[PATCH v6 2/2] dt-bindings: document Rockchip saradc

[Heiko Stübner]

This add the necessary binding documentation for the saradc found in all recent
processors from Rockchip.

Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
---
changes since v5:
- remove clock-frquency property as described in patch 1/2

 .../bindings/iio/adc/rockchip-saradc.txt           | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
new file mode 100644
index 0000000..5d3ec1d
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
@@ -0,0 +1,24 @@
+Rockchip Successive Approximation Register (SAR) A/D Converter bindings
+
+Required properties:
+- compatible: Should be "rockchip,saradc"
+- reg: physical base address of the controller and length of memory mapped
+       region.
+- interrupts: The interrupt number to the cpu. The interrupt specifier format
+              depends on the interrupt controller.
+- clocks: Must contain an entry for each entry in clock-names.
+- clock-names: Shall be "saradc" for the converter-clock, and "apb_pclk" for
+               the peripheral clock.
+- vref-supply: The regulator supply ADC reference voltage.
+- #io-channel-cells: Should be 1, see ../iio-bindings.txt
+
+Example:
+	saradc: saradc@2006c000 {
+		compatible = "rockchip,saradc";
+		reg = <0x2006c000 0x100>;
+		interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
+		clock-names = "saradc", "apb_pclk";
+		#io-channel-cells = <1>;
+		vref-supply = <&vcc18>;
+	};
-- 
1.9.0


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