[PATCH 17/19] arm64: dts: apple: t8103: Add USB4 ACIO and NHI
Mika Westerberg
mika.westerberg at linux.intel.com
Tue Sep 1 03:20:41 PDT 2026
On Sun, Aug 30, 2026 at 10:19:35PM +0200, Sven Peter wrote:
> Add the ACIO host router, NHI, DART and M3 mailbox nodes for both
> Type-C ports on t8103 and connect the host routers to the Type-C
> connectors.
>
> Signed-off-by: Sven Peter <sven at kernel.org>
> ---
> arch/arm64/boot/dts/apple/t8103-jxxx.dtsi | 61 ++++++++++
> arch/arm64/boot/dts/apple/t8103.dtsi | 188 ++++++++++++++++++++++++++++++
> 2 files changed, 249 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi b/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi
> index 686fb1dd215d..acdefa2a0084 100644
> --- a/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi
> +++ b/arch/arm64/boot/dts/apple/t8103-jxxx.dtsi
> @@ -17,6 +17,10 @@ aliases {
> wifi0 = &wifi0;
> atcphy0 = &atcphy0;
> atcphy1 = &atcphy1;
> + usb4-0-acio = &usb4_0_acio;
> + usb4-0-nhi = &usb4_0_nhi;
> + usb4-1-acio = &usb4_1_acio;
> + usb4-1-nhi = &usb4_1_nhi;
> };
>
> chosen {
> @@ -76,6 +80,13 @@ typec0_connector_ss: endpoint {
> remote-endpoint = <&atcphy0_typec_lanes>;
> };
> };
> +
> + port at 2 {
> + reg = <2>;
> + typec0_con_tbt: endpoint {
> + remote-endpoint = <&usb4_0_acio_tbt>;
> + };
> + };
> };
> };
> };
> @@ -107,6 +118,13 @@ typec1_connector_ss: endpoint {
> remote-endpoint = <&atcphy1_typec_lanes>;
> };
> };
> +
> + port at 2 {
> + reg = <2>;
> + typec1_con_tbt: endpoint {
> + remote-endpoint = <&usb4_1_acio_tbt>;
> + };
> + };
> };
> };
> };
> @@ -198,6 +216,49 @@ atcphy1_usb3: endpoint {
> };
> };
>
> +/* USB4 */
> +&usb4_0_acio {
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* 1: USB4 port */
> + port at 1 {
> + reg = <1>;
> + usb4_0_acio_tbt: endpoint {
> + remote-endpoint = <&typec0_con_tbt>;
> + };
> + };
> +
> + /* 2: unused(?) USB4 port */
I'm assuming these are all adapters in a router so the 2 here is the lane 1
adapter. One USB4 port has always 2 lane adapters: lane 0 and lane 1.
> + /* 3: PCIe */
> + /* 4: USB3 */
> + /* 5: DP0 */
> + /* 6: DP1 */
> + };
> +};
> +
> +&usb4_1_acio {
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* 1: USB4 port */
> + port at 1 {
> + reg = <1>;
> + usb4_1_acio_tbt: endpoint {
> + remote-endpoint = <&typec1_con_tbt>;
> + };
> + };
> +
> + /* 2: unused(?) USB4 port */
Same here.
> + /* 3: PCIe */
> + /* 4: USB3 */
> + /* 5: DP0 */
> + /* 6: DP1 */
> + };
> +};
> +
> /*
> * Force the bus number assignments so that we can declare some of the
> * on-board devices and properties that are populated by the bootloader
> diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
> index 5b68bf0df4e6..f83ed8da9a42 100644
> --- a/arch/arm64/boot/dts/apple/t8103.dtsi
> +++ b/arch/arm64/boot/dts/apple/t8103.dtsi
> @@ -982,6 +982,14 @@ pinctrl_aop: pinctrl at 24a820000 {
> <AIC_IRQ 272 IRQ_TYPE_LEVEL_HIGH>,
> <AIC_IRQ 273 IRQ_TYPE_LEVEL_HIGH>,
> <AIC_IRQ 274 IRQ_TYPE_LEVEL_HIGH>;
> +
> + acio0_pins: acio0-pins {
> + pinmux = <APPLE_PINMUX(39, 1)>;
> + };
> +
> + acio1_pins: acio1-pins {
> + pinmux = <APPLE_PINMUX(41, 1)>;
> + };
> };
>
> ans_mbox: mbox at 277408000 {
> @@ -1018,6 +1026,96 @@ nvme at 27bcc0000 {
> resets = <&ps_ans2>;
> };
>
> + usb4_0_mbox: mailbox at 381100000 {
> + compatible = "apple,t8103-m3-mailbox",
> + "apple,m3-mailbox-v2";
> + reg = <0x3 0x81100000 0x0 0x4000>;
> + interrupt-parent = <&aic>;
> + interrupts = <AIC_IRQ 812 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 813 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 814 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 815 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "send-empty", "send-not-empty",
> + "recv-empty", "recv-not-empty";
> + #mbox-cells = <0>;
> + };
> +
> + usb4_0_acio: cio at 381ac0000 {
> + compatible = "apple,t8103-usb4-acio";
> + reg = <0x3 0x81ac0000 0x0 0xc000>,
> + <0x3 0x81080000 0x0 0x20000>;
> + reg-names = "rc", "sram";
> +
> + mboxes = <&usb4_0_mbox>;
> + resets = <&cio_reset 0>;
> +
> + power-domains = <&ps_atc0_cio>,
> + <&ps_atc0_cio_pcie>,
> + <&ps_atc0_cio_usb>;
> +
> + thunderbolt-switch;
> +
> + pinctrl-0 = <&acio0_pins>;
> + pinctrl-names = "default";
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0x3 0x81000000 0x1000000>;
> + nonposted-mmio;
> +
> + usb4_0_dart: iommu at a80000 {
> + compatible = "apple,t8103-dart";
> + reg = <0xa80000 0x4000>;
> + interrupt-parent = <&aic>;
> + interrupts = <AIC_IRQ 810 IRQ_TYPE_LEVEL_HIGH>;
> + #iommu-cells = <1>;
> + };
> +
> + usb4_0_nhi: nhi at f00000 {
> + reg = <0xf00000 0x100000>,
> + <0xdb0000 0x30004>;
> + reg-names = "nhi", "pdf";
> + compatible = "apple,t8103-usb4-nhi";
> + interrupt-parent = <&aic>;
> + interrupts = <AIC_IRQ 783 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 784 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 785 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 786 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 787 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 788 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 789 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 790 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 791 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 792 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 793 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 794 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 795 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 796 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 797 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 798 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 799 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 800 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 801 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 802 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 803 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 804 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 805 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 806 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names =
> + "txring0", "txring1", "txring2",
> + "txring3", "txring4", "txring5",
> + "txring6", "txring7", "txring8",
> + "txring9", "txring10", "txring11",
> + "rxring0", "rxring1", "rxring2",
> + "rxring3", "rxring4", "rxring5",
> + "rxring6", "rxring7", "rxring8",
> + "rxring9", "rxring10", "rxring11";
> + iommus = <&usb4_0_dart 1>;
> + /* To be filled by the loader */
> + apple,thunderbolt-drom = [00];
> + };
> + };
> +
> dwc3_0: usb at 382280000 {
> compatible = "apple,t8103-dwc3";
> reg = <0x3 0x82280000 0x0 0xcd00>, <0x3 0x8228cd00 0x0 0x3200>;
> @@ -1070,6 +1168,96 @@ atcphy0: phy at 383000000 {
> power-domains = <&ps_atc0_usb>;
> };
>
> + usb4_1_mbox: mailbox at 501100000 {
> + compatible = "apple,t8103-m3-mailbox",
> + "apple,m3-mailbox-v2";
> + reg = <0x5 0x01100000 0x0 0x4000>;
> + interrupt-parent = <&aic>;
> + interrupts = <AIC_IRQ 892 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 893 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 894 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 895 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "send-empty", "send-not-empty",
> + "recv-empty", "recv-not-empty";
> + #mbox-cells = <0>;
> + };
> +
> + usb4_1_acio: cio at 501ac0000 {
> + compatible = "apple,t8103-usb4-acio";
> + reg = <0x5 0x01ac0000 0x0 0xc000>,
> + <0x5 0x01080000 0x0 0x20000>;
> + reg-names = "rc", "sram";
> +
> + mboxes = <&usb4_1_mbox>;
> + resets = <&cio_reset 1>;
> +
> + power-domains = <&ps_atc1_cio>,
> + <&ps_atc1_cio_pcie>,
> + <&ps_atc1_cio_usb>;
> +
> + thunderbolt-switch;
> +
> + pinctrl-0 = <&acio1_pins>;
> + pinctrl-names = "default";
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0x5 0x01000000 0x1000000>;
> + nonposted-mmio;
> +
> + usb4_1_dart: iommu at a80000 {
> + compatible = "apple,t8103-dart";
> + reg = <0xa80000 0x4000>;
> + interrupt-parent = <&aic>;
> + interrupts = <AIC_IRQ 890 IRQ_TYPE_LEVEL_HIGH>;
> + #iommu-cells = <1>;
> + };
> +
> + usb4_1_nhi: nhi at f00000 {
> + reg = <0xf00000 0x100000>,
> + <0xdb0000 0x30004>;
> + reg-names = "nhi", "pdf";
> + compatible = "apple,t8103-usb4-nhi";
> + interrupt-parent = <&aic>;
> + interrupts = <AIC_IRQ 863 IRQ_TYPE_LEVEL_HIGH>,
> + <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>,
> + <AIC_IRQ 868 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 869 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 870 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 871 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 872 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 873 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 874 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 875 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 876 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 877 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 878 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 879 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 880 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 881 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 882 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 883 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 884 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 885 IRQ_TYPE_LEVEL_HIGH>,
> + <AIC_IRQ 886 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names =
> + "txring0", "txring1", "txring2",
> + "txring3", "txring4", "txring5",
> + "txring6", "txring7", "txring8",
> + "txring9", "txring10", "txring11",
> + "rxring0", "rxring1", "rxring2",
> + "rxring3", "rxring4", "rxring5",
> + "rxring6", "rxring7", "rxring8",
> + "rxring9", "rxring10", "rxring11";
> + iommus = <&usb4_1_dart 1>;
> + /* To be filled by the loader */
> + apple,thunderbolt-drom = [00];
> + };
> + };
> +
> dwc3_1: usb at 502280000 {
> compatible = "apple,t8103-dwc3";
> reg = <0x5 0x02280000 0x0 0xcd00>, <0x5 0x0228cd00 0x0 0x3200>;
>
> --
> 2.55.0
>
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