On Mittwoch, 5. April 2023 16:10:10 CEST Krzysztof Kozlowski wrote: > On 05/04/2023 16:01, Nicolas Frattaroli wrote: > > The MCP4801, MCP4802, MCP4811, MCP4812, MCP4821, and MCP4822 are > > SPI digital-to-analog converters by Microchip, which have an > > internal voltage reference, in contrast to the MCP49xx series > > of DACs which use an external voltage reference. > > > > Thus, these need a separate binding, as to not overcomplicate > > the mcp4922 binding. > > The difference is just one property which is very easy to handle - one > allOf:if:then: with > vref-supply: false > > Are there any other differences? > > Best regards, > Krzysztof > > In place of the external vref input, the MCP48XX series chips also have a "SHDN" input, which is an active-low pin to disable the whole chip and put it in a low power state. Future users of the bindings may want to model this as being tied to some GPIO, though I haven't done it here since I don't care about this feature. Kind regards, Nicolas Frattaroli
