[PATCH v3 2/4] Documentation: dt: iio: at91-sama5d2_adc: add adtrg trigger binding
From: jic23@kernel.org (Jonathan Cameron)
Date: 2017-05-28 15:26:40
Also in:
linux-devicetree, linux-iio, lkml
On Thu, 25 May 2017 14:17:12 +0300 Eugen Hristev [off-list ref] wrote:
Add node information for ADTRG hardware pin and the three possible edge nodes that are available for the driver Signed-off-by: Eugen Hristev <redacted>
Given this is effectively an internal interrupt (i.e. one that software never sees) I wonder if we can borrow some of the form of the binding from there? I'm not really sure it fits though so this is only a passing quick thought! Jonathan
quoted hunk ↗ jump to hunk
--- .../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 at 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 { + }; + }; }