[PATCH v2 2/4] Documentation: add the binding file for Freescale imx7d ADC driver

[Haibo Chen <haibo.chen@xxxxxxxxxxxxx>]

The patch adds the binding file for Freescale imx7d ADC driver.

Signed-off-by: Haibo Chen <haibo.chen@xxxxxxxxxxxxx>
---
 .../devicetree/bindings/iio/adc/imx7d-adc.txt      | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/imx7d-adc.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/imx7d-adc.txt b/Documentation/devicetree/bindings/iio/adc/imx7d-adc.txt
new file mode 100644
index 0000000..7f4ec1b
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/imx7d-adc.txt
@@ -0,0 +1,26 @@
+Freescale imx7d ADC bindings
+
+The devicetree bindings are for the ADC driver written for
+imx7d SoC.
+
+Required properties:
+- compatible: Should be "fsl,imx7d-adc"
+- reg: Offset and length of the register set for the ADC device
+- interrupts: The interrupt number for the ADC device
+- clocks: The root clock of the ADC controller
+- clock-names: Must contain "adc", matching entry in the clocks property
+- vref-supply: The regulator supply ADC reference voltage
+
+Optional properties:
+- num-channels: the number of channels used
+
+Example:
+adc1: adc@30610000 {
+	compatible = "fsl,imx7d-adc";
+	reg = <0x30610000 0x10000>;
+	interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&clks IMX7D_ADC_ROOT_CLK>;
+	clock-names = "adc";
+	num-channels = <4>;
+	vref-supply = <&reg_vcc_3v3_mcu>;
+};
-- 
1.9.1

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