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dt-bindings: display: sitronix,st7571: add optional inverted property

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Depending on which display that is connected to the controller, an "1"
means either a black or a white pixel.

The supported formats (R1/R2/XRGB8888) expects the pixels
to map against (4bit):
00 => Black
01 => Dark Gray
10 => Light Gray
11 => White

If this is not what the display map against, the controller has support
to invert these values.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250721-st7571-format-v2-2-159f4134098c@gmail.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
This commit is contained in:
Marcus Folkesson
2025-07-21 12:43:32 +02:00
committed by Javier Martinez Canillas
parent c4baa2d987
commit 2596e9414e
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/display/sitronix,st7571.yaml
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@@ -28,6 +28,11 @@ properties:
description:
Display supports 4-level grayscale.
sitronix,inverted:
type: boolean
description:
Display pixels are inverted, i.e. 0 is white and 1 is black.
reset-gpios: true
width-mm: true
height-mm: true