 { 47*4882a593Smuzhiyun compatible = "hisilicon,hi3660-stub-clk"; 48*4882a593Smuzhiyun reg = <0x0 0xe896b500 0x0 0x0100>; 49*4882a593Smuzhiyun #clock-cells = <1>; 50*4882a593Smuzhiyun mboxes = <&mailbox 13 3 0>; 51*4882a593Smuzhiyun}; 52