arm64: dts: apple: Add DockChannel HID nodes

Add the required nodes for DockChannel, DockChannel
HID and MTP (a coprocessor that facilitates DockChannel
HID communication) to t602x and t8112 (the only currently
in-tree DTs which support DockChannel HID). They are disabled
by default, to be enabled only on the laptop variants of
these chipsets which actually have the internal HID hardware.

Co-developed-by: Hector Martin <[email protected]>
Signed-off-by: Hector Martin <[email protected]>
Signed-off-by: Michael Reeves <[email protected]>

Author: IntegralPilot

arch/arm64/boot/dts/apple/t602x-die0.dtsi

@@ -144,6 +144,73 @@
 				<AIC_IRQ 0 857 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	mtp: mtp@2a9400000 {
+		compatible = "apple,t6020-mtp";
+		reg = <0x2 0xa9400000 0x0 0x4000>,
+		      <0x2 0xa9c00000 0x0 0x100000>;
+		reg-names = "asc", "sram";
+
+		status = "disabled";
+	};
+
+	mtp_mbox: mbox@2a9408000 {
+		compatible = "apple,t6020-asc-mailbox", "apple,asc-mailbox-v4";
+		reg = <0x2 0xa9408000 0x0 0x4000>;
+		interrupt-parent = <&aic>;
+		interrupts = <AIC_IRQ 0 693 IRQ_TYPE_LEVEL_HIGH>,
+				<AIC_IRQ 0 694 IRQ_TYPE_LEVEL_HIGH>,
+				<AIC_IRQ 0 695 IRQ_TYPE_LEVEL_HIGH>,
+				<AIC_IRQ 0 696 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "send-empty", "send-not-empty",
+					"recv-empty", "recv-not-empty";
+		#mbox-cells = <0>;
+
+		status = "disabled";
+	};
+
+	mtp_dart: iommu@2a9808000 {
+		compatible = "apple,t6020-dart", "apple,t8110-dart";
+		reg = <0x2 0xa9808000 0x0 0x4000>;
+		interrupt-parent = <&aic>;
+		interrupts = <AIC_IRQ 0 676 IRQ_TYPE_LEVEL_HIGH>;
+		#iommu-cells = <1>;
+
+		status = "disabled";
+	};
+
+	mtp_dockchannel: fifo@2a9b14000 {
+		compatible = "apple,t6020-dockchannel";
+		reg = <0x2 0xa9b14000 0x0 0x4000>;
+
+		interrupt-parent = <&aic>;
+		interrupts = <AIC_IRQ 0 677 IRQ_TYPE_LEVEL_HIGH>;
+
+		ranges = <0 0x2 0xa9b28000 0x20000>;
+		nonposted-mmio;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		interrupt-controller;
+		#interrupt-cells = <2>;
+
+		status = "disabled";
+
+		mtp_hid: input@8000 {
+			compatible = "apple,t6020-dockchannel-hid";
+			reg = <0x8000 0x4000>, <0xc000 0x4000>;
+			reg-names = "config", "data";
+
+			mboxes = <&mtp_mbox>;
+			iommus = <&mtp_dart 1>;
+			apple,mtp = <&mtp>;
+
+			interrupt-parent = <&mtp_dockchannel>;
+			interrupts = <2 IRQ_TYPE_LEVEL_HIGH>,
+					<3 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "tx", "rx";
+		};
+	};
+
 	sio_dart: iommu@39b008000 {
 		compatible = "apple,t6020-dart", "apple,t8110-dart";
 		reg = <0x3 0x9b008000 0x0 0x8000>;

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

@@ -976,6 +976,74 @@
 				     <AIC_IRQ 307 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		mtp: mtp@24e400000 {
+			compatible = "apple,t8112-mtp", "apple,t6020-mtp";
+			reg = <0x2 0x4e400000 0x0 0x4000>,
+			      <0x2 0x4ec00000 0x0 0x100000>;
+			reg-names = "asc", "sram";
+
+			status = "disabled";
+		};
+
+		mtp_mbox: mbox@24e408000 {
+			compatible = "apple,t8112-asc-mailbox", "apple,asc-mailbox-v4";
+			reg = <0x2 0x4e408000 0x0 0x4000>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 864 IRQ_TYPE_LEVEL_HIGH>,
+						 <AIC_IRQ 865 IRQ_TYPE_LEVEL_HIGH>,
+						 <AIC_IRQ 866 IRQ_TYPE_LEVEL_HIGH>,
+						 <AIC_IRQ 867 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "send-empty", "send-not-empty",
+							  "recv-empty", "recv-not-empty";
+			#mbox-cells = <0>;
+
+			status = "disabled";
+		};
+
+		mtp_dart: iommu@24e808000 {
+			compatible = "apple,t8110-dart";
+			reg = <0x2 0x4e808000 0x0 0x4000>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 848 IRQ_TYPE_LEVEL_HIGH>;
+			#iommu-cells = <1>;
+
+			status = "disabled";
+		};
+
+		mtp_dockchannel: fifo@24eb14000 {
+			compatible = "apple,t8112-dockchannel", "apple,t6020-dockchannel";
+			reg = <0x2 0x4eb14000 0x0 0x4000>;
+
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 850 IRQ_TYPE_LEVEL_HIGH>;
+
+			ranges = <0 0x2 0x4eb28000 0x20000>;
+			nonposted-mmio;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			status = "disabled";
+
+			mtp_hid: input@8000 {
+				compatible = "apple,t8112-dockchannel-hid",
+					     "apple,t6020-dockchannel-hid";
+				reg = <0x8000 0x4000>, <0xc000 0x4000>;
+				reg-names = "config", "data";
+
+				mboxes = <&mtp_mbox>;
+				iommus = <&mtp_dart 1>;
+				apple,mtp = <&mtp>;
+
+				interrupt-parent = <&mtp_dockchannel>;
+				interrupts = <2 IRQ_TYPE_LEVEL_HIGH>,
+					     <3 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-names = "tx", "rx";
+			};
+		};
+
 		ans_mbox: mbox@277408000 {
 			compatible = "apple,t8112-asc-mailbox", "apple,asc-mailbox-v4";
 			reg = <0x2 0x77408000 0x0 0x4000>;