board: rockchip: Add support for Powkiddy RGB10MAX3

Add support to the RGxx3 device for the Powkiddy RGB10MAX3. This device
is extremely similar to all the other devices and can use the same
bootloader with the same detection logic.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/rk3566-anbernic-rgxx3.dts b/arch/arm/dts/rk3566-anbernic-rgxx3.dts
index 9e0aa9e..c393c8d 100644
--- a/arch/arm/dts/rk3566-anbernic-rgxx3.dts
+++ b/arch/arm/dts/rk3566-anbernic-rgxx3.dts
@@ -12,9 +12,12 @@
  * set the correct dtb name for loading mainline Linux automatically.
  */
 	model = "RGXX3";
-	compatible = "anbernic,rg353m", "anbernic,rg353p",
-		     "anbernic,rg353v", "anbernic,rg353vs",
-		     "anbernic,rg503", "rockchip,rk3566";
+	compatible = "anbernic,rg-arc-d", "anbernic,rg-arc-s",
+		     "anbernic,rg353m", "anbernic,rg353p",
+		     "anbernic,rg353ps", "anbernic,rg353v",
+		     "anbernic,rg353vs", "anbernic,rg503",
+		     "powkiddy,rgb10max3", "powkiddy,rgb30",
+		     "powkiddy,rk2023", "rockchip,rk3566";
 };
 
 &cru {
diff --git a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
index d05502f..5c57b90 100644
--- a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
+++ b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
@@ -50,6 +50,7 @@
 	RGB30,
 	RK2023,
 	RGARCD,
+	RGB10MAX3,
 	/* Devices with duplicate ADC value */
 	RG353PS,
 	RG353VS,
@@ -107,6 +108,13 @@
 		.fdtfile = DTB_DIR "rk3566-anbernic-rg-arc-d.dtb",
 		.detect_panel = 0,
 	},
+	[RGB10MAX3] = {
+		.adc_value = 765, /* Observed average from device */
+		.board = "rk3566-powkiddy-rgb10max3",
+		.board_name = "Powkiddy RGB10MAX3",
+		.fdtfile = DTB_DIR "rk3566-powkiddy-rgb10max3.dtb",
+		.detect_panel = 0,
+	},
 	/* Devices with duplicate ADC value */
 	[RG353PS] = {
 		.adc_value = 860, /* Observed average from device */
diff --git a/doc/board/anbernic/rgxx3.rst b/doc/board/anbernic/rgxx3.rst
index d159ed2..1e63e69 100644
--- a/doc/board/anbernic/rgxx3.rst
+++ b/doc/board/anbernic/rgxx3.rst
@@ -17,6 +17,7 @@
 Additionally, the following very similar non-Anbernic devices are also
 supported:
 
+ - Powkiddy RGB10MAX3
  - Powkiddy RGB30
  - Powkiddy RK2023