Re: [PATCH v3 1/4] dt-bindings: iio: adc: add bindings for AD4691 family
From: David Lechner <dlechner@baylibre.com>
Date: 2026-03-14 18:18:41
Also in:
linux-gpio, linux-iio, linux-pwm, lkml
On 3/13/26 5:07 AM, Radu Sabau via B4 Relay wrote:
From: Radu Sabau <radu.sabau@analog.com> Add DT bindings for the Analog Devices AD4691 family of multichannel SAR ADCs (AD4691, AD4692, AD4693, AD4694).
...
+ interrupts: + description: + Interrupt line connected to the ADC GP0 pin. GP0 must be physically + wired to an interrupt-capable input on the SoC. The ADC asserts GP0 as + DATA_READY at end of conversion, used both for non-offload CNV Clock Mode + operation and for SPI Engine offload triggering via '#trigger-source-cells'. + Not used in Manual Mode, where CNV is tied to SPI CS and no DATA_READY + signal is generated. + maxItems: 1 +
Some chips have 4 GP pins, so there can be up to 4 interrupts. Also, the DT bindings should not specify which event this is - it is programmable. We should just say which pin is physically wired. So interrupt-names should be "gp0", "gp1", "gp2", "gp3". It will be up to the driver to decide how it wants to use these.