diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml
index a95215ba6361..666408d32f5c 100644
--- a/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml
+++ b/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml
@@ -45,12 +45,16 @@ properties:
       - const: i2s3_m
       - const: i2s3_b
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
   - interrupts
   - clocks
   - clock-names
+  - power-domains
 
 additionalProperties: false
 
@@ -59,11 +63,13 @@ examples:
     #include <dt-bindings/clock/mt8173-clk.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/mt8173-power.h>
 
     mt8173-afe-pcm@11220000 {
         compatible = "mediatek,mt8173-afe-pcm";
         reg = <0x11220000 0x1000>;
         interrupts = <GIC_SPI 134 IRQ_TYPE_EDGE_FALLING>;
+        power-domains = <&spm MT8173_POWER_DOMAIN_AUDIO>;
         clocks = <&infracfg CLK_INFRA_AUDIO>,
                  <&topckgen CLK_TOP_AUDIO_SEL>,
                  <&topckgen CLK_TOP_AUD_INTBUS_SEL>,