Document the Rocktech 5" 480x854 panel based on the Ilitek ILI9806E
controller.

This panel uses SPI for control and an RGB interface for display
data, so adjust the binding requirements accordingly.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 .../display/panel/ilitek,ili9806e.yaml        | 43 +++++++++++++++++--
 1 file changed, 40 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9806e.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9806e.yaml
index f80307579485..61d035419126 100644
--- a/Documentation/devicetree/bindings/display/panel/ilitek,ili9806e.yaml
+++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9806e.yaml
@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/display/panel/ilitek,ili9806e.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Ilitek ILI9806E based MIPI-DSI panels
+title: Ilitek ILI9806E based panels
 
 maintainers:
   - Michael Walle <mwalle@kernel.org>
@@ -18,6 +18,7 @@ properties:
       - enum:
           - densitron,dmt028vghmcmi-1d
           - ortustech,com35h3p70ulc
+          - rocktech,rk050hr345-ct106a
       - const: ilitek,ili9806e
 
   reg:
@@ -29,12 +30,29 @@ properties:
 required:
   - compatible
   - reg
-  - vdd-supply
-  - vccio-supply
   - reset-gpios
   - backlight
   - port
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - rocktech,rk050hr345-ct106a
+then:
+  $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+  properties:
+    spi-max-frequency: true
+
+  required:
+    - spi-max-frequency
+else:
+  required:
+    - vdd-supply
+    - vccio-supply
+
 unevaluatedProperties: false
 
 examples:
@@ -60,5 +78,24 @@ examples:
             };
         };
     };
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
 
+        panel@0 {
+            compatible = "rocktech,rk050hr345-ct106a", "ilitek,ili9806e";
+            reg = <0>;
+            spi-max-frequency = <10000000>;
+            reset-gpios = <&gpiob 6 GPIO_ACTIVE_LOW>;
+            backlight = <&backlight>;
+            port {
+                panel_in_rgb: endpoint {
+                    remote-endpoint = <&ltdc_out_rgb>;
+                };
+            };
+        };
+    };
 ...
-- 
2.43.0

On Tue, Jan 06, 2026 at 04:43:15PM +0100, Dario Binacchi wrote:
> @@ -29,12 +30,29 @@ properties:
>  required:
>    - compatible
>    - reg
> -  - vdd-supply
> -  - vccio-supply
>    - reset-gpios
>    - backlight
>    - port
>  
> +if:
> +  properties:
> +    compatible:
> +      contains:
> +        enum:
> +          - rocktech,rk050hr345-ct106a
> +then:
> +  $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +  properties:
> +    spi-max-frequency: true

This two lines are not needed.

> +
> +  required:
> +    - spi-max-frequency

How does it work without any supplies?

> +else:
> +  required:
> +    - vdd-supply
> +    - vccio-supply

Best regards,
Krzysztof