Add a pwms property to the adi,ad4695 binding to specify an optional PWM output connected to the CNV pin on the ADC. Also add #trigger-source-cells property to allow the BUSY output to be used as a SPI offload trigger source to indicate when a sample is ready to be read. Macros are added to adi,ad4695.h for the cell values to help with readability since they are arbitrary values. The $ref for spi-peripheral-props.yaml is moved to keep similar $refs grouped together. Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx> --- v5 changes: * Added macros for cell values v4 changes: new patch in v4 --- .../devicetree/bindings/iio/adc/adi,ad4695.yaml | 16 ++++++++++++++-- include/dt-bindings/iio/adc/adi,ad4695.h | 7 +++++++ 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml index 7d2229dee444..c0d4e4ff62a4 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml @@ -18,8 +18,6 @@ description: | * https://www.analog.com/en/products/ad4697.html * https://www.analog.com/en/products/ad4698.html -$ref: /schemas/spi/spi-peripheral-props.yaml# - properties: compatible: enum: @@ -84,6 +82,9 @@ properties: description: The Reset Input (RESET). Should be configured GPIO_ACTIVE_LOW. maxItems: 1 + pwms: + description: PWM signal connected to the CNV pin. + interrupts: minItems: 1 items: @@ -106,6 +107,15 @@ properties: The first cell is the GPn number: 0 to 3. The second cell takes standard GPIO flags. + '#trigger-source-cells': + description: | + First cell indicates the output signal: 0 = BUSY, 1 = ALERT. + Second cell indicates which GPn pin is used: 0, 2 or 3. + + For convenience, macros for these values are available in + dt-bindings/iio/adc/adi,ad4695.h. + const: 2 + "#address-cells": const: 1 @@ -166,6 +176,8 @@ required: - vio-supply allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + - $ref: /schemas/spi/trigger-source.yaml# - oneOf: - required: - ldo-in-supply diff --git a/include/dt-bindings/iio/adc/adi,ad4695.h b/include/dt-bindings/iio/adc/adi,ad4695.h index 9fbef542bf67..fea4525d2710 100644 --- a/include/dt-bindings/iio/adc/adi,ad4695.h +++ b/include/dt-bindings/iio/adc/adi,ad4695.h @@ -6,4 +6,11 @@ #define AD4695_COMMON_MODE_REFGND 0xFF #define AD4695_COMMON_MODE_COM 0xFE +#define AD4695_TRIGGER_EVENT_BUSY 0 +#define AD4695_TRIGGER_EVENT_ALERT 1 + +#define AD4695_TRIGGER_PIN_GP0 0 +#define AD4695_TRIGGER_PIN_GP2 2 +#define AD4695_TRIGGER_PIN_GP3 3 + #endif /* _DT_BINDINGS_ADI_AD4695_H */ -- 2.43.0
