From: Vitor Soares <ivitro@gmail.com>
To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: Vitor Soares <vitor.soares@toradex.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/3] arm64: dts: ti: k3-am62x-verdin: Share UART_4 MCU reservation overlay
Date: Thu, 16 Jul 2026 19:43:02 +0100 [thread overview]
Message-ID: <20260716184300.85413-8-ivitro@gmail.com> (raw)
In-Reply-To: <20260716184300.85413-5-ivitro@gmail.com>
From: Vitor Soares <vitor.soares@toradex.com>
Verdin AM62 and AM62P both expose mcu_uart0 as Verdin UART_4, and the
reservation needed when this UART is used by the MCU firmware is
identical on both SoMs.
Rename the AM625-specific overlay added in commit ca61bcec3e8a ("arm64:
dts: ti: k3-am62-verdin: Reserve UART_4 for Cortex-M4F") to a common
k3-am62x-verdin overlay and use it for both AM625 and AM62P5 Verdin
combined DTBs. This avoids carrying identical SoC-specific overlays for
each remoteproc firmware/peripheral combination.
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
---
arch/arm64/boot/dts/ti/Makefile | 9 +++++++--
...din-uart4-mcu.dtso => k3-am62x-verdin-uart4-mcu.dtso} | 2 +-
2 files changed, 8 insertions(+), 3 deletions(-)
rename arch/arm64/boot/dts/ti/{k3-am625-verdin-uart4-mcu.dtso => k3-am62x-verdin-uart4-mcu.dtso} (69%)
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 8541e43d24b7..874577298d6c 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -48,7 +48,6 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-ov5640.dtbo
dtb-$(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
@@ -98,6 +97,9 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-csi2-tevi-ov5640.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-csi2-imx219.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-hdmi-audio.dtbo
+# Common overlays for Verdin AM62 and AM62P family of boards
+dtb-$(CONFIG_ARCH_K3) += k3-am62x-verdin-uart4-mcu.dtbo
+
# Boards with AM64x SoC
dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am642-evm-icssg0.dtbo
@@ -248,7 +250,7 @@ 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-am62x-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
@@ -283,6 +285,8 @@ k3-am62p5-verdin-wifi-dev-ov5640-24mhz-dtbs := k3-am62p5-verdin-wifi-dev.dtb \
k3-am62p5-verdin-ov5640-24mhz.dtbo
k3-am62p5-verdin-wifi-dev-ov5640-dtbs := k3-am62p5-verdin-wifi-dev.dtb \
k3-am62p5-verdin-ov5640.dtbo
+k3-am62p5-verdin-wifi-dev-uart4-mcu-dtbs := k3-am62p5-verdin-wifi-dev.dtb \
+ k3-am62x-verdin-uart4-mcu.dtbo
k3-am642-evm-icssg0-dtbs := \
k3-am642-evm.dtb k3-am642-evm-icssg0.dtbo
k3-am642-evm-icssg1-dualemac-dtbs := \
@@ -384,6 +388,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
k3-am62p5-verdin-wifi-dev-nau8822-btl.dtb \
k3-am62p5-verdin-wifi-dev-ov5640-24mhz.dtb \
k3-am62p5-verdin-wifi-dev-ov5640.dtb \
+ k3-am62p5-verdin-wifi-dev-uart4-mcu.dtb \
k3-am642-evm-icssg0.dtb \
k3-am642-evm-icssg1-dualemac.dtb \
k3-am642-evm-icssg1-dualemac-mii.dtb \
diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso b/arch/arm64/boot/dts/ti/k3-am62x-verdin-uart4-mcu.dtso
similarity index 69%
rename from arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso
rename to arch/arm64/boot/dts/ti/k3-am62x-verdin-uart4-mcu.dtso
index e263809cdf74..a3b50efbe52b 100644
--- a/arch/arm64/boot/dts/ti/k3-am625-verdin-uart4-mcu.dtso
+++ b/arch/arm64/boot/dts/ti/k3-am62x-verdin-uart4-mcu.dtso
@@ -2,7 +2,7 @@
/*
* Copyright (c) Toradex
*
- * Verdin AM62 Cortex-M4F debug UART
+ * Verdin AM62 and AM62P UART_4 reserved for the MCU co-processor
*/
/dts-v1/;
--
2.54.0
prev parent reply other threads:[~2026-07-16 18:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-16 18:42 [PATCH v2 0/3] arm64: dts: ti: k3-am62p-verdin: Add device tree overlays Vitor Soares
2026-07-16 18:43 ` [PATCH v2 1/3] arm64: dts: ti: k3-am62p-verdin: Add NAU8822 Bridge Tied Load Vitor Soares
2026-07-16 18:43 ` [PATCH v2 2/3] arm64: dts: ti: k3-am62p-verdin: Add Toradex OV5640 CSI Cameras Vitor Soares
2026-07-16 18:43 ` Vitor Soares [this message]
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