From 86117ba3f9b37de5e9a6adcdae14556f63661d04 Mon Sep 17 00:00:00 2001 From: Artur Rojek Date: Mon, 4 Feb 2019 01:15:12 +0100 Subject: [PATCH] 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 Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/ingenic,adc.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/ingenic,adc.txt diff --git a/Documentation/devicetree/bindings/iio/adc/ingenic,adc.txt b/Documentation/devicetree/bindings/iio/adc/ingenic,adc.txt new file mode 100644 index 0000000..f01159f --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/ingenic,adc.txt @@ -0,0 +1,48 @@ +* 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 + +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"; + ... +}; -- 2.7.4