Document the device-tree binding of Marvell PXA based SoCs.
PXA clocks are mostly fixed rate and fixed ratio clocks derived from an
external oscillator, and gated by a register set (CKEN or CKEN*).
Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
---
.../devicetree/bindings/clock/pxa-clock.txt | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/pxa-clock.txt
diff --git a/Documentation/devicetree/bindings/clock/pxa-clock.txt b/Documentation/devicetree/bindings/clock/pxa-clock.txt
new file mode 100644
index 0000000..beb28ea
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/pxa-clock.txt
@@ -0,0 +1,32 @@
+* Clock bindings for Marvell PXA chips
+
+Required properties:
+- compatible: Should be "marvell,pxa-clocks"
+- reg: Address and length of the CKEN register
+- #clock-cells: Should be <1>
+- clocks: the parent fixed rate clocks
+- clock-indices: the bit index in the CKEN register gating the clock
+- clock-outpout-names: the names of the clocks
+
+The clock consumer should specify the desired clock by having the clock
+ID in its "clocks" phandle cell.
+
+Examples:
+
+pxa2xx_clks: pxa2xx_clks@41300004 {
+ compatible = "marvell,pxa-clocks";
+ clocks = <&clk_14_857mhz>, <&clk_14_857mhz>
+ #clock-cells = <1>;
+ clock-output-names =
+ "pxa27x-ffuart", "pxa27x-btuart";
+ clock-indices = <CKEN_FFUART CKEN_BTUART>
+};
+
+
+* Core clock bindings for Marvell PXA27x chips
+
+Required properties:
+- compatible: Should be "marvell,pxa270-core-clocks"
+- #clock-cells: Should be <1>
+- clocks: the parent fixed rate clock, should be the 13MHz oscillator
+- clock-outpout-names: the names of the 7 core clocks
--
2.0.0.rc2
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