[PATCH v2 1/1] dt-bindings: iio: imx8qxp-adc: add missing vref-supply
Alexander Stein
alexander.stein at ew.tq-group.com
Mon Apr 24 02:23:12 PDT 2023
Although this property is used right now for IIO_CHAN_INFO_SCALE,
this ADC has two internal reference voltages, which the driver currently
doesn't make use of.
Fixes: db73419d8c06 ("dt-bindings: iio: adc: Add binding documentation for NXP IMX8QXP ADC")
Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>
---
Thanks for your inputs. This improved descritpion should make it clear
that this property is only about the external reference voltage, not
about the optional, internal voltages.
Changes in v2:
* Improved commit message subject as suggested
* Add hint about feature flag regarding multiple, internal, reference
voltages
.../devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml b/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml
index 63369ba388e4..878e67054d7c 100644
--- a/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml
@@ -39,6 +39,12 @@ properties:
power-domains:
maxItems: 1
+ vref-supply:
+ description: |
+ External ADC reference voltage supply on VREFH pad. If VERID[MVI] is
+ set, there are additional, internal reference voltages selectable.
+ VREFH1 is always from VREFH pad.
+
"#io-channel-cells":
const: 1
@@ -72,6 +78,7 @@ examples:
assigned-clocks = <&clk IMX_SC_R_ADC_0>;
assigned-clock-rates = <24000000>;
power-domains = <&pd IMX_SC_R_ADC_0>;
+ vref-supply = <®_1v8>;
#io-channel-cells = <1>;
};
};
--
2.34.1
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