Add binding for ZynqMP R5 OpenAMP. Represent the RPU domain resources in one device node. Each RPU processor is a subnode of the top RPU domain node. Signed-off-by: Jason Wu <j.wu@xxxxxxxxxx> Signed-off-by: Wendy Liang <jliang@xxxxxxxxxx> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx> Signed-off-by: Ben Levinsky <ben.levinsky@xxxxxxxxxx> --- v25: - grammar in device tree binding's comments --- .../xilinx,zynqmp-r5-remoteproc.yaml | 223 ++++++++++++++++++ 1 file changed, 223 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml b/Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml new file mode 100644 index 000000000000..b9412c2def7b --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml @@ -0,0 +1,223 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Xilinx R5 remote processor controller bindings + +description: + This document defines the binding for the remoteproc component that loads and + boots firmwares on the Xilinx Zynqmp and Versal family chipsets. + + Note that the Linux has global addressing view of the R5-related memory (TCM) + so the absolute address ranges are provided in TCM reg's. + +maintainers: + - Ed Mooring <ed.mooring@xxxxxxxxxx> + - Ben Levinsky <ben.levinsky@xxxxxxxxxx> + +properties: + $nodename: + pattern: "^r5fss(@.*)?" + + compatible: + enum: + - xlnx,zynqmp-r5-remoteproc + + reg: + items: + - description: Address and Size of Xilinx RPU Configuration register + + "#address-cells": + const: 2 + + "#size-cells": + const: 2 + + ranges: true + +# Optional properties: +# -------------------- + xlnx,cluster-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + Configuration Mode for the Dual R5F cores within the R5F cluster. + Should be either a value of 1 (LockStep mode) or 0 (Split mode), + default is LockStep mode if omitted. + + +#R5F Processor Child Nodes: +# ========================== + +patternProperties: + "^r5f_[a-f0-9]+$": + type: object + description: | + The R5F Sub-System device node should define one or two R5F child nodes, + each node representing a Xilinx instantiation of the Arm Cortex R5F core. + There should be one or two child nodes if the R5F is in Split mode and + one child node if the R5F is in Lockstep mode. + + In Split mode each R5F core has two associated TCM Banks. R5_0 has + TCM Banks 0A and 0B and R5_1 has TCM Banks 1A and 1B. + + In Lockstep mode only one R5F child node should be defined. This one + child has access to TCM Banks 0A, 0B, 1A and 1B and any of the four can + be included in the child R5F's sram property. + + The example below shows Split mode with two child nodes. + + properties: + compatible: + enum: + - xilinx,r5f + +# The following properties are mandatory for R5F Core0 in both LockStep and Split +# modes, and are mandatory for R5F Core1 _only_ in Split mode. + + memory-region: + description: | + Phandles to the memory nodes to be associated with the + The reserved memory nodes should be carveout nodes, and + should be defined with a "no-map" property as per the bindings in + Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt + minItems: 1 + maxItems: 6 + items: + - description: Region used for dynamic DMA allocations like vrings and + vring buffers + - description: Region reserved for firmware image sections + additionalItems: true + + power-domain: + description: | + Power node ID that is used to uniquely identify the RPU for Xilinx + Power Management. + maxItems: 1 + +# Optional properties: +# -------------------- +# The following properties are optional properties for each of the R5F cores: + + mboxes: + description: | + Standard property to specify a mailbox + This property is required only if the rpmsg/virtio functionality + is used + + Refer to the zynqmp-ipi-mailbox documentation for client usage of this + property + maxItems: 1 + + mbox-names: + description: | + Refer to the zynqmp-ipi-mailbox documentation for client usage of this + property + items: + - const: tx + - const: rx + + sram: + $ref: /schemas/types.yaml#/definitions/phandle-array + minItems: 1 + maxItems: 4 + description: | + Phandles to one or more reserved on-chip SRAM regions. The regions + should be defined as child nodes of the respective SRAM node, and + should be defined as per the generic bindings in + Documentation/devicetree/bindings/sram/sram.yaml + + required: + - compatible + - power-domain + + unevaluatedProperties: false + +required: + - reg + - compatible + - "#address-cells" + - "#size-cells" + - ranges + +additionalProperties: false + +examples: + - | + / { + compatible = "xlnx,zynqmp-zcu102-rev1.0", "xlnx,zynqmp-zcu102", "xlnx,zynqmp"; + #address-cells = <2>; + #size-cells = <2>; + model = "ZynqMP ZCU102 "; + + zynqmp_ipi1 { + compatible = "xlnx,zynqmp-ipi-mailbox"; + interrupt-parent = <&gic>; + interrupts = <0 33 4>; + xlnx,ipi-id = <5>; + #address-cells = <1>; + #size-cells = <0>; + + ipi_mailbox_rpu0: mailbox@ff990600 { + reg = <0xff990600 0x20>, + <0xff990620 0x20>, + <0xff9900c0 0x20>, + <0xff9900e0 0x20>; + reg-names = "local_request_region", + "local_response_region", + "remote_request_region", + "remote_response_region"; + #mbox-cells = <1>; + xlnx,ipi-id = <3>; + }; + ipi_mailbox_rpu1: mailbox@ff990780 { + reg = <0xff990780 0x20>, + <0xff9907a0 0x20>, + <0xff9907c0 0x20>, + <0xff9905a0 0x20>; + reg-names = "local_request_region", + "local_response_region", + "remote_request_region", + "remote_response_region"; + #mbox-cells = <1>; + xlnx,ipi-id = <3>; + }; + }; + + r5fss@ff9a0000 { + compatible = "xlnx,zynqmp-r5-remoteproc"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + reg = <0x0 0xff9a0000 0x0 0x10000>; + xlnx,cluster-mode = <0>; + + r5f_0 { + compatible = "xilinx,r5f"; + memory-region = <&elf_load0>, + <&rpu0vdev0vring0>, + <&rpu0vdev0vring1>, + <&rpu0vdev0buffer>; + sram = <&tcm_0a>, <&tcm_0b>; + mboxes = <&ipi_mailbox_rpu0 0x0 &ipi_mailbox_rpu0 0x1>; + mbox-names = "tx", "rx"; + power-domain = <0x7>; + }; + r5f_1 { + compatible = "xilinx,r5f"; + memory-region = <&elf_load1>, + <&rpu1vdev0vring0>, + <&rpu1vdev0vring1>, + <&rpu1vdev0buffer>; + sram = <&tcm_1a>, <&tcm_1b>; + mboxes = <&ipi_mailbox_rpu1 0x0 &ipi_mailbox_rpu1 0x1>; + mbox-names = "tx", "rx"; + power-domain = <0x8>; + }; + + }; + }; + +... -- 2.17.1
