[PATCH v3 1/2] dt-bindings: regulator: rpi-panel-v2: Add vcc-supply property

[Shashank Maurya]

Add an optional vcc-supply property to the Raspberry Pi 7" touchscreen
panel V2 regulator binding. The panel controller MCU is powered from an
external power rail, which has to be supplied before any I2C
communication can take place.

The property is optional so that existing device trees which do not
describe the supply remain valid.

Signed-off-by: Shashank Maurya <shashank.maurya at oss.qualcomm.com>
---
 .../regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml b/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml
index 37b9ed371b67..3e2cbcad6490 100644
--- a/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml
+++ b/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml
@@ -35,6 +35,9 @@ properties:
     const: 3
     description: See ../../pwm/pwm.yaml for description of the cell formats.
 
+  vcc-supply:
+    description: Regulator supplying power to the panel controller.
+
 additionalProperties: false
 
 required:
@@ -55,6 +58,7 @@ examples:
         gpio-controller;
         #gpio-cells = <2>;
         #pwm-cells = <3>;
+        vcc-supply = <&vcc_reg>;
       };
     };
 

-- 
2.34.1