linux-kernel - [RFC 1/7] devicetree: bindings: Document domains controller bindings

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Message-ID: <20190114144202.27315-2-benjamin.gaignard@st.com>
Date:   Mon, 14 Jan 2019 15:41:56 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...com>
To:     <broonie@...nel.org>, <robh@...nel.org>, <arnd@...db.de>
CC:     <linux-kernel@...r.kernel.org>, <loic.pallardy@...com>,
        <benjamin.gaignard@...aro.org>,
        Benjamin Gaignard <benjamin.gaignard@...com>
Subject: [RFC 1/7] devicetree: bindings: Document domains controller bindings

Document commons domains controller bindings for controller
and client devices.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
---
 .../bindings/bus/domains/domainsctrl.txt           | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/bus/domains/domainsctrl.txt

diff --git a/Documentation/devicetree/bindings/bus/domains/domainsctrl.txt b/Documentation/devicetree/bindings/bus/domains/domainsctrl.txt
new file mode 100644
index 000000000000..11dadba4c1fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/bus/domains/domainsctrl.txt
@@ -0,0 +1,35 @@
+Common Domains Controller bindings properties
+
+Domains Controller framework defines common bindings properties to describe
+the configurations to be applied for each device.
+
+Domains Controller bindings:
+- #domainctrl-cells	: provide the number of parameters provided with the
+			  phandle by the client device
+
+Client device node bindings:
+- domainsctrl-names	: list of strings to name the configurations.
+			  "default" and "unbind" are reserved names used by
+			  the framework.
+- domainsctrl-X		: list of configurations to be applied where X is
+			  the index of the configuration within the node.
+
+Example of usage with:
+- a domains controller with a 2 parameters cell
+- a domains controller with a 3 parameters cell
+- a client device node using the both controllers and 2 configurations
+  named "default" and "unbind"
+
+ctrl0: ctrl@0 {
+	#domainctrl-cells = <2>;
+};
+
+ctrl1: ctrl@1 {
+	#domainctrl-cells = <3>;
+};
+
+foo@0 {
+	domains-names = "default", "unbind";
+	domainctrl-0 = <&ctrl0 1 2>, <&ctrl1 3 4 5>;
+	domainctrl-1 = <&ctrl0 6 7>, <&ctrl1 8 9 0>;
+};
-- 
2.15.0