Add entries for the MT8188-based Chromebook "Ciri", also known as
Lenovo Chromebook Duet (11", 9).

This device features a detachable design with touchscreen, detachable
keyboard and USI 2.0 Stylus support, and has 8 SKUs to accommodate the
combinations of second-source components.

Signed-off-by: Fei Shao <fshao@chromium.org>
---

 Documentation/devicetree/bindings/arm/mediatek.yaml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml
index 1d4bb50fcd8d..4b68f0baf010 100644
--- a/Documentation/devicetree/bindings/arm/mediatek.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek.yaml
@@ -307,6 +307,19 @@ properties:
           - enum:
               - mediatek,mt8186-evb
           - const: mediatek,mt8186
+      - description: Google Ciri (Lenovo Chromebook Duet (11", 9))
+        items:
+          - enum:
+              - google,ciri-sku0
+              - google,ciri-sku1
+              - google,ciri-sku2
+              - google,ciri-sku3
+              - google,ciri-sku4
+              - google,ciri-sku5
+              - google,ciri-sku6
+              - google,ciri-sku7
+          - const: google,ciri
+          - const: mediatek,mt8188
       - items:
           - enum:
               - mediatek,mt8188-evb
-- 
2.47.0.163.g1226f6d8fa-goog