1. Patchew
  2. linux
  3. View series

[PATCH v3] arm64: dts: ti: k3-j784s4-j742s2-evm: Add overlay to enable USB0 Type-A

Siddharth Vadapalli posted 1 patch 10 months ago 
arch/arm64/boot/dts/ti/Makefile               |  7 +++++
.../ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso  | 29 +++++++++++++++++++
2 files changed, 36 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso
[PATCH v3] arm64: dts: ti: k3-j784s4-j742s2-evm: Add overlay to enable USB0 Type-A
Posted by Siddharth Vadapalli 10 months ago 
The USB0 instance of the USB controller on both the J742S2 EVM and the
J784S4 EVM supports 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, the USB3.1 Gen1 Type C interface is supported on both of the
EVMs. Enable the USB2.0 Type A interface by configuring the USB2.0_MUX_SEL
mux. Additionally, set the Dual-Role Mode to Host since a Type-A interface
is only associated with the Host Mode of operation.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---

Hello,

This patch is based on linux-next tagged next-20250409.

v2 of this patch is at:
https://lore.kernel.org/r/20250226124245.9856-4-s-vadapalli@ti.com/
Changes since v2:
- Rebased patch on next-20250409 and dropped other patches which were
  present in the v2 series.

Regards,
Siddharth.

 arch/arm64/boot/dts/ti/Makefile               |  7 +++++
 .../ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso  | 29 +++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 03d4cecfc001..c7f23fbce660 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -128,6 +128,7 @@ 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-usxgmii-exp1-exp2.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-j784s4-j742s2-evm-usb0-type-a.dtbo
 
 # Boards with J742S2 SoC
 dtb-$(CONFIG_ARCH_K3) += k3-j742s2-evm.dtb
@@ -212,10 +213,14 @@ 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-j742s2-evm-usb0-type-a-dtbs := k3-j742s2-evm.dtb \
+	k3-j784s4-j742s2-evm-usb0-type-a.dtbo
 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-usb0-type-a-dtbs := k3-j784s4-evm.dtb \
+	k3-j784s4-j742s2-evm-usb0-type-a.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 \
@@ -246,8 +251,10 @@ 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-j742s2-evm-usb0-type-a.dtb \
 	k3-j784s4-evm-pcie0-pcie1-ep.dtb \
 	k3-j784s4-evm-quad-port-eth-exp1.dtb \
+	k3-j784s4-evm-usb0-type-a.dtb \
 	k3-j784s4-evm-usxgmii-exp1-exp2.dtb
 
 # Enable support for device-tree overlays
diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso
new file mode 100644
index 000000000000..ba15d72d86d6
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/**
+ * DT Overlay for enabling USB0 instance of USB on J784S4 and J742S2 EVMs for
+ * Host Mode of operation with the Type-A Connector.
+ *
+ * J784S4 EVM Product Link: https://www.ti.com/tool/J784S4XEVM
+ * J742S2 EVM Product Link: https://www.ti.com/tool/J742S2XH01EVM
+ *
+ * Copyright (C) 2025 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;
+		line-name = "USB2.0_MUX_SEL";
+	};
+};
+
+&usb0 {
+	dr_mode = "host";
+};
-- 
2.34.1
Re: [PATCH v3] arm64: dts: ti: k3-j784s4-j742s2-evm: Add overlay to enable USB0 Type-A
Posted by Nishanth Menon 9 months, 3 weeks ago 
Hi Siddharth Vadapalli,

On Wed, 09 Apr 2025 15:38:53 +0530, Siddharth Vadapalli wrote:
> The USB0 instance of the USB controller on both the J742S2 EVM and the
> J784S4 EVM supports 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, the USB3.1 Gen1 Type C interface is supported on both of the
> EVMs. Enable the USB2.0 Type A interface by configuring the USB2.0_MUX_SEL
> mux. Additionally, set the Dual-Role Mode to Host since a Type-A interface
> is only associated with the Host Mode of operation.
> 
> [...]

I have applied the following to branch ti-k3-dts-next on [1].
Thank you!

[1/1] arm64: dts: ti: k3-j784s4-j742s2-evm: Add overlay to enable USB0 Type-A
      commit: bcbc3d40dc62dd616e409b8b18c13d5b55fca6af

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D
Re: [PATCH v3] arm64: dts: ti: k3-j784s4-j742s2-evm: Add overlay to enable USB0 Type-A
Posted by Kumar, Udit 9 months, 3 weeks ago 
On 4/9/2025 3:38 PM, Siddharth Vadapalli wrote:
> The USB0 instance of the USB controller on both the J742S2 EVM and the
> J784S4 EVM supports 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, the USB3.1 Gen1 Type C interface is supported on both of the
> EVMs. Enable the USB2.0 Type A interface by configuring the USB2.0_MUX_SEL
> mux. Additionally, set the Dual-Role Mode to Host since a Type-A interface
> is only associated with the Host Mode of operation.
>
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
> ---
>
> Hello,
>
> This patch is based on linux-next tagged next-20250409.
>
> v2 of this patch is at:
> https://lore.kernel.org/r/20250226124245.9856-4-s-vadapalli@ti.com/
> Changes since v2:
> - Rebased patch on next-20250409 and dropped other patches which were
>    present in the v2 series.
>
> Regards,
> Siddharth.
>
>   arch/arm64/boot/dts/ti/Makefile               |  7 +++++
>   .../ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso  | 29 +++++++++++++++++++
>   2 files changed, 36 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-usb0-type-a.dtso
>
> diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
> [..]index 03d4cecfc001..c7f23fbce660 100644
> +/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;
> +		line-name = "USB2.0_MUX_SEL";
> +	};
> +};
> +
> +&usb0 {
> +	dr_mode = "host";
> +};

Reviewed-by: Udit Kumar <u-kumar1@ti.com>

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.