[PATCH v3 09/10] arm64: dts: apple: Add MTP DockChannel HID nodes
Michael Reeves via B4 Relay
devnull+michael.reeves077.gmail.com at kernel.org
Fri Sep 18 06:28:39 PDT 2026
From: Michael Reeves <michael.reeves077 at gmail.com>
Add disabled MTP nodes for the Apple SoCs used by M2 and M3 systems.
Each instance describes the RTKit ASC mailbox, MTP DART, DockChannel
mailbox, and DockChannel HID client. Board files can enable them on
machines that route internal input through MTP.
Co-developed-by: Hector Martin <marcan at marcan.st>
Signed-off-by: Hector Martin <marcan at marcan.st>
Signed-off-by: Michael Reeves <michael.reeves077 at gmail.com>
---
arch/arm64/boot/dts/apple/t602x-die0.dtsi | 46 ++++++++++++++++++++++++++++++
arch/arm64/boot/dts/apple/t6030.dtsi | 46 ++++++++++++++++++++++++++++++
arch/arm64/boot/dts/apple/t6031-die0.dtsi | 46 ++++++++++++++++++++++++++++++
arch/arm64/boot/dts/apple/t8112.dtsi | 46 ++++++++++++++++++++++++++++++
arch/arm64/boot/dts/apple/t8122.dtsi | 47 +++++++++++++++++++++++++++++++
5 files changed, 231 insertions(+)
diff --git a/arch/arm64/boot/dts/apple/t602x-die0.dtsi b/arch/arm64/boot/dts/apple/t602x-die0.dtsi
index c33623f0e..5f62d0a9c 100644
--- a/arch/arm64/boot/dts/apple/t602x-die0.dtsi
+++ b/arch/arm64/boot/dts/apple/t602x-die0.dtsi
@@ -161,6 +161,52 @@ pinctrl_smc: pinctrl at 2a2820000 {
<AIC_IRQ 0 857 IRQ_TYPE_LEVEL_HIGH>;
};
+ mtp_mbox: mbox at 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 at 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: mailbox at 2a9b14000 {
+ compatible = "apple,t6020-dockchannel", "apple,t8112-dockchannel";
+ reg = <0x2 0xa9b14000 0x0 0x4000>,
+ <0x2 0xa9b30000 0x0 0x4000>,
+ <0x2 0xa9b34000 0x0 0x4000>;
+ reg-names = "irq", "config", "data";
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 0 677 IRQ_TYPE_LEVEL_HIGH>;
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_hid: hid at 2a9400000 {
+ compatible = "apple,t6020-dockchannel-hid", "apple,t8112-dockchannel-hid";
+ reg = <0x2 0xa9400000 0x0 0x4000>,
+ <0x2 0xa9c00000 0x0 0x100000>;
+ reg-names = "coproc-asc", "coproc-sram";
+ mboxes = <&mtp_mbox>, <&mtp_dockchannel>;
+ mbox-names = "asc", "dockchannel";
+ iommus = <&mtp_dart 1>;
+ status = "disabled";
+ };
+
sio_dart: iommu at 39b008000 {
compatible = "apple,t6020-dart", "apple,t8110-dart";
reg = <0x3 0x9b008000 0x0 0x8000>;
diff --git a/arch/arm64/boot/dts/apple/t6030.dtsi b/arch/arm64/boot/dts/apple/t6030.dtsi
index dda9568af..e460e547e 100644
--- a/arch/arm64/boot/dts/apple/t6030.dtsi
+++ b/arch/arm64/boot/dts/apple/t6030.dtsi
@@ -474,6 +474,52 @@ wdt: watchdog at 3642b0000 {
interrupts = <AIC_IRQ 480 IRQ_TYPE_LEVEL_HIGH>;
};
+ mtp_mbox: mbox at 37a408000 {
+ compatible = "apple,t6030-asc-mailbox", "apple,asc-mailbox-v4";
+ reg = <0x3 0x7a408000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 953 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 954 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 955 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 956 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "send-empty", "send-not-empty",
+ "recv-empty", "recv-not-empty";
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_dart: iommu at 37a808000 {
+ compatible = "apple,t6030-dart", "apple,t8110-dart";
+ reg = <0x3 0x7a808000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 937 IRQ_TYPE_LEVEL_HIGH>;
+ #iommu-cells = <1>;
+ status = "disabled";
+ };
+
+ mtp_dockchannel: mailbox at 37ab14000 {
+ compatible = "apple,t6030-dockchannel", "apple,t8112-dockchannel";
+ reg = <0x3 0x7ab14000 0x0 0x4000>,
+ <0x3 0x7ab30000 0x0 0x4000>,
+ <0x3 0x7ab34000 0x0 0x4000>;
+ reg-names = "irq", "config", "data";
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 939 IRQ_TYPE_LEVEL_HIGH>;
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_hid: hid at 37a400000 {
+ compatible = "apple,t6030-dockchannel-hid", "apple,t8112-dockchannel-hid";
+ reg = <0x3 0x7a400000 0x0 0x4000>,
+ <0x3 0x7ac00000 0x0 0x100000>;
+ reg-names = "coproc-asc", "coproc-sram";
+ mboxes = <&mtp_mbox>, <&mtp_dockchannel>;
+ mbox-names = "asc", "dockchannel";
+ iommus = <&mtp_dart 1>;
+ status = "disabled";
+ };
+
pinctrl_smc: pinctrl at 36c820000 {
compatible = "apple,t6030-pinctrl", "apple,t8103-pinctrl";
reg = <0x3 0x6c820000 0x0 0x4000>;
diff --git a/arch/arm64/boot/dts/apple/t6031-die0.dtsi b/arch/arm64/boot/dts/apple/t6031-die0.dtsi
index 47d08672a..d7a6d72b3 100644
--- a/arch/arm64/boot/dts/apple/t6031-die0.dtsi
+++ b/arch/arm64/boot/dts/apple/t6031-die0.dtsi
@@ -195,3 +195,49 @@ serial0: serial at 391200000 {
power-domains = <&ps_uart0>;
status = "disabled";
};
+
+ mtp_mbox: mbox at 2ac408000 {
+ compatible = "apple,t6031-asc-mailbox", "apple,asc-mailbox-v4";
+ reg = <0x2 0xac408000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 0 692 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 0 693 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 0 694 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 0 695 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "send-empty", "send-not-empty",
+ "recv-empty", "recv-not-empty";
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_dart: iommu at 2ac808000 {
+ compatible = "apple,t6031-dart", "apple,t8110-dart";
+ reg = <0x2 0xac808000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 0 675 IRQ_TYPE_LEVEL_HIGH>;
+ #iommu-cells = <1>;
+ status = "disabled";
+ };
+
+ mtp_dockchannel: mailbox at 2acb14000 {
+ compatible = "apple,t6031-dockchannel", "apple,t8112-dockchannel";
+ reg = <0x2 0xacb14000 0x0 0x4000>,
+ <0x2 0xacb30000 0x0 0x4000>,
+ <0x2 0xacb34000 0x0 0x4000>;
+ reg-names = "irq", "config", "data";
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 0 676 IRQ_TYPE_LEVEL_HIGH>;
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_hid: hid at 2ac400000 {
+ compatible = "apple,t6031-dockchannel-hid", "apple,t8112-dockchannel-hid";
+ reg = <0x2 0xac400000 0x0 0x4000>,
+ <0x2 0xacc00000 0x0 0x100000>;
+ reg-names = "coproc-asc", "coproc-sram";
+ mboxes = <&mtp_mbox>, <&mtp_dockchannel>;
+ mbox-names = "asc", "dockchannel";
+ iommus = <&mtp_dart 1>;
+ status = "disabled";
+ };
diff --git a/arch/arm64/boot/dts/apple/t8112.dtsi b/arch/arm64/boot/dts/apple/t8112.dtsi
index ec248ca05..d5c2f35ef 100644
--- a/arch/arm64/boot/dts/apple/t8112.dtsi
+++ b/arch/arm64/boot/dts/apple/t8112.dtsi
@@ -987,6 +987,52 @@ pinctrl_aop: pinctrl at 24a820000 {
<AIC_IRQ 307 IRQ_TYPE_LEVEL_HIGH>;
};
+ mtp_mbox: mbox at 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 at 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: mailbox at 24eb14000 {
+ compatible = "apple,t8112-dockchannel";
+ reg = <0x2 0x4eb14000 0x0 0x4000>,
+ <0x2 0x4eb30000 0x0 0x4000>,
+ <0x2 0x4eb34000 0x0 0x4000>;
+ reg-names = "irq", "config", "data";
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 850 IRQ_TYPE_LEVEL_HIGH>;
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_hid: hid at 24e400000 {
+ compatible = "apple,t8112-dockchannel-hid";
+ reg = <0x2 0x4e400000 0x0 0x4000>,
+ <0x2 0x4ec00000 0x0 0x100000>;
+ reg-names = "coproc-asc", "coproc-sram";
+ mboxes = <&mtp_mbox>, <&mtp_dockchannel>;
+ mbox-names = "asc", "dockchannel";
+ iommus = <&mtp_dart 1>;
+ status = "disabled";
+ };
+
ans_mbox: mbox at 277408000 {
compatible = "apple,t8112-asc-mailbox", "apple,asc-mailbox-v4";
reg = <0x2 0x77408000 0x0 0x4000>;
diff --git a/arch/arm64/boot/dts/apple/t8122.dtsi b/arch/arm64/boot/dts/apple/t8122.dtsi
index 1ee61c5b3..47102f431 100644
--- a/arch/arm64/boot/dts/apple/t8122.dtsi
+++ b/arch/arm64/boot/dts/apple/t8122.dtsi
@@ -438,6 +438,53 @@ pinctrl_aop: pinctrl at 2f4824000 {
<AIC_IRQ 351 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ 352 IRQ_TYPE_LEVEL_HIGH>;
};
+
+ mtp_mbox: mbox at 2fa408000 {
+ compatible = "apple,t8122-asc-mailbox", "apple,asc-mailbox-v4";
+ reg = <0x2 0xfa408000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 838 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 839 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 840 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 841 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "send-empty", "send-not-empty",
+ "recv-empty", "recv-not-empty";
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_dart: iommu at 2fa808000 {
+ compatible = "apple,t8122-dart", "apple,t8110-dart";
+ reg = <0x2 0xfa808000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 822 IRQ_TYPE_LEVEL_HIGH>;
+ #iommu-cells = <1>;
+ status = "disabled";
+ };
+
+ mtp_dockchannel: mailbox at 2fab14000 {
+ compatible = "apple,t8122-dockchannel", "apple,t8112-dockchannel";
+ reg = <0x2 0xfab14000 0x0 0x4000>,
+ <0x2 0xfab30000 0x0 0x4000>,
+ <0x2 0xfab34000 0x0 0x4000>;
+ reg-names = "irq", "config", "data";
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 824 IRQ_TYPE_LEVEL_HIGH>;
+ #mbox-cells = <0>;
+ status = "disabled";
+ };
+
+ mtp_hid: hid at 2fa400000 {
+ compatible = "apple,t8122-dockchannel-hid",
+ "apple,t8112-dockchannel-hid";
+ reg = <0x2 0xfa400000 0x0 0x4000>,
+ <0x2 0xfac00000 0x0 0x100000>;
+ reg-names = "coproc-asc", "coproc-sram";
+ mboxes = <&mtp_mbox>, <&mtp_dockchannel>;
+ mbox-names = "asc", "dockchannel";
+ iommus = <&mtp_dart 1>;
+ status = "disabled";
+ };
};
};
--
2.55.0
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