[PATCH 4/4] clk: dts: document pxa27x clock binding
From: Robert Jarzmik <hidden>
Date: 2014-06-29 18:32:24
Also in:
linux-arm-kernel
Subsystem:
common clk framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Stephen Boyd, Brian Masney, Jerome Brunet, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- .../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
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2.0.0.rc2
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