linux-kernel - [PATCH 1/2] dt-bindings: add binding for tft displays based on ilitek,ili9488

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Message-Id: <20221018164532.1705215-2-tommaso.merciai@amarulasolutions.com>
Date:   Tue, 18 Oct 2022 18:45:25 +0200
From:   Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
To:     tommaso.merciai@...rulasolutions.com
Cc:     michael@...rulasolutions.com, linuxfancy@...glegroups.com,
        linux-amarula@...rulasolutions.com, kamlesh.gurudasani@...il.com,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Ripard <maxime@...no.tech>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Noralf Trønnes <noralf@...nnes.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: add binding for tft displays based on ilitek,ili9488

This binding is for the tft displays based on ilitek,ili9488.
waveshare,waveshare,pico-rt-lcd-35 (waveshare pico-restouch-lcd-3.5)

Signed-off-by: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
---
 .../bindings/display/ilitek,ili9488.yaml      | 72 +++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9488.yaml

diff --git a/Documentation/devicetree/bindings/display/ilitek,ili9488.yaml b/Documentation/devicetree/bindings/display/ilitek,ili9488.yaml
new file mode 100644
index 0000000000000..879ecc42c350c
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/ilitek,ili9488.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/ilitek,ili9488.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ilitek ILI9488 display panels device tree bindings
+
+maintainers:
+  - Kamlesh Gurudasani <kamlesh.gurudasani@...il.com>
+  - Michael Trimarchi <michael@...rulasolutions.com>
+  - Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
+
+description:
+  This binding is for display panels using an Ilitek ILI9488 controller in SPI
+  mode.
+
+allOf:
+  - $ref: panel/panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          # Waveshare 3.5" 320x480 Color TFT LCD
+          - "waveshare,pico-rt-lcd-35"
+      - const: ilitek,ili9488
+
+  spi-max-frequency:
+    maximum: 20000000
+
+  dc-gpios:
+    maxItems: 1
+    description: Display data/command selection (D/CX)
+
+  backlight: true
+  reg: true
+  reset-gpios: true
+  rotation: true
+
+required:
+  - compatible
+  - reg
+  - dc-gpios
+  - reset-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    backlight: backlight {
+            compatible = "gpio-backlight";
+            gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
+    };
+    spi {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+
+            display@0{
+                    compatible = "waveshare,pico-rt-lcd-35", "ilitek,ili9488";
+                    reg = <0>;
+                    spi-max-frequency = <20000000>;
+                    dc-gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>;
+                    reset-gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>;
+                    backlight = <&backlight>;
+            };
+    };
+
+...
-- 
2.25.1