media: ad5820: DT new optional field enable-gpios

Document new enable-gpio field. It can be used to disable the part without turning down its regulator. Cc: [email protected] Signed-off-by: Ricardo Ribalda Delgado <[email protected]> Acked-by: Pavel Machek <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Rob Herring <[email protected]> Signed-off-by: Sakari Ailus <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
wangyan0507 · Oct 24, 2019 · 219ea61 · 219ea61
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commit 219ea61
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diff --git a/Documentation/devicetree/bindings/media/i2c/ad5820.txt b/Documentation/devicetree/bindings/media/i2c/ad5820.txt
@@ -8,12 +8,18 @@ Required Properties:
 
   - VANA-supply: supply of voltage for VANA pin
 
+Optional properties:
+
+   - enable-gpios : GPIO spec for the XSHUTDOWN pin. The XSHUTDOWN signal is
+active low, a high level on the pin enables the device.
+
 Example:
 
        ad5820: coil@c {
                compatible = "adi,ad5820";
                reg = <0x0c>;
 
                VANA-supply = <&vaux4>;
+               enable-gpios = <&msmgpio 26 GPIO_ACTIVE_HIGH>;
        };