From 1e1ab0b9f5a34caeed2f8b9cedca811054d746b5 Mon Sep 17 00:00:00 2001 From: Tomer Maimon Date: Wed, 16 Jan 2019 18:48:54 +0200 Subject: [PATCH] dt-binding: iio: add NPCM ADC documentation Added device tree binding documentation for Nuvoton BMC NPCM Analog-to-Digital Converter(ADC). Signed-off-by: Tomer Maimon Reviewed-by: Rob Herring Signed-off-by: Jonathan Cameron --- .../bindings/iio/adc/nuvoton,npcm-adc.txt | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/nuvoton,npcm-adc.txt diff --git a/Documentation/devicetree/bindings/iio/adc/nuvoton,npcm-adc.txt b/Documentation/devicetree/bindings/iio/adc/nuvoton,npcm-adc.txt new file mode 100644 index 000000000000..1b8132cd9060 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/nuvoton,npcm-adc.txt @@ -0,0 +1,35 @@ +Nuvoton NPCM Analog to Digital Converter (ADC) + +The NPCM ADC is a 10-bit converter for eight channel inputs. + +Required properties: +- compatible: "nuvoton,npcm750-adc" for the NPCM7XX BMC. +- reg: specifies physical base address and size of the registers. +- interrupts: Contain the ADC interrupt with flags for falling edge. + +Optional properties: +- clocks: phandle of ADC reference clock, in case the clock is not + added the ADC will use the default ADC sample rate. +- vref-supply: The regulator supply ADC reference voltage, in case the + vref-supply is not added the ADC will use internal voltage + reference. + +Required Node in the NPCM7xx BMC: +An additional register is present in the NPCM7xx SOC which is +assumed to be in the same device tree, with and marked as +compatible with "nuvoton,npcm750-rst". + +Example: + +adc: adc@f000c000 { + compatible = "nuvoton,npcm750-adc"; + reg = <0xf000c000 0x8>; + interrupts = ; + clocks = <&clk NPCM7XX_CLK_ADC>; +}; + +rst: rst@f0801000 { + compatible = "nuvoton,npcm750-rst", "syscon", + "simple-mfd"; + reg = <0xf0801000 0x6C>; +}; -- 2.39.5