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arm64: dts: ti: k3-am62-verdin: Reserve UART_4 for Cortex-M4F

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Add a device tree overlay reserving AM62 MCU_UART0 (Verdin UART_4) for
use by the Cortex-M4F co-processor as its debug UART.

Assisted-by: Claude:claude-sonnet-4.6
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260522161105.277519-21-ivitro@gmail.com
Signed-off-by: Nishanth Menon <nm@ti.com>
This commit is contained in:
Vitor Soares
2026-05-22 17:11:12 +01:00
committed by Nishanth Menon
parent a8891ba799
commit ca61bcec3e
2 changed files with 17 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm64/boot/dts/ti/Makefile
View File

@@ -44,6 +44,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-zinnia.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-panel-cap-touch-10inch-dsi.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-panel-cap-touch-10inch-lvds.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-panel-cap-touch-7inch-dsi.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-uart4-mcu.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia-dsi-to-hdmi.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia-panel-cap-touch-10inch-dsi.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia.dtb
@@ -230,6 +231,8 @@ k3-am625-verdin-wifi-dev-nau8822-btl-dtbs := k3-am625-verdin-wifi-dev.dtb \
k3-am625-verdin-wifi-dev-panel-cap-touch-7inch-dsi-dtbs := \
k3-am625-verdin-wifi-dev.dtb \
k3-am625-verdin-panel-cap-touch-7inch-dsi.dtbo
k3-am625-verdin-wifi-dev-uart4-mcu-dtbs := k3-am625-verdin-wifi-dev.dtb \
k3-am625-verdin-uart4-mcu.dtbo
k3-am625-verdin-wifi-mallow-panel-cap-touch-10inch-lvds-dtbs := \
k3-am625-verdin-wifi-mallow.dtb \
k3-am625-verdin-panel-cap-touch-10inch-lvds.dtbo
@@ -337,6 +340,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
k3-am625-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch.dtb \
k3-am625-verdin-wifi-dev-nau8822-btl.dtb \
k3-am625-verdin-wifi-dev-panel-cap-touch-7inch-dsi.dtb \
k3-am625-verdin-wifi-dev-uart4-mcu.dtb \
k3-am625-verdin-wifi-mallow-panel-cap-touch-10inch-lvds.dtb \
k3-am62-lp-sk-hdmi-audio.dtb \
k3-am62-lp-sk-nand.dtb \

13
arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso Normal file
View File

@@ -0,0 +1,13 @@
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
/*
* Copyright (c) Toradex
*
* Verdin AM62 Cortex-M4F debug UART
*/
/dts-v1/;
/plugin/;
&mcu_uart0 {
status = "reserved";
};