dt-bindings: display: convert sitronix,st7586 to YAML

Convert the sitronix,st7586 binding documentation from .txt to .yaml.

Also added a link to the datasheet while we are touching this.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20250530-devicetree-convert-sitronix-st7586-to-yaml-v1-1-c132b512ec57@baylibre.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Author: dlech

Documentation/devicetree/bindings/display/sitronix,st7586.txt

@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sitronix,st7586.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sitronix ST7586 Display Controller
+
+maintainers:
+  - David Lechner <david@lechnology.com>
+
+description:
+  Sitronix ST7586 is a driver and controller for 4-level gray
+  scale and monochrome dot matrix LCD panels.
+  https://topwaydisplay.com/sites/default/files/2020-04/ST7586S.pdf
+
+$ref: panel/panel-common.yaml#
+
+additionalProperties: false
+
+properties:
+  compatible:
+    const: lego,ev3-lcd
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 50000000
+
+  a0-gpios:
+    description:
+      The A0 signal (for serial mode, this is the pin labeled D1 on the
+      controller, not the pin labeled A0)
+    maxItems: 1
+
+  reset-gpios: true
+  rotation: true
+
+required:
+  - compatible
+  - reg
+  - a0-gpios
+  - reset-gpios
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        display@0 {
+            compatible = "lego,ev3-lcd";
+            reg = <0>;
+            spi-max-frequency = <10000000>;
+            a0-gpios = <&gpio 43 GPIO_ACTIVE_HIGH>;
+            reset-gpios = <&gpio 80 GPIO_ACTIVE_HIGH>;
+        };
+    };

Documentation/devicetree/bindings/display/sitronix,st7586.yaml

@@ -7825,7 +7825,7 @@ DRM DRIVER FOR SITRONIX ST7586 PANELS
 M:	David Lechner <david@lechnology.com>
 S:	Maintained
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
-F:	Documentation/devicetree/bindings/display/sitronix,st7586.txt
+F:	Documentation/devicetree/bindings/display/sitronix,st7586.yaml
 F:	drivers/gpu/drm/sitronix/st7586.c
 
 DRM DRIVER FOR SITRONIX ST7571 PANELS