[PATCH 2/7] dt-bindings: iio: adc: add nvmem support for vrefint internal channel

[Olivier Moysan]

Add support of nvmem. This allows to retrieve calibration data from OTP
for vrefint internal channel.

Signed-off-by: Olivier Moysan <olivier.moysan at foss.st.com>
---
 .../devicetree/bindings/iio/adc/st,stm32-adc.yaml         | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
index a1f6cbe144ba..772e6cf95dc0 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
@@ -298,6 +298,14 @@ patternProperties:
           each channel.
         $ref: /schemas/types.yaml#/definitions/uint32-array
 
+      nvmem-cells:
+        items:
+          - description: Phandle to the calibration vrefint data provided by otp
+
+      nvmem-cell-names:
+        items:
+          - const: vrefint
+
     patternProperties:
       "^channel@([0-9]|1[0-9])$":
         type: object
-- 
2.17.1