linux-kernel - [PATCH v3 1/6] dt-bindings: clock: add DT binding for the Xtal clock on Armada 3700

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Message-Id: <1468935742-11218-2-git-send-email-gregory.clement@free-electrons.com>
Date:	Tue, 19 Jul 2016 15:42:17 +0200
From:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:	Mike Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org,
	Nadav Haklai <nadavh@...vell.com>,
	Victor Gu <xigu@...vell.com>,
	Romain Perier <romain.perier@...e-electrons.com>,
	Omri Itach <omrii@...vell.com>,
	Marcin Wojtas <mw@...ihalf.com>,
	Wilson Ding <dingwei@...vell.com>,
	Hua Jing <jinghua@...vell.com>, Terry Zhou <bjzhou@...vell.com>
Subject: [PATCH v3 1/6] dt-bindings: clock: add DT binding for the Xtal clock on Armada 3700

This commit adds the DT binding documentation for the the Xtal clock on
Armada 3700 used in the Marvell Armada 3700 SoCs.

Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
Acked-by: Rob Herring <robh@...nel.org>
---
 .../bindings/clock/armada3700-xtal-clock.txt       | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt

diff --git a/Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt b/Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt
new file mode 100644
index 000000000000..a88f1f05fbd6
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt
@@ -0,0 +1,28 @@
+* Xtal Clock bindings for Marvell Armada 37xx SoCs
+
+Marvell Armada 37xx SoCs allow to determine the xtal clock frequencies by
+reading the gpio latch register.
+
+This node must be a subnode of the node exposing the register address
+of the GPIO block where the gpio latch is located.
+
+Required properties:
+- compatible : shall be one of the following:
+	"marvell,armada-3700-xtal-clock"
+- #clock-cells : from common clock binding; shall be set to 0
+
+Optional properties:
+- clock-output-names : from common clock binding; allows overwrite default clock
+	output names ("xtal")
+
+Example:
+gpio1: gpio@...00 {
+	compatible = "marvell,armada-3700-gpio", "syscon", "simple-mfd";
+	reg = <0x13800 0x1000>;
+
+	xtalclk: xtal-clk {
+		compatible = "marvell,armada-3700-xtal-clock";
+		clock-output-names = "xtal";
+		#clock-cells = <0>;
+	};
+};
-- 
2.5.0