dt-bindings: clock: add DT binding for the Xtal clock on Armada 3700
authorGregory CLEMENT <gregory.clement@free-electrons.com>
Tue, 19 Jul 2016 13:42:17 +0000 (15:42 +0200)
committerStephen Boyd <sboyd@codeaurora.org>
Mon, 15 Aug 2016 21:06:41 +0000 (14:06 -0700)
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@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt [new file with mode: 0644]

diff --git a/Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt b/Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt
new file mode 100644 (file)
index 0000000..a88f1f0
--- /dev/null
@@ -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@13800 {
+       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>;
+       };
+};