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[[PATCH,v3] 2/6] [media] ad5820: DT new optional field enable-gpios

Message ID 20180920204540.28832-2-ricardo.ribalda@gmail.com
State Superseded, archived
Headers show
Series [[PATCH,v3] 2/6] [media] ad5820: DT new optional field enable-gpios | expand

Commit Message

Ricardo Ribalda Delgado Sept. 20, 2018, 8:45 p.m. UTC 
Document new enable-gpio field. It can be used to disable the part
without turning down its regulator.

Cc: devicetree@vger.kernel.org
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
---
 Documentation/devicetree/bindings/media/i2c/ad5820.txt | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/media/i2c/ad5820.txt b/Documentation/devicetree/bindings/media/i2c/ad5820.txt
index 5940ca11c021..9ccd96d3d5f0 100644
--- a/Documentation/devicetree/bindings/media/i2c/ad5820.txt
+++ b/Documentation/devicetree/bindings/media/i2c/ad5820.txt
@@ -8,6 +8,12 @@  Required Properties:
 
   - VANA-supply: supply of voltage for VANA pin
 
+Optional properties:
+
+   - enable-gpios : GPIO spec for the XSHUTDOWN pin. Note that the polarity of
+the enable GPIO is the opposite of the XSHUTDOWN pin (asserting the enable
+GPIO deasserts the XSHUTDOWN signal and vice versa).
+
 Example:
 
        ad5820: coil@c {
@@ -15,5 +21,6 @@  Example:
                reg = <0x0c>;
 
                VANA-supply = <&vaux4>;
+               enable-gpios = <&msmgpio 26 GPIO_ACTIVE_HIGH>;
        };