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

The supported format (R1) expects the pixels to map against:
    0 => Black
    1 => White

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

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
---
 Documentation/devicetree/bindings/display/sitronix,st7567.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/sitronix,st7567.yaml b/Documentation/devicetree/bindings/display/sitronix,st7567.yaml
index e8a5b8ad18fe01429146b20a0b8237a164a7dd47..2eb6d00b5a25632a1ce121c1b43a92b2a4010fde 100644
--- a/Documentation/devicetree/bindings/display/sitronix,st7567.yaml
+++ b/Documentation/devicetree/bindings/display/sitronix,st7567.yaml
@@ -23,6 +23,11 @@ properties:
   reg:
     maxItems: 1
 
+  sitronix,inverted:
+    type: boolean
+    description:
+      Display pixels are inverted, i.e. 0 is white and 1 is black.
+
   width-mm: true
   height-mm: true
   panel-timing: true

-- 
2.49.0

On Mon, 21 Jul 2025 12:43:33 +0200, Marcus Folkesson wrote:
> Depending on which display that is connected to the controller, an "1"
> means either a black or a white pixel.
> 
> The supported format (R1) expects the pixels to map against:
>     0 => Black
>     1 => White
> 
> If this is not what the display map against, the controller has support
> to invert these values.
> 
> Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
> ---
>  Documentation/devicetree/bindings/display/sitronix,st7567.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>

Marcus Folkesson <marcus.folkesson@gmail.com> writes:

Hello Marcus,

> Depending on which display that is connected to the controller, an "1"
> means either a black or a white pixel.
>
> The supported format (R1) expects the pixels to map against:
>     0 => Black
>     1 => White
>
> If this is not what the display map against, the controller has support
> to invert these values.
>
> Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
> ---

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat