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Thu, 16 Jul 2026 11:43:17 -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 v2 3/3] arm64: dts: ti: k3-am62x-verdin: Share UART_4 MCU reservation overlay Date: Thu, 16 Jul 2026 19:43:02 +0100 Message-ID: <20260716184300.85413-8-ivitro@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260716184300.85413-5-ivitro@gmail.com> References: <20260716184300.85413-5-ivitro@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Vitor Soares 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 --- 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