Adds support for MCP48xx series of DACs. Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/22244B.pdf #MCP48x1 Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/20002249B.pdf #MCP48x2 Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> Signed-off-by: Anshul Dalal <anshulusr@xxxxxxxxx> --- Changes for v2: - Changed order in device table to numerical - Made vdd_supply required - Added 'Reviewed-by: Conor Dooley' Previous versions: v1: https://lore.kernel.org/lkml/20231117073040.685860-1-anshulusr@xxxxxxxxx/ --- .../bindings/iio/dac/microchip,mcp4821.yaml | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml diff --git a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml new file mode 100644 index 000000000000..97da9f9ef450 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4821.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip MCP4821 and similar DACs + +description: | + Supports MCP48x1 (single channel) and MCP48x2 (dual channel) series of DACs. + Device supports simplex communication over SPI in Mode 0,1 and Mode 1,1. + + +---------+--------------+-------------+ + | Device | Resolution | Channels | + |---------|--------------|-------------| + | MCP4801 | 8-bit | 1 | + | MCP4802 | 8-bit | 2 | + | MCP4811 | 10-bit | 1 | + | MCP4812 | 10-bit | 2 | + | MCP4821 | 12-bit | 1 | + | MCP4822 | 12-bit | 2 | + +---------+--------------+-------------+ + + Datasheet: + MCP48x1: https://ww1.microchip.com/downloads/en/DeviceDoc/22244B.pdf + MCP48x2: https://ww1.microchip.com/downloads/en/DeviceDoc/20002249B.pdf + +maintainers: + - Anshul Dalal <anshulusr@xxxxxxxxx> + +properties: + compatible: + enum: + - microchip,mcp4801 + - microchip,mcp4802 + - microchip,mcp4811 + - microchip,mcp4812 + - microchip,mcp4821 + - microchip,mcp4822 + + reg: + maxItems: 1 + + vdd-supply: true + +required: + - compatible + - reg + - vdd-supply + +additionalProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + dac@0 { + compatible = "microchip,mcp4821"; + reg = <0>; + vdd-supply = <&vdd_regulator>; + }; + }; -- 2.43.0
