The interconnect API is not yet using DT bindings for expressing
the relations between the API consumers and providers. This is
posted a separate patch as it needs further discussions on how
to represent this with DT.
Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxx>
---
.../bindings/interconnect/interconnect.txt | 75 ++++++++++++++++++++++
1 file changed, 75 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interconnect/interconnect.txt
diff --git a/Documentation/devicetree/bindings/interconnect/interconnect.txt b/Documentation/devicetree/bindings/interconnect/interconnect.txt
new file mode 100644
index 000000000000..e38a29db981e
--- /dev/null
+++ b/Documentation/devicetree/bindings/interconnect/interconnect.txt
@@ -0,0 +1,75 @@
+Interconnect Provider Device Tree Bindings
+=========================================
+
+The purpose of this document is to define a common set of generic interconnect
+providers/consumers properties.
+
+
+= interconnect providers =
+
+The interconnect provider binding is intended to represent the interconnect
+controllers in the system. Each provider registers a set of interconnect
+nodes, which expose the interconnect related capabilities of the interconnect
+to consumer drivers. These capabilities can be throughput, latency, priority
+etc. The consumer drivers set constraints on interconnect path (or endpoints)
+depending on the usecase. Interconnect providers can also be interconnect
+consumers, such as in the case where two network-on-chip fabrics interface
+directly
+
+Required properties:
+- compatible : contains the interconnect provider vendor specific compatible
+ string
+- reg : register space of the interconnect controller hardware
+- #interconnect-cells : number of cells in a interconnect specifier needed to
+ encode the interconnect node id.
+
+Example:
+
+ snoc: snoc@0580000 {
+ compatible = "qcom,msm-bus-snoc";
+ reg = <0x580000 0x14000>;
+ #interconnect-cells = <1>;
+ clock-names = "bus_clk", "bus_a_clk";
+ clocks = <&rpmcc RPM_SMD_SNOC_CLK>, <&rpmcc RPM_SMD_SNOC_A_CLK>;
+ status = "okay";
+ };
+ bimc: bimc@0400000 {
+ compatible = "qcom,msm-bus-bimc";
+ reg = <0x400000 0x62000>;
+ #interconnect-cells = <1>;
+ clock-names = "bus_clk", "bus_a_clk";
+ clocks = <&rpmcc RPM_SMD_BIMC_CLK>, <&rpmcc RPM_SMD_BIMC_A_CLK>;
+ status = "okay";
+ };
+ pnoc: pnoc@500000 {
+ compatible = "qcom,msm-bus-pnoc";
+ reg = <0x500000 0x11000>;
+ #interconnect-cells = <1>;
+ clock-names = "bus_clk", "bus_a_clk";
+ clocks = <&rpmcc RPM_SMD_PCNOC_CLK>, <&rpmcc RPM_SMD_PCNOC_A_CLK>;
+ status = "okay";
+ };
+
+= interconnect consumers =
+
+The interconnect consumers are device nodes which consume the interconnect
+path(s) provided by the interconnect provider. There can be multiple
+interconnect providers on a SoC and the consumer may consume multiple paths
+from different providers depending on usecase and the components it has to
+interact with.
+
+Required-properties:
+interconnect-src : A phandle and interconnect provider specifier as defined by
+ bindings of the interconnect provider specified by phandle.
+ This denotes the source device port which will be used, as the
+ device may have multiple master ports.
+interconnect-dst : A phandle and internet provider specifier pointing to the
+ local port of the target device.
+
+Example:
+
+ sdhci@07864000 {
+ ...
+ interconnect-src = <&pnoc MAS_PNOC_SDCC_2>;
+ interconnect-dst = <&pnoc SLV_BLSP_1>;
+ };
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