dt-bindings: display: panel: Add bindings for NEC NL8048HL11 panel

The NEC NL8048HL11 is a 10.4cm WVGA (800x480) panel with a 24-bit RGB
parallel data interface and an SPI control interface.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-4-laurent.pinchart@ideasonboard.com

diff --git a/Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml b/Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml
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+++ b/Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/nec,nl8048hl11.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NEC NL8048HL11 4.1" WVGA TFT LCD panel
+
+description:
+  The NEC NL8048HL11 is a 4.1" WVGA TFT LCD panel with a 24-bit RGB parallel
+  data interface and an SPI control interface.
+
+maintainers:
+  - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: nec,nl8048hl11
+
+  label: true
+  port: true
+  reg: true
+  reset-gpios: true
+
+  spi-max-frequency:
+    maximum: 10000000
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi0 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      lcd_panel: panel@0 {
+        compatible = "nec,nl8048hl11";
+        reg = <0>;
+        spi-max-frequency = <10000000>;
+
+        reset-gpios = <&gpio7 7 GPIO_ACTIVE_LOW>;
+
+        port {
+          lcd_in: endpoint {
+            remote-endpoint = <&dpi_out>;
+          };
+        };
+      };
+    };
+
+...