From: Liam Beguin <liambeguin@gmail.com>
To: liambeguin@gmail.com, lars@metafoo.de,
Michael.Hennerich@analog.com, jic23@kernel.org,
charles-antoine.couret@essensium.com, Nuno.Sa@analog.com
Cc: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
devicetree@vger.kernel.org, robh+dt@kernel.org
Subject: [PATCH v6 4/5] dt-bindings: iio: adc: ad7949: update voltage reference bindings
Date: Sun, 15 Aug 2021 17:33:08 -0400 [thread overview]
Message-ID: <20210815213309.2847711-5-liambeguin@gmail.com> (raw)
In-Reply-To: <20210815213309.2847711-1-liambeguin@gmail.com>
From: Liam Beguin <lvb@xiphos.com>
Update bindings to describe support for buffered and unbuffered external
voltage references selection, and add adi,internal-ref-microvolt for
internal voltage reference selection.
Signed-off-by: Liam Beguin <lvb@xiphos.com>
---
.../bindings/iio/adc/adi,ad7949.yaml | 51 +++++++++++++++++--
1 file changed, 48 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml
index 9b56bd4d5510..0b10ed5f74ae 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml
@@ -26,19 +26,43 @@ properties:
reg:
maxItems: 1
+ vrefin-supply:
+ description:
+ Buffered ADC reference voltage supply.
+
vref-supply:
description:
- ADC reference voltage supply
+ Unbuffered ADC reference voltage supply.
+
+ adi,internal-ref-microvolt:
+ description: |
+ Internal reference voltage selection in microvolts.
+
+ If no internal reference is specified, the channel will default to the
+ external reference defined by vrefin-supply (or vref-supply).
+ vrefin-supply will take precedence over vref-supply if both are defined.
+
+ If no supplies are defined, the reference selection will default to
+ 4096mV internal reference.
+
+ enum: [2500000, 4096000]
+ default: 4096000
+
spi-max-frequency: true
- "#io-channel-cells":
+ '#io-channel-cells':
const: 1
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
required:
- compatible
- reg
- - vref-supply
additionalProperties: false
@@ -49,9 +73,30 @@ examples:
#size-cells = <0>;
adc@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
compatible = "adi,ad7949";
reg = <0>;
vref-supply = <&vdd_supply>;
};
+
+ adc@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "adi,ad7949";
+ reg = <1>;
+ vrefin-supply = <&vdd_supply>;
+ };
+
+ adc@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "adi,ad7949";
+ reg = <2>;
+ adi,internal-ref-microvolt = <4096000>;
+ };
};
...
--
2.32.0.452.g940fe202adcb
next prev parent reply other threads:[~2021-08-15 21:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-15 21:33 [PATCH v6 0/5] AD7949 Fixes Liam Beguin
2021-08-15 21:33 ` [PATCH v6 1/5] iio: adc: ad7949: define and use bitfield names Liam Beguin
2021-08-15 21:33 ` [PATCH v6 2/5] iio: adc: ad7949: fix spi messages on non 14-bit controllers Liam Beguin
2021-08-29 14:33 ` Jonathan Cameron
2021-08-29 16:43 ` Liam Beguin
2021-08-15 21:33 ` [PATCH v6 3/5] iio: adc: ad7949: add vref selection support Liam Beguin
2021-08-16 8:04 ` Andy Shevchenko
2021-08-16 12:39 ` Liam Beguin
2021-08-16 12:48 ` Andy Shevchenko
2021-08-16 13:07 ` Liam Beguin
2021-08-16 13:12 ` Andy Shevchenko
2021-08-29 14:35 ` Jonathan Cameron
2021-08-29 16:40 ` Liam Beguin
2021-08-15 21:33 ` Liam Beguin [this message]
2021-08-17 22:16 ` [PATCH v6 4/5] dt-bindings: iio: adc: ad7949: update voltage reference bindings Rob Herring
2021-08-15 21:33 ` [PATCH v6 5/5] iio: adc: ad7949: use devm managed functions Liam Beguin
2021-08-16 8:08 ` [PATCH v6 0/5] AD7949 Fixes Andy Shevchenko
2021-08-16 12:59 ` Liam Beguin
2021-08-29 14:38 ` Jonathan Cameron
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