1Interconnect Provider Device Tree Bindings 2========================================= 3 4The purpose of this document is to define a common set of generic interconnect 5providers/consumers properties. 6 7 8= interconnect providers = 9 10The interconnect provider binding is intended to represent the interconnect 11controllers in the system. Each provider registers a set of interconnect 12nodes, which expose the interconnect related capabilities of the interconnect 13to consumer drivers. These capabilities can be throughput, latency, priority 14etc. The consumer drivers set constraints on interconnect path (or endpoints) 15depending on the use case. Interconnect providers can also be interconnect 16consumers, such as in the case where two network-on-chip fabrics interface 17directly. 18 19Required properties: 20- compatible : contains the interconnect provider compatible string 21- #interconnect-cells : number of cells in a interconnect specifier needed to 22 encode the interconnect node id 23 24Example: 25 26 snoc: interconnect@580000 { 27 compatible = "qcom,msm8916-snoc"; 28 #interconnect-cells = <1>; 29 reg = <0x580000 0x14000>; 30 clock-names = "bus_clk", "bus_a_clk"; 31 clocks = <&rpmcc RPM_SMD_SNOC_CLK>, 32 <&rpmcc RPM_SMD_SNOC_A_CLK>; 33 }; 34 35 36= interconnect consumers = 37 38The interconnect consumers are device nodes which dynamically express their 39bandwidth requirements along interconnect paths they are connected to. There 40can be multiple interconnect providers on a SoC and the consumer may consume 41multiple paths from different providers depending on use case and the 42components it has to interact with. 43 44Required properties: 45interconnects : Pairs of phandles and interconnect provider specifier to denote 46 the edge source and destination ports of the interconnect path. 47 48Optional properties: 49interconnect-names : List of interconnect path name strings sorted in the same 50 order as the interconnects property. Consumers drivers will use 51 interconnect-names to match interconnect paths with interconnect 52 specifier pairs. 53 54 Reserved interconnect names: 55 * dma-mem: Path from the device to the main memory of 56 the system 57 58Example: 59 60 sdhci@7864000 { 61 ... 62 interconnects = <&pnoc MASTER_SDCC_1 &bimc SLAVE_EBI_CH0>; 63 interconnect-names = "sdhc-mem"; 64 }; 65