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authorAlexander Stein <alexander.stein@ew.tq-group.com>2023-04-24 11:23:12 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2023-05-13 17:54:57 +0100
commit72c1d11074d6160f19760d57fc78b2a7f52bcb1a (patch)
tree37ad6c2e2412ec673afb51cfb9638b1b53a07e2b /Documentation
parent3e27ef0ced49f8ae7883c25fadf76a2086e99025 (diff)
dt-bindings: iio: imx8qxp-adc: add missing vref-supply
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@ew.tq-group.com> Reviewed-by: Haibo Chen <haibo.chen@nxp.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20230424092312.61746-1-alexander.stein@ew.tq-group.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml b/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml
index 63369ba388e4..0a192ca192c5 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 = <&reg_1v8>;
#io-channel-cells = <1>;
};
};