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Diffstat (limited to 'dts/Bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt')
| -rw-r--r-- | dts/Bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/dts/Bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt b/dts/Bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt deleted file mode 100644 index 4438432bfe..0000000000 --- a/dts/Bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt +++ /dev/null @@ -1,127 +0,0 @@ -Xilinx IPI Mailbox Controller -======================================== - -The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage -messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI -agent owns registers used for notification and buffers for message. - - +-------------------------------------+ - | Xilinx ZynqMP IPI Controller | - +-------------------------------------+ - +--------------------------------------------------+ -ATF | | - | | - | | - +--------------------------+ | - | | - | | - +--------------------------------------------------+ - +------------------------------------------+ - | +----------------+ +----------------+ | -Hardware | | IPI Agent | | IPI Buffers | | - | | Registers | | | | - | | | | | | - | +----------------+ +----------------+ | - | | - | Xilinx IPI Agent Block | - +------------------------------------------+ - - -Controller Device Node: -=========================== -Required properties: --------------------- -IPI agent node: -- compatible: Shall be: "xlnx,zynqmp-ipi-mailbox" -- interrupt-parent: Phandle for the interrupt controller -- interrupts: Interrupt information corresponding to the - interrupt-names property. -- xlnx,ipi-id: local Xilinx IPI agent ID -- #address-cells: number of address cells of internal IPI mailbox nodes -- #size-cells: number of size cells of internal IPI mailbox nodes - -Internal IPI mailbox node: -- reg: IPI buffers address ranges -- reg-names: Names of the reg resources. It should have: - * local_request_region - - IPI request msg buffer written by local and read - by remote - * local_response_region - - IPI response msg buffer written by local and read - by remote - * remote_request_region - - IPI request msg buffer written by remote and read - by local - * remote_response_region - - IPI response msg buffer written by remote and read - by local -- #mbox-cells: Shall be 1. It contains: - * tx(0) or rx(1) channel -- xlnx,ipi-id: remote Xilinx IPI agent ID of which the mailbox is - connected to. - -Optional properties: --------------------- -- method: The method of accessing the IPI agent registers. - Permitted values are: "smc" and "hvc". Default is - "smc". - -Client Device Node: -=========================== -Required properties: --------------------- -- mboxes: Standard property to specify a mailbox - (See ./mailbox.txt) -- mbox-names: List of identifier strings for each mailbox - channel. - -Example: -=========================== - zynqmp_ipi { - compatible = "xlnx,zynqmp-ipi-mailbox"; - interrupt-parent = <&gic>; - interrupts = <0 29 4>; - xlnx,ipi-id = <0>; - #address-cells = <1>; - #size-cells = <1>; - ranges; - - /* APU<->RPU0 IPI mailbox controller */ - ipi_mailbox_rpu0: mailbox@ff90400 { - reg = <0xff990400 0x20>, - <0xff990420 0x20>, - <0xff990080 0x20>, - <0xff9900a0 0x20>; - reg-names = "local_request_region", - "local_response_region", - "remote_request_region", - "remote_response_region"; - #mbox-cells = <1>; - xlnx,ipi-id = <1>; - }; - /* APU<->RPU1 IPI mailbox controller */ - ipi_mailbox_rpu1: mailbox@ff990440 { - reg = <0xff990440 0x20>, - <0xff990460 0x20>, - <0xff990280 0x20>, - <0xff9902a0 0x20>; - reg-names = "local_request_region", - "local_response_region", - "remote_request_region", - "remote_response_region"; - #mbox-cells = <1>; - xlnx,ipi-id = <2>; - }; - }; - rpu0 { - ... - mboxes = <&ipi_mailbox_rpu0 0>, - <&ipi_mailbox_rpu0 1>; - mbox-names = "tx", "rx"; - }; - rpu1 { - ... - mboxes = <&ipi_mailbox_rpu1 0>, - <&ipi_mailbox_rpu1 1>; - mbox-names = "tx", "rx"; - }; |