On Thu, Jun 20, 2024 at 10:03:44AM +0200, Olivier MOYSAN wrote: > On 6/18/24 20:10, Conor Dooley wrote: > > On Tue, Jun 18, 2024 at 06:08:30PM +0200, Olivier Moysan wrote: > > > allOf: > > > - if: > > > properties: > > > @@ -199,9 +264,19 @@ patternProperties: > > > description: > > > From common IIO binding. Used to pipe external sigma delta > > > modulator or internal ADC output to DFSDM channel. > > > + deprecated: true > > > - required: > > > - - io-channels > > > + if: > > > + required: > > > + - st,adc-channels > > > + then: > > > + required: > > > + - io-channels > > > + > > > + patternProperties: > > > + "^channel@([0-9]|1[0-9])$": > > > + required: > > > + - io-backends > > > > Why is this here, rather than with reg above? Only some channels require > > a backend? > > The io-backends property is required only when we use st,stm32-dfsdm-adc > compatible. In other words, when we are in an analog use case. In this case > the channel is a consumer of a backend (typically a sd modulator) > In an audio use case (compatible st,stm32-dfsdm-dmic) the backend is not > required. Ahh, I think the hunks and indent confused me here. What you're doing is making io-backends required based on the compatible, but what I thought you were doing was trying to make io-backends required in channels if st,adc-channels was set. Thanks for the explanation, Conor.
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