Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / clock / moxa,moxart-clock.txt

diff --git a/kernel/Documentation/devicetree/bindings/clock/moxa,moxart-clock.txt b/kernel/Documentation/devicetree/bindings/clock/moxa,moxart-clock.txt
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+Device Tree Clock bindings for arch-moxart
+
+This binding uses the common clock binding[1].
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+MOXA ART SoCs allow to determine PLL output and APB frequencies
+by reading registers holding multiplier and divisor information.
+
+
+PLL:
+
+Required properties:
+- compatible : Must be "moxa,moxart-pll-clock"
+- #clock-cells : Should be 0
+- reg : Should contain registers location and length
+- clocks : Should contain phandle + clock-specifier for the parent clock
+
+Optional properties:
+- clock-output-names : Should contain clock name
+
+
+APB:
+
+Required properties:
+- compatible : Must be "moxa,moxart-apb-clock"
+- #clock-cells : Should be 0
+- reg : Should contain registers location and length
+- clocks : Should contain phandle + clock-specifier for the parent clock
+
+Optional properties:
+- clock-output-names : Should contain clock name
+
+
+For example:
+
+       clk_pll: clk_pll@98100000 {
+               compatible = "moxa,moxart-pll-clock";
+               #clock-cells = <0>;
+               reg = <0x98100000 0x34>;
+       };
+
+       clk_apb: clk_apb@98100000 {
+               compatible = "moxa,moxart-apb-clock";
+               #clock-cells = <0>;
+               reg = <0x98100000 0x34>;
+               clocks = <&clk_pll>;
+       };