diff options
| author | Siddharth Vadapalli <s-vadapalli@ti.com> | 2025-09-12 11:50:14 +0530 |
|---|---|---|
| committer | Nishanth Menon <nm@ti.com> | 2025-09-12 14:05:58 +0530 |
| commit | fcfedcb6804caaf18f22016de16d93bf18bbcfdd (patch) | |
| tree | dea8934d4c1d5d0bcf8a9759d7374695ffab3f9b | |
| parent | e53fbf955ea7753ef7970b866ca229abe32d5639 (diff) | |
arm64: dts: ti: k3-j721s2-evm: Add overlay to enable USB0 Type-A
The J721S2-EVM (J721S2-SOM mounted on the J7 Common Processor Board) has
a single instance of USB namely USB0. On the board, USB0 can be enabled
using a single USB interface at a time among the following:
1. USB3.1 Gen1 Type C interface
2. Two USB2.0 Type A interfaces via an on-board USB Hub
By default, USB0 is enabled using the USB3.1 Gen1 Type C interface. Hence,
add a device-tree overlay to allow using USB0 with the USB2.0 Type A
interfaces by configuring the "USB2.0_MUX_SEL" mux. Also, since the Type A
interfaces only connect to USB Devices with USB0 acting as the USB Host,
set the Dual-Role mode for USB0 to Host.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Link: https://patch.msgid.link/20250912062021.2906034-1-s-vadapalli@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
| -rw-r--r-- | arch/arm64/boot/dts/ti/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/ti/k3-j721s2-evm-usb0-type-a.dtso | 28 |
2 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index 28642ef98a32..743115b849a7 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -134,6 +134,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-gesi-exp-board.dtbo k3-j721s2-evm-dtbs := k3-j721s2-common-proc-board.dtb k3-j721s2-evm-gesi-exp-board.dtbo dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm.dtb dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-pcie1-ep.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-usb0-type-a.dtbo # Boards with J722s SoC dtb-$(CONFIG_ARCH_K3) += k3-am67a-beagley-ai.dtb @@ -235,6 +236,8 @@ k3-j721e-sk-csi2-dual-imx219-dtbs := k3-j721e-sk.dtb \ k3-j721e-sk-csi2-dual-imx219.dtbo k3-j721s2-evm-pcie1-ep-dtbs := k3-j721s2-common-proc-board.dtb \ k3-j721s2-evm-pcie1-ep.dtbo +k3-j721s2-evm-usb0-type-a-dtbs := k3-j721s2-common-proc-board.dtb \ + k3-j721s2-evm-usb0-type-a.dtbo k3-j722s-evm-csi2-quad-rpi-cam-imx219-dtbs := k3-j722s-evm.dtb \ k3-j722s-evm-csi2-quad-rpi-cam-imx219.dtbo k3-j722s-evm-csi2-quad-tevi-ov5640-dtbs := k3-j722s-evm.dtb \ @@ -277,6 +280,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-j721e-evm-pcie1-ep.dtb \ k3-j721e-sk-csi2-dual-imx219.dtb \ k3-j721s2-evm-pcie1-ep.dtb \ + k3-j721s2-evm-usb0-type-a.dtb \ k3-j722s-evm-csi2-quad-rpi-cam-imx219.dtb \ k3-j722s-evm-csi2-quad-tevi-ov5640.dtb \ k3-j742s2-evm-usb0-type-a.dtb \ diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-evm-usb0-type-a.dtso b/arch/arm64/boot/dts/ti/k3-j721s2-evm-usb0-type-a.dtso new file mode 100644 index 000000000000..fe4a23efe708 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-j721s2-evm-usb0-type-a.dtso @@ -0,0 +1,28 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/** + * DT Overlay for enabling USB0 instance of USB in the Host Mode of operation + * with the Type-A Connector on the J7 common processor board. + * + * J7 Common Processor Board Product Link: https://www.ti.com/tool/J721EXCPXEVM + * + * Copyright (C) 2025 Texas Instruments Incorporated - https://www.ti.com/ + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/gpio/gpio.h> + +&exp_som { + p0-hog { + /* P0 - USB2.0_MUX_SEL */ + gpio-hog; + gpios = <0 GPIO_ACTIVE_HIGH>; + output-high; + line-name = "USB2.0_MUX_SEL"; + }; +}; + +&usb0 { + dr_mode = "host"; +}; |