The USB0 instance of the USB controller on the J784S4 SoC supports a single USB interface with the possible choices being: 1. USB3.1 Gen1 Type C interface 2. Two USB2.0 Type A interfaces via an on-board USB Hub. Add overlay to enable USB2.0 Type A functionality by: 1. Configuring the "USB2.0_MUX_SEL" mux to enable the USB Hub connected to the two USB2.0 Type A interfaces on the J784S4-EVM. 2. Set the Dual-Role Mode to Host. Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx> --- Hello, This patch is based on linux-next tagged next-20241016. Logs validating USB2.0 Type A interface on the J784S4-EVM: https://gist.github.com/Siddharth-Vadapalli-at-TI/41bbcb39f331aa3bb6fd4dd694015189 Regards, Siddharth. arch/arm64/boot/dts/ti/Makefile | 4 +++ .../arm64/boot/dts/ti/k3-j784s4-evm-usb2.dtso | 26 +++++++++++++++++++ 2 files changed, 30 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-evm-usb2.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index bcd392c3206e..fc75d0365558 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -124,6 +124,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-pcie0-pcie1-ep.dtbo dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-quad-port-eth-exp1.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-usb2.dtbo dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-usxgmii-exp1-exp2.dtbo # Build time test only, enabled by CONFIG_OF_ALL_DTBS @@ -200,6 +201,8 @@ k3-j784s4-evm-pcie0-pcie1-ep-dtbs := k3-j784s4-evm.dtb \ k3-j784s4-evm-pcie0-pcie1-ep.dtbo k3-j784s4-evm-quad-port-eth-exp1-dtbs := k3-j784s4-evm.dtb \ k3-j784s4-evm-quad-port-eth-exp1.dtbo +k3-j784s4-evm-usb2-dtbs := k3-j784s4-evm.dtb \ + k3-j784s4-evm-usb2.dtbo k3-j784s4-evm-usxgmii-exp1-exp2-dtbs := k3-j784s4-evm.dtb \ k3-j784s4-evm-usxgmii-exp1-exp2.dtbo dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ @@ -227,6 +230,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-j721s2-evm-pcie1-ep.dtb \ k3-j784s4-evm-pcie0-pcie1-ep.dtb \ k3-j784s4-evm-quad-port-eth-exp1.dtb \ + k3-j784s4-evm-usb2.dtbo \ k3-j784s4-evm-usxgmii-exp1-exp2.dtb # Enable support for device-tree overlays diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm-usb2.dtso b/arch/arm64/boot/dts/ti/k3-j784s4-evm-usb2.dtso new file mode 100644 index 000000000000..02f97819aa82 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm-usb2.dtso @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/** + * DT overlay for USB2.0 Type A functionality on J784S4-EVM. + * + * J784S4 EVM Product Link: https://www.ti.com/tool/J784S4XEVM + * + * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/ + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/gpio/gpio.h> + +&exp2 { + p12-hog { + /* P12 - USB2.0_MUX_SEL */ + gpio-hog; + gpios = <12 GPIO_ACTIVE_HIGH>; + output-high; + }; +}; + +&usb0 { + dr_mode = "host"; +}; -- 2.40.1
