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Tue, 02 Jun 2026 07:13:29 -0700 (PDT) From: Vitor Soares To: Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Vitor Soares , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] arm64: dts: ti: k3-am62p-verdin: Reserve UART_4 for Cortex-R5F Date: Tue, 2 Jun 2026 15:13:12 +0100 Message-ID: <20260602141311.1366818-7-ivitro@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260602141311.1366818-5-ivitro@gmail.com> References: <20260602141311.1366818-5-ivitro@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Vitor Soares Add a device tree overlay reserving AM62P MCU_UART0 (Verdin UART_4) for use by the Cortex-R5F co-processor. Signed-off-by: Vitor Soares --- arch/arm64/boot/dts/ti/Makefile | 4 ++++ .../boot/dts/ti/k3-am62p5-verdin-uart4-mcu.dtso | 13 +++++++++++++ 2 files changed, 17 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am62p5-verdin-uart4-mcu.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index f2db3c878993..27a56abb1d7f 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -84,6 +84,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-nonwifi-dev.dtb dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-nonwifi-ivy.dtb dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-nonwifi-mallow.dtb dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-nonwifi-yavia.dtb +dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-uart4-mcu.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-wifi-dahlia.dtb dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-wifi-dev.dtb dtb-$(CONFIG_ARCH_K3) += k3-am62p5-verdin-wifi-ivy.dtb @@ -277,6 +278,8 @@ k3-am62p5-sk-csi2-tevi-ov5640-dtbs := k3-am62p5-sk.dtb \ k3-am62x-sk-csi2-tevi-ov5640.dtbo k3-am62p5-verdin-wifi-dev-nau8822-btl-dtbs := k3-am62p5-verdin-wifi-dev.dtb \ k3-am62p5-verdin-dev-nau8822-btl.dtbo +k3-am62p5-verdin-wifi-dev-uart4-mcu-dtbs := k3-am62p5-verdin-wifi-dev.dtb \ + k3-am62p5-verdin-uart4-mcu.dtbo k3-am642-evm-icssg0-dtbs := \ k3-am642-evm.dtb k3-am642-evm-icssg0.dtbo k3-am642-evm-icssg1-dualemac-dtbs := \ @@ -376,6 +379,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-am62p5-sk-csi2-ov5640.dtb \ k3-am62p5-sk-csi2-tevi-ov5640.dtb \ k3-am62p5-verdin-wifi-dev-nau8822-btl.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-am62p5-verdin-uart4-mcu.dtso b/arch/arm64/boot/dts/ti/k3-am62p5-verdin-uart4-mcu.dtso new file mode 100644 index 000000000000..ad5d6a5c17c4 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am62p5-verdin-uart4-mcu.dtso @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright (c) Toradex + * + * Verdin AM62P Cortex-R5F UART + */ + +/dts-v1/; +/plugin/; + +&mcu_uart0 { + status = "reserved"; +}; -- 2.54.0