linux-kernel - [PATCH v5 7/8] dt-bindings: Introduce interconnect consumers bindings

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Date:   Wed, 20 Jun 2018 15:11:40 +0300
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     linux-pm@...r.kernel.org, gregkh@...uxfoundation.org
Cc:     rjw@...ysocki.net, robh+dt@...nel.org, mturquette@...libre.com,
        khilman@...libre.com, vincent.guittot@...aro.org,
        skannan@...eaurora.org, bjorn.andersson@...aro.org,
        amit.kucheria@...aro.org, seansw@....qualcomm.com,
        daidavid1@...eaurora.org, evgreen@...omium.org,
        mark.rutland@....com, lorenzo.pieralisi@....com,
        abailon@...libre.com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, georgi.djakov@...aro.org
Subject: [PATCH v5 7/8] dt-bindings: Introduce interconnect consumers bindings

Add documentation for the interconnect consumer bindings, that will allow
to link a device node (consumer) to its interconnect controller hardware.

Tha aim is to enable drivers to request a framework API to configure an
interconnect path by providing their struct device pointer and a name.

Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
---
 .../bindings/interconnect/interconnect.txt    | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/Documentation/devicetree/bindings/interconnect/interconnect.txt b/Documentation/devicetree/bindings/interconnect/interconnect.txt
index 6e2b2971b094..0ad65dccbe8b 100644
--- a/Documentation/devicetree/bindings/interconnect/interconnect.txt
+++ b/Documentation/devicetree/bindings/interconnect/interconnect.txt
@@ -31,3 +31,30 @@ Example:
 			clocks = <&rpmcc RPM_SMD_SNOC_CLK>,
 				 <&rpmcc RPM_SMD_SNOC_A_CLK>;
 		};
+
+
+= 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 use case and the components it has to
+interact with.
+
+Required properties:
+interconnects : Pairs of phandles and interconnect provider specifier to denote
+	        the edge source and destination ports of the interconnect path.
+
+Optional properties:
+interconnect-names : List of interconnect path name strings sorted in the same
+		     order as the interconnects property. Consumers drivers will use
+		     interconnect-names to match interconnect paths with interconnect
+		     specifiers.
+
+Example:
+
+	sdhci@...4000 {
+		...
+		interconnects = <&pnoc MASTER_SDCC_1 &bimc SLAVE_EBI_CH0>;
+		interconnect-names = "ddr";
+	};