diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index fcf825244d3f..b5ca610d9f69 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -981,6 +981,9 @@ mmsys: syscon@14000000 {
 			compatible = "mediatek,mt8183-mmsys", "syscon";
 			reg = <0 0x14000000 0 0x1000>;
 			#clock-cells = <1>;
+			mboxes = <&gce 0 CMDQ_THR_PRIO_HIGHEST>,
+				 <&gce 1 CMDQ_THR_PRIO_HIGHEST>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
 		};
 
 		ovl0: ovl@14008000 {
@@ -1056,6 +1059,7 @@ ccorr0: ccorr@1400f000 {
 			interrupts = <GIC_SPI 232 IRQ_TYPE_LEVEL_LOW>;
 			power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
 			clocks = <&mmsys CLK_MM_DISP_CCORR0>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0xf000 0x1000>;
 		};
 
 		aal0: aal@14010000 {
@@ -1065,6 +1069,7 @@ aal0: aal@14010000 {
 			interrupts = <GIC_SPI 233 IRQ_TYPE_LEVEL_LOW>;
 			power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
 			clocks = <&mmsys CLK_MM_DISP_AAL0>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0 0x1000>;
 		};
 
 		gamma0: gamma@14011000 {
@@ -1073,6 +1078,7 @@ gamma0: gamma@14011000 {
 			interrupts = <GIC_SPI 234 IRQ_TYPE_LEVEL_LOW>;
 			power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
 			clocks = <&mmsys CLK_MM_DISP_GAMMA0>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0x1000 0x1000>;
 		};
 
 		dither0: dither@14012000 {
@@ -1081,6 +1087,7 @@ dither0: dither@14012000 {
 			interrupts = <GIC_SPI 235 IRQ_TYPE_LEVEL_LOW>;
 			power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
 			clocks = <&mmsys CLK_MM_DISP_DITHER0>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0x2000 0x1000>;
 		};
 
 		dsi0: dsi@14014000 {