[PATCH v1 1/3] dt-bindings: display: st7701: Add Anbernic RG28XX panel

From: Hironori KIKUCHI
Date: Tue Jun 18 2024 - 06:30:32 EST


The RG28XX panel is a panel specific to the Anbernic RG28XX.
It is 2.8 inches in size (diagonally) with a resolution of 480x640.

Signed-off-by: Hironori KIKUCHI <kikuchan98@xxxxxxxxx>
---
.../display/panel/sitronix,st7701.yaml | 36 +++++++++++++++++--
1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml b/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
index b348f5bf0a9..04f6751ccca 100644
--- a/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
+++ b/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
@@ -22,19 +22,21 @@ description: |

allOf:
- $ref: panel-common.yaml#
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#

properties:
compatible:
items:
- enum:
- anbernic,rg-arc-panel
+ - anbernic,rg28xx-panel
- densitron,dmt028vghmcmi-1a
- elida,kd50t048a
- techstar,ts8550b
- const: sitronix,st7701

reg:
- description: DSI virtual channel used by that screen
+ description: DSI / SPI channel used by that screen
maxItems: 1

VCC-supply:
@@ -43,6 +45,13 @@ properties:
IOVCC-supply:
description: I/O system regulator

+ dc-gpios:
+ maxItems: 1
+ description: |
+ Controller data/command selection (D/CX) in 4-line SPI mode.
+ If not set, the controller is in 3-line SPI mode.
+ No effect for DSI.
+
port: true
reset-gpios: true
rotation: true
@@ -57,7 +66,7 @@ required:
- port
- reset-gpios

-additionalProperties: false
+unevaluatedProperties: false

examples:
- |
@@ -82,3 +91,26 @@ examples:
};
};
};
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ panel@0 {
+ compatible = "anbernic,rg28xx-panel", "sitronix,st7701";
+ reg = <0>;
+ spi-max-frequency = <3125000>;
+ VCC-supply = <&reg_lcd>;
+ IOVCC-supply = <&reg_lcd>;
+ reset-gpios = <&pio 8 14 GPIO_ACTIVE_HIGH>; /* LCD-RST: PI14 */
+ backlight = <&backlight>;
+
+ port {
+ panel_in_rgb: endpoint {
+ remote-endpoint = <&tcon_lcd0_out_lcd>;
+ };
+ };
+ };
+ };
--
2.45.2