[PATCH v4 1/3] dt-bindings: arm: rockchip: Document Radxa ROCK 4C+

[Jagan Teki]

Document the dt-bindings for Radxa ROCK 4C+ SBC.

Key differences of 4C+ compared to previous ROCK Pi 4.
- Rockchip RK3399-T SoC
- DP from 4C replaced with micro HDMI 2K at 60fps
- 4-lane MIPI DSI with 1920*1080
- RK817 Audio codec

Also, an official naming convention from Radxa mention to remove
Pi from board name, so this 4C+ is named as Radxa ROCK 4C+ not
Radxa ROCK Pi 4C+.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
---
Changes for v4:
- none
Changes for v3:
- updated commit message
Changes for v2:
- fix line wrapping
- collect Krzysztof Ack

 Documentation/devicetree/bindings/arm/rockchip.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/rockchip.yaml b/Documentation/devicetree/bindings/arm/rockchip.yaml
index 7811ba64149c..ec3525fb1e60 100644
--- a/Documentation/devicetree/bindings/arm/rockchip.yaml
+++ b/Documentation/devicetree/bindings/arm/rockchip.yaml
@@ -537,6 +537,11 @@ properties:
           - const: radxa,rockpi4
           - const: rockchip,rk3399
 
+      - description: Radxa ROCK 4C+
+        items:
+          - const: radxa,rock-4c-plus
+          - const: rockchip,rk3399
+
       - description: Radxa ROCK Pi E
         items:
           - const: radxa,rockpi-e
-- 
2.25.1