Current, the DT bindings for Mediatek OD (display overdrive) is missing
the mediatek,gce-client-reg property. Add it and update the example as
well.

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
---
 .../bindings/display/mediatek/mediatek,od.yaml         | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml
index 71534febd49c6..d5b42a4bba190 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml
@@ -60,6 +60,14 @@ properties:
       - port@0
       - port@1
 
+  mediatek,gce-client-reg:
+    description: The register of client driver can be configured by gce with
+      4 arguments defined in this property, such as phandle of gce, subsys id,
+      register offset and size. Each GCE subsys id is mapping to a client
+      defined in the header include/dt-bindings/gce/<chip>-gce.h.
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -70,6 +78,7 @@ additionalProperties: false
 examples:
   - |
     #include <dt-bindings/clock/mt8173-clk.h>
+    #include <dt-bindings/gce/mt8173-gce.h>
 
     soc {
         #address-cells = <2>;
@@ -79,5 +88,6 @@ examples:
             compatible = "mediatek,mt8173-disp-od";
             reg = <0 0x14023000 0 0x1000>;
             clocks = <&mmsys CLK_MM_DISP_OD>;
+            mediatek,gce-client-reg = <&gce SUBSYS_1402XXXX 0x3000 0x1000>;
         };
     };
-- 
2.50.1