[PATCH] dt-bindings: display: imx: Document fsl,pcr

[Fabio Estevam <festevam@gmail.com>]

Some i.MX25 and i.MX27 devicetree display nodes contain fsl,pcr, but
this property is not documented. As a result, dt-core.yaml reports
its raw bytes as an invalid property:

imx27-phytec-phycard-s-rdk.dtb: display: fsl,pcr: b'\xf0\xc8\x80\x80' is
not of type 'object', 'integer', 'array', 'boolean', 'null'

Document fsl,pcr.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
With this change applied, imx_v4_v5_defconfig builds with zero dt-schema
warnings.

 .../devicetree/bindings/display/imx/fsl,imx-lcdc.yaml       | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml
index 84610b5690c4..f1931436a4d8 100644
--- a/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml
@@ -65,6 +65,12 @@ properties:
     description:
       LCDC Sharp Configuration Register value.
 
+  fsl,pcr:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      LCDC Panel Configuration Register value used in the display node
+      referenced by the display property.
+
 allOf:
   - if:
       properties:
-- 
2.43.0