From c77de0b092b7421dd5b9f9ef87f3ef08b8c8f59d Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Thu, 7 May 2020 14:34:56 -0700 Subject: [PATCH] dt-bindings: display: Add hpd-gpios to panel-common bindings In the cases where there is no connector in a system there's no great place to put "hpd-gpios". As per discussion [1] the best place to put it is in the panel. Add this to the device tree bindings. [1] https://lore.kernel.org/r/20200417180819.GE5861@pendragon.ideasonboard.com Signed-off-by: Douglas Anderson Reviewed-by: Stephen Boyd Reviewed-by: Linus Walleij Reviewed-by: Laurent Pinchart Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20200507143354.v5.2.I1976736b400a3b30e46efa47782248b86b3bc627@changeid --- .../devicetree/bindings/display/panel/panel-common.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.yaml b/Documentation/devicetree/bindings/display/panel/panel-common.yaml index 17b8367f12dd9..a747b755ad060 100644 --- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml +++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml @@ -96,6 +96,12 @@ properties: (hot plug detect) signal, but the signal isn't hooked up so we should hardcode the max delay from the panel spec when powering up the panel. + hpd-gpios: + maxItems: 1 + description: + If Hot Plug Detect (HPD) is connected to a GPIO in the system rather + than a dedicated HPD pin the pin can be specified here. + # Control I/Os # Many display panels can be controlled through pins driven by GPIOs. The nature -- 2.39.5