From: Vitor Soares <ivitro@gmail.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Jessica Zhang <jesszhan0024@gmail.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Nishanth Menon <nm@ti.com>,
Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
Thierry Reding <thierry.reding@gmail.com>,
Sam Ravnborg <sam@ravnborg.org>
Cc: Vitor Soares <vitor.soares@toradex.com>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1 09/15] arm64: dts: ti: k3-am62-verdin: Reserve UART_4 for Cortex-M4F
Date: Thu, 21 May 2026 16:00:45 +0100 [thread overview]
Message-ID: <20260521150038.103538-26-ivitro@gmail.com> (raw)
In-Reply-To: <20260521150038.103538-17-ivitro@gmail.com>
From: Vitor Soares <vitor.soares@toradex.com>
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>
---
arch/arm64/boot/dts/ti/Makefile | 4 ++++
.../boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso | 13 +++++++++++++
2 files changed, 17 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index a1083c0b2502..31c9bc1d48b1 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -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 \
diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso b/arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso
new file mode 100644
index 000000000000..e263809cdf74
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso
@@ -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";
+};
--
2.54.0
next prev parent reply other threads:[~2026-05-21 15:01 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-21 15:00 [PATCH v1 00/15] arm64: dts: ti: k3-am62-verdin: Add display and peripheral overlays Vitor Soares
2026-05-21 15:00 ` [PATCH v1 01/15] dt-bindings: display: panel: Move Logic Technologies LT170410-2WHC to LVDS Vitor Soares
2026-05-21 15:26 ` sashiko-bot
2026-05-21 16:56 ` Conor Dooley
2026-05-21 15:00 ` [PATCH v1 02/15] arm64: dts: ti: k3-am62-verdin: Add Toradex DSI to LVDS adapter with 10.1" display Vitor Soares
2026-05-21 15:00 ` [PATCH v1 03/15] arm64: dts: ti: k3-am62-verdin: Add Toradex Capacitive Touch Display 10.1" LVDS Vitor Soares
2026-05-21 15:30 ` sashiko-bot
2026-05-21 15:00 ` [PATCH v1 04/15] dt-bindings: vendor-prefixes: Add Riverdi Vitor Soares
2026-05-21 16:54 ` Conor Dooley
2026-05-21 15:00 ` [PATCH v1 05/15] dt-bindings: display: panel-lvds: Add Riverdi RVT70HSLNWCA0 and RVT101HVLNWC00 Vitor Soares
2026-05-21 16:57 ` Conor Dooley
2026-05-21 15:00 ` [PATCH v1 06/15] arm64: dts: ti: k3-am62-verdin: Add Toradex Capacitive Touch Display 10.1" DSI Vitor Soares
2026-05-21 15:25 ` sashiko-bot
2026-05-21 15:00 ` [PATCH v1 07/15] arm64: dts: ti: k3-am62-verdin: Add Toradex Capacitive Touch Display 7" DSI Vitor Soares
2026-05-21 15:23 ` sashiko-bot
2026-05-21 15:00 ` [PATCH v1 08/15] arm64: dts: ti: k3-am62-verdin: Add NAU8822 Bridge Tied Load Vitor Soares
2026-05-21 15:00 ` Vitor Soares [this message]
2026-05-21 15:00 ` [PATCH v1 10/15] arm64: dts: ti: k3-am62-verdin: Add Toradex OV5640 CSI Cameras Vitor Soares
2026-05-21 15:00 ` [PATCH v1 11/15] arm64: dts: ti: k3-am62-verdin: Add Toradex Verdin Mezzanine CAN Vitor Soares
2026-05-21 15:00 ` [PATCH v1 12/15] arm64: dts: ti: k3-am62-verdin: Add Mezzanine with Toradex Display 10.1" LVDS Vitor Soares
2026-05-21 15:00 ` [PATCH v1 13/15] dt-bindings: display: panel-lvds: Add dual-channel LVDS support Vitor Soares
2026-05-21 16:59 ` Conor Dooley
2026-05-22 6:55 ` Krzysztof Kozlowski
2026-05-22 7:34 ` Francesco Dolcini
2026-05-21 15:00 ` [PATCH v1 14/15] dt-bindings: display: panel-lvds: Add LG LP156WF1 Vitor Soares
2026-05-21 15:27 ` sashiko-bot
2026-05-21 16:52 ` Conor Dooley
2026-05-21 16:54 ` Conor Dooley
2026-05-22 6:53 ` Krzysztof Kozlowski
2026-05-21 15:00 ` [PATCH v1 15/15] arm64: dts: ti: k3-am62-verdin: Add Mezzanine with LG LP156WF1 LVDS panel Vitor Soares
2026-05-21 15:46 ` sashiko-bot
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