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From: Adam Michaelis <adam.michaelis@rockwellcollins.com>
To: linux-iio@vger.kernel.org
Cc: lars@metafoo.de, michael.hennerich@analog.com, jic23@kernel.org,
	knaack.h@gmx.de, pmeerw@pmeerw.net, robh+dt@kernel.org,
	mark.rutland@arm.com, charles-antoine.couret@essensium.com,
	devicetree@vger.kernel.org, brandon.maier@rockwellcollins.com,
	clayton.shotwell@rockwellcollins.com,
	Adam Michaelis <adam.michaelis@rockwellcollins.com>
Subject: [PATCH 4/6] dt-bindings: iio: ad7949: Add cfg-readback option
Date: Wed,  1 May 2019 16:17:01 -0500
Message-ID: <1556745423-11368-4-git-send-email-adam.michaelis@rockwellcollins.com> (raw)
In-Reply-To: <1556745423-11368-1-git-send-email-adam.michaelis@rockwellcollins.com>

Adding optional parameter to the ad7949 to indicate that the part should
be configured to include the configuration register value used when
acquiring the current sample value.

Signed-off-by: Adam Michaelis <adam.michaelis@rockwellcollins.com>
---
 Documentation/devicetree/bindings/iio/adc/ad7949.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/ad7949.txt b/Documentation/devicetree/bindings/iio/adc/ad7949.txt
index 14ee9a2cb2a5..cd3572828243 100644
--- a/Documentation/devicetree/bindings/iio/adc/ad7949.txt
+++ b/Documentation/devicetree/bindings/iio/adc/ad7949.txt
@@ -18,6 +18,8 @@ Optional properties:
    7: External reference, temperature sensor disabled, buffer enabled
  - vref-supply: The regulator supply for ADC reference voltage. Required
  if external reference selected by 'adi,reference-select'.
+ - adi,cfg-readback: If defined, set bit in configuration register to
+ read-back the configuration used for the current sample value.
 
 Examples:
 adc@0 {
@@ -32,3 +34,10 @@ adc@0 {
 	reg = <0>;
 	adi,reference-select = <0>;
 };
+
+adc@0 {
+	compatible = "adi,ad7949";
+	reg = <0>;
+	adi,reference-select = <1>;
+	adi,cfg-readback;
+};
-- 
1.9.1


  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-01 21:16 [PATCH 1/6] iio: ad7949: Support internal Vref Adam Michaelis
2019-05-01 21:16 ` [PATCH 2/6] dt-bindings: iio: ad7949: Add adi,reference-select Adam Michaelis
2019-05-05 12:22   ` Jonathan Cameron
2019-05-06 19:28     ` Adam Michaelis
2019-05-07 18:21     ` Adam Michaelis
2019-05-11 10:38       ` Jonathan Cameron
2019-05-13 14:51         ` [External] " Adam Michaelis
2019-05-01 21:17 ` [PATCH 3/6] iio: ad7949: Support configuration read-back Adam Michaelis
2019-05-01 21:17 ` Adam Michaelis [this message]
2019-05-01 21:17 ` [PATCH 5/6] iio: ad7949: Fix SPI interfacing for 14-bit messages Adam Michaelis
2019-05-01 21:17 ` [PATCH 6/6] iio: ad7949: Fix dummy read cycle placement Adam Michaelis
2019-05-02  6:30 ` [PATCH 1/6] iio: ad7949: Support internal Vref Couret Charles-Antoine

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