[PATCH 1/8] dt-bindings: display: panel: novatek,nt36672e: Document the reset GPIO polarity

[Vladimir Zapolskiy <vz@kernel.org>]

The reset GPIO of NT36672E panels has been described as active high since
the binding was added, also see the example and the QCM6490 IDP board
device tree, however actually it serves as the active low signal, also
panel-common.yaml expects active low reset GPIOs to be described as such.

Document the active high description of the reset GPIO explicitly as
the exceptional deviation from the actual signal polarity, any new devices
will use it in the same way as the existing ones.

Signed-off-by: Vladimir Zapolskiy <vz@kernel.org>
---
 .../bindings/display/panel/novatek,nt36672e.yaml         | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/panel/novatek,nt36672e.yaml b/Documentation/devicetree/bindings/display/panel/novatek,nt36672e.yaml
index dc4672f3d01d..45743376995b 100644
--- a/Documentation/devicetree/bindings/display/panel/novatek,nt36672e.yaml
+++ b/Documentation/devicetree/bindings/display/panel/novatek,nt36672e.yaml
@@ -24,7 +24,14 @@ properties:
   avdd-supply: true
   avee-supply: true
   port: true
-  reset-gpios: true
+  reset-gpios:
+    maxItems: 1
+    description:
+      GPIO connected to the reset pin of the panel. The GPIO must be described
+      as active high (GPIO_ACTIVE_HIGH), the asserted state releases the panel
+      from reset. Note that the RESET_N pin is in fact an active low signal,
+      the inverted description is kept for compatibility with existing device
+      trees, while it deviates from the convention of panel-common.yaml.
   backlight: true
 
 required:
-- 
2.51.0