Add node information for ADTRG hardware pin and the three possible
edge nodes that are available for the driver
Signed-off-by: Eugen Hristev <eugen.hristev@xxxxxxxxxxxxx>
---
.../devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
index 3223684..e30ede3 100644
--- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
@@ -11,6 +11,13 @@ Required properties:
- atmel,min-sample-rate-hz: Minimum sampling rate, it depends on SoC.
- atmel,max-sample-rate-hz: Maximum sampling rate, it depends on SoC.
- atmel,startup-time-ms: Startup time expressed in ms, it depends on SoC.
+ - atmel,trigger-edge-type: phandle to one of the adtrg possible edge types
+
+Required adtrg node:
+ - Required edge nodes:
+ For each possible edge type for the ADTRG hardware trigger pin,
+ a specific sub node. The driver recognises only the three possible
+ edge types: external_rising, external_falling, external_any.
Example:
@@ -25,4 +32,14 @@ adc: adc@fc030000 {
atmel,startup-time-ms = <4>;
vddana-supply = <&vdd_3v3_lp_reg>;
vref-supply = <&vdd_3v3_lp_reg>;
+ atmel,trigger-edge-type = <&external_rising>;
+
+ adtrg: adtrg {
+ external_rising: external_rising {
+ };
+ external_falling: external_falling {
+ };
+ external_any: external_any {
+ };
+ };
}
--
2.7.4
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