From: Marcus Folkesson Date: Wed, 8 Aug 2018 08:09:16 +0000 (+0200) Subject: dt-bindings: iio: adc: add bindings for mcp3911 X-Git-Tag: v5.15~7699^2~380^2~36 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1c4fbbea34087007b871d444bcbe7c24fad32bd3;p=platform%2Fkernel%2Flinux-starfive.git dt-bindings: iio: adc: add bindings for mcp3911 MCP3911 is a dual channel Analog Front End (AFE) containing two synchronous sampling delta-sigma Analog-to-Digital Converters (ADC). Co-Developed-by: Kent Gustavsson Signed-off-by: Kent Gustavsson Signed-off-by: Marcus Folkesson Reviewed-by: Rob Herring Signed-off-by: Jonathan Cameron --- diff --git a/Documentation/devicetree/bindings/iio/adc/mcp3911.txt b/Documentation/devicetree/bindings/iio/adc/mcp3911.txt new file mode 100644 index 0000000..3071f48 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/mcp3911.txt @@ -0,0 +1,30 @@ +* Microchip MCP3911 Dual channel analog front end (ADC) + +Required properties: + - compatible: Should be "microchip,mcp3911" + - reg: SPI chip select number for the device + +Recommended properties: + - spi-max-frequency: Definition as per + Documentation/devicetree/bindings/spi/spi-bus.txt. + Max frequency for this chip is 20MHz. + +Optional properties: + - clocks: Phandle and clock identifier for sampling clock + - interrupt-parent: Phandle to the parent interrupt controller + - interrupts: IRQ line for the ADC + - microchip,device-addr: Device address when multiple MCP3911 chips are present on the + same SPI bus. Valid values are 0-3. Defaults to 0. + - vref-supply: Phandle to the external reference voltage supply. + +Example: +adc@0 { + compatible = "microchip,mcp3911"; + reg = <0>; + interrupt-parent = <&gpio5>; + interrupts = <15 IRQ_TYPE_EDGE_RISING>; + spi-max-frequency = <20000000>; + microchip,device-addr = <0>; + vref-supply = <&vref_reg>; + clocks = <&xtal>; +};