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authorArtur Rojek <contact@artur-rojek.eu>2019-02-04 01:15:12 +0100
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2019-02-09 15:37:42 +0000
commit86117ba3f9b37de5e9a6adcdae14556f63661d04 (patch)
tree66fdb40423453f3a2767742684436057c58c6049 /Documentation/devicetree/bindings/iio
parent94edaac707e2882513b8b8b83482e4cba77863e7 (diff)
dt-bindings: iio/adc: Add docs for Ingenic JZ47xx SoCs ADC.
Add documentation for the ADC controller on JZ47xx SoCs, used by the ingenic-adc driver. Signed-off-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation/devicetree/bindings/iio')
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diff --git a/Documentation/devicetree/bindings/iio/adc/ingenic,adc.txt b/Documentation/devicetree/bindings/iio/adc/ingenic,adc.txt
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+* Ingenic JZ47xx ADC controller IIO bindings
+
+Required properties:
+
+- compatible: Should be one of:
+ * ingenic,jz4725b-adc
+ * ingenic,jz4740-adc
+- reg: ADC controller registers location and length.
+- clocks: phandle to the SoC's ADC clock.
+- clock-names: Must be set to "adc".
+- #io-channel-cells: Must be set to <1> to indicate channels are selected
+ by index.
+
+ADC clients must use the format described in iio-bindings.txt, giving
+a phandle and IIO specifier pair ("io-channels") to the ADC controller.
+
+Example:
+
+#include <dt-bindings/iio/adc/ingenic,adc.h>
+
+adc: adc@10070000 {
+ compatible = "ingenic,jz4740-adc";
+ #io-channel-cells = <1>;
+
+ reg = <0x10070000 0x30>;
+
+ clocks = <&cgu JZ4740_CLK_ADC>;
+ clock-names = "adc";
+
+ interrupt-parent = <&intc>;
+ interrupts = <18>;
+};
+
+adc-keys {
+ ...
+ compatible = "adc-keys";
+ io-channels = <&adc INGENIC_ADC_AUX>;
+ io-channel-names = "buttons";
+ ...
+};
+
+battery {
+ ...
+ compatible = "ingenic,jz4740-battery";
+ io-channels = <&adc INGENIC_ADC_BATTERY>;
+ io-channel-names = "battery";
+ ...
+};