From 7cad20e339ea0493fad76db27e4675b2a9629e7c Mon Sep 17 00:00:00 2001
From: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Date: Wed, 18 Mar 2026 08:32:52 +0100
Subject: [PATCH] dt-bindings: ili9806e: add Rocktech RK050HR345-CT106A display

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>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260318073346.18041-4-dario.binacchi@amarulasolutions.com
---
 .../display/panel/ilitek,ili9806e.yaml        | 38 ++++++++++++++++++-
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9806e.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9806e.yaml
index f80307579485..2080d9e0ffac 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:
@@ -30,11 +31,24 @@ 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#
+  required:
+    - spi-max-frequency
+else:
+  required:
+    - vccio-supply
+
 unevaluatedProperties: false
 
 examples:
@@ -60,5 +74,25 @@ examples:
             };
         };
     };
+  - |
+    #include <dt-bindings/gpio/gpio.h>
 
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "rocktech,rk050hr345-ct106a", "ilitek,ili9806e";
+            reg = <0>;
+            vdd-supply = <&reg_vdd_panel>;
+            spi-max-frequency = <10000000>;
+            reset-gpios = <&gpiob 6 GPIO_ACTIVE_LOW>;
+            backlight = <&backlight>;
+            port {
+                panel_in_rgb: endpoint {
+                    remote-endpoint = <&ltdc_out_rgb>;
+                };
+            };
+        };
+    };
 ...