@@ -84,6 +84,10 @@ properties:
description: The Reset Input (RESET). Should be configured GPIO_ACTIVE_LOW.
maxItems: 1
+ pwms:
+ description: PWM signal connected to the CNV pin.
+ maxItems: 1
+
interrupts:
minItems: 1
items:
@@ -106,6 +110,15 @@ 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
@@ -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 */
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. Signed-off-by: David Lechner <dlechner@baylibre.com> --- v6 changes: * Drop $ref to trigger-source.yaml * Add maxItems to pwms property v5 changes: * Added macros for cell values v4 changes: new patch in v4 --- Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml | 13 +++++++++++++ include/dt-bindings/iio/adc/adi,ad4695.h | 7 +++++++ 2 files changed, 20 insertions(+)