arm64: dts: apple: t8112: Add dcpext/dispext0 nodes

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

arch/arm64/boot/dts/apple/t8112.dtsi

@@ -454,6 +454,14 @@
 		clock-output-names = "clk_disp0";
 	};
 
+	/* Pixel clock? frequency in Hz (compare: 4K@60 VGA clock 533.250 MHz) */
+	clk_dispext0: clock-dispext0 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+		clock-output-names = "clk_dispext0";
+	};
+
 	reserved-memory {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -1399,6 +1407,73 @@
 
 		};
 
+		dispext0_dart: iommu@271304000 {
+			compatible = "apple,t8112-dart", "apple,t8110-dart";
+			reg = <0x2 0x71304000 0x0 0x4000>;
+			#iommu-cells = <1>;
+			apple,dma-range = <0x0 0x0 0xf 0xffff0000>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 593 IRQ_TYPE_LEVEL_HIGH>;
+			power-domains = <&ps_dispext_cpu0>;
+			status = "disabled";
+		};
+
+		dcpext_dart: iommu@27130c000 {
+			compatible = "apple,t8112-dart", "apple,t8110-dart";
+			reg = <0x2 0x7130c000 0x0 0x4000>;
+			#iommu-cells = <1>;
+			apple,dma-range = <0x8 0x0 0x7 0xffff0000>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 593 IRQ_TYPE_LEVEL_HIGH>;
+			power-domains = <&ps_dispext_cpu0>;
+			status = "disabled";
+		};
+
+		dcpext_mbox: mbox@271c08000 {
+			compatible = "apple,t8112-asc-mailbox", "apple,asc-mailbox-v4";
+			reg = <0x2 0x71c08000 0x0 0x4000>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 578 IRQ_TYPE_LEVEL_HIGH>,
+			<AIC_IRQ 579 IRQ_TYPE_LEVEL_HIGH>,
+			<AIC_IRQ 580 IRQ_TYPE_LEVEL_HIGH>,
+			<AIC_IRQ 581 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "send-empty", "send-not-empty",
+			"recv-empty", "recv-not-empty";
+			#mbox-cells = <0>;
+			power-domains = <&ps_dispext_cpu0>;
+			resets = <&ps_dispext_cpu0>;
+			status = "disabled";
+		};
+
+		dcpext: dcp@271c00000 {
+			compatible = "apple,t8112-dcpext", "apple,dcpext";
+			mboxes = <&dcpext_mbox>;
+			mbox-names = "mbox";
+			iommus = <&dcpext_dart 5>;
+			phandle = <&dcpext>;
+
+			/* the ADT has 2 additional regs which seems to be unused */
+			reg-names = "coproc", "disp-0", "disp-1", "disp-2", "disp-3";
+			reg = <0x2 0x71c00000 0x0 0x4000>,
+			      <0x2 0x70000000 0x0 0x61C000>,
+			      <0x2 0x71320000 0x0 0x4000>,
+			      <0x2 0x71344000 0x0 0x4000>,
+			      <0x2 0x71800000 0x0 0x800000>;
+			apple,bw-scratch = <&pmgr_dcp 0 4 0x5e0>;
+			power-domains = <&ps_dispext_cpu0>;
+			resets = <&ps_dispext_cpu0>;
+			clocks = <&clk_dispext0>;
+			apple,dcp-index = <1>;
+			status = "disabled";
+			// required bus properties for 'piodma' subdevice
+			#address-cells = <2>;
+			#size-cells = <2>;
+
+			piodma {
+				iommus = <&dispext0_dart 4>;
+			};
+		};
+
 		ans_mbox: mbox@277408000 {
 			compatible = "apple,t8112-asc-mailbox", "apple,asc-mailbox-v4";
 			reg = <0x2 0x77408000 0x0 0x4000>;