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 <[email protected]> --- .../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
