arm64: dts: imx8mq: add GPC power domains

This adds support for the power domain controller found on the
i.MX8MQ SoC.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -5,6 +5,7 @@
  */
 
 #include <dt-bindings/clock/imx8mq-clock.h>
+#include <dt-bindings/power/imx8mq-power.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include "imx8mq-pinfunc.h"
@@ -252,6 +253,75 @@ clk: clock-controller@30380000 {
 				              "clk_ext1", "clk_ext2",
 				              "clk_ext3", "clk_ext4";
 			};
+
+			gpc: gpc@303a0000 {
+				compatible = "fsl,imx8mq-gpc";
+				reg = <0x303a0000 0x10000>;
+
+				pgc {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					pgc_mipi: power-domain@0 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_MIPI>;
+					};
+
+					pgc_pcie1: power-domain@1 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_PCIE1>;
+					};
+
+					pgc_otg1: power-domain@2 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_USB_OTG1>;
+					};
+
+					pgc_otg2: power-domain@3 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_USB_OTG2>;
+					};
+
+					pgc_ddr1: power-domain@4 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_DDR1>;
+					};
+
+					pgc_gpu: power-domain@5 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_GPU>;
+						clocks = <&clk IMX8MQ_CLK_GPU_ROOT>,
+						         <&clk IMX8MQ_CLK_GPU_SHADER_DIV>,
+							 <&clk IMX8MQ_CLK_GPU_AXI>,
+						         <&clk IMX8MQ_CLK_GPU_AHB>;
+					};
+
+					pgc_vpu: power-domain@6 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_VPU>;
+					};
+
+					pgc_disp: power-domain@7 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_DISP>;
+					};
+
+					pgc_mipi_csi1: power-domain@8 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_MIPI_CSI1>;
+					};
+
+					pgc_mipi_csi2: power-domain@9 {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_MIPI_CSI2>;
+					};
+
+					pgc_pcie2: power-domain@a {
+						#power-domain-cells = <0>;
+						reg = <IMX8M_POWER_DOMAIN_PCIE2>;
+					};
+				};
+			};
 		};
 
 		bus@30400000 { /* AIPS2 */