arm64: dts: rockchip: Add support for Hugsun X99 TV Box

Add devicetree support for Hugsun X99 TV Box based on RK3399 SoC

Tested with LibreElec running kernel v5.1.2.
Following peripherals tested and work:

Peripheral works:
- UART2 debug
- eMMC
- USB 3.0 port
- USB 2.0 port
- sdio, sd-card
- HDMI
- Ethernet
- WiFi/BT

Not tested:
- Type-C port
- OPTICAL
- IR
Signed-off-by: Vivek Unune <npcomplete13@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Documentation/devicetree/bindings/arm/rockchip.yaml

@@ -316,6 +316,11 @@ properties:
           - const: haoyu,marsboard-rk3066
           - const: rockchip,rk3066a
 
+      - description: Hugsun X99 TV Box
+        items:
+          - const: hugsun,x99
+          - const: rockchip,rk3399
+
       - description: Khadas Edge series boards
         items:
           - enum:

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -375,6 +375,8 @@ patternProperties:
     description: Hewlett Packard
   "^holtek,.*":
     description: Holtek Semiconductor, Inc.
+  "^hugsun,.*":
+    description: Shenzhen Hugsun Technology Co. Ltd.
   "^hwacom,.*":
     description: HwaCom Systems Inc.
   "^i2se,.*":

arch/arm64/boot/dts/rockchip/Makefile

@@ -16,6 +16,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-bob.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-kevin.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-scarlet-inx.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-scarlet-kd.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-hugsun-x99.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge-captain.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge-v.dtb