linux-kernel - [PATCH v5 2/4] Documentation: dt: iio: at91-sama5d2

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Date:   Thu, 15 Jun 2017 16:24:55 +0300
From:   Eugen Hristev <eugen.hristev@...rochip.com>
To:     <nicolas.ferre@...rochip.com>,
        <alexandre.belloni@...e-electrons.com>,
        <linux-iio@...r.kernel.org>, <lars@...afoo.de>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <ludovic.desroches@...rochip.com>, <jic23@...nel.org>,
        <robh@...nel.org>
CC:     <eugen.hristev@...rochip.com>
Subject: [PATCH v5 2/4] Documentation: dt: iio: at91-sama5d2_adc: add hw trigger edge binding

Add property for the edge type of the hardware trigger pin ADTRG

Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
Acked-by: Rob Herring <robh@...nel.org>
Acked-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
---
  Changes in v4:
 - Modified bindings to be similar with interrupts

 Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 6 ++++++
 1 file changed, 6 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..552e7a8 100644
--- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
@@ -11,6 +11,11 @@ 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: One of possible edge types for the ADTRG hardware
+  trigger pin. When the specific edge type is detected, the conversion will
+  start. Possible values are rising, falling, or both.
+  This property uses the IRQ edge types values: IRQ_TYPE_EDGE_RISING ,
+  IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_BOTH
 
 Example:
 
@@ -25,4 +30,5 @@ adc: adc@...30000 {
 	atmel,startup-time-ms = <4>;
 	vddana-supply = <&vdd_3v3_lp_reg>;
 	vref-supply = <&vdd_3v3_lp_reg>;
+	atmel,trigger-edge-type = <IRQ_TYPE_EDGE_BOTH>;
 }
-- 
2.7.4