From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B37143B1EFC for ; Fri, 22 May 2026 13:20:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779456053; cv=none; b=WotDZ3IJ5Y1GOsJtOF5OKhFjwD4A67/ya8igpSNFrg/3z0iOCYg2jdjCtItBo57nuSo0Y3DUd+g5Xd5VLks0N9KYSnVG/UlzgffUjttN70akHmx1YJ5TYy/rm1tiwbGDaHypF3RXi2QI6Ak+hMUGh3SmsLectY2dgeVDLy+wyqk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779456053; c=relaxed/simple; bh=Onfdz/xscxQ/YvwLu1pxDVtAauf991A7gIDb6FNuNSA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UWjvREvEn1V0idt9l15M415VBZWNL2oYCJ7KxNfBVrwlsSowtNhORHraLlZXAqV23oMFO77kpW9qSDNTMrrhYQCVCjVzfd9ZIysozyc8Oq31UJ8toSK1TpejoCrOCbRwPCK8k7d1H5vgu1GFEl/Fb6R0g6lbXEVuITAIIvGKuZI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=OapLeajH; arc=none smtp.client-ip=209.85.128.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="OapLeajH" Received: by mail-wm1-f51.google.com with SMTP id 5b1f17b1804b1-49040362e4aso13421905e9.0 for ; Fri, 22 May 2026 06:20:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1779456050; x=1780060850; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=RP+CltVi6jUCZJal0Anzdw8j6V9ipqNLat7Pdw8ZHRU=; b=OapLeajHY+pPMYnPtBtOcuJMbj2yJ2fixTWV+oH9Paet6ORjC+1VsEWYGcvlEI+U2O almowyGX1W2qGFeMVY9KDP5grmdPxwQl8EsZg5wen1t10oluRgPvupgl6fonmUrzNw+F X4qlsyvBZt8LrEUlszidev/7Dg3B1hwRRcla8fArupkBu148wgKZVSjt7Z7xAlDKZV00 F7Z8TKRf6c53pyVt08TFBCN5cKADfBU6IxkNwf4m+7vlHmcQ5pQt5X9YsytrIULABjGP Jlqjp0Le57gQLHauO6yOsDRibJDHnAERXa2aILEoTFUBo7+MpVHpWSWAkASMJEIjWlJ8 X99w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779456050; x=1780060850; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=RP+CltVi6jUCZJal0Anzdw8j6V9ipqNLat7Pdw8ZHRU=; b=X1m1yeIJOQCY6b58DEz5/AVihImOL4S9pk0qRhmNWt9djmeUUKxd49LDyv0HHxlujQ EB72Kr3rlsAWASGP1GhGx5vuiSn1m4tmyxxXCYzTiUAVw/j685xkJW8Vq13AFRJXXayW 48T0ZR3d90KJCsQFe8KQ8GGvVkJFSq5Dh5hP8ocKXuW/mE/xtD0Pq1rYczAyp7hLUKWH diaez1PRpuEMI2RvpHCAYytZ0JKtfj5ncpjztjUuHsc/NGIF4oI5dqeOLkzG5vxxx7iU RfCURI8MYdyaanyGuyBDDtwQoh71+flzJUshRwFXZq1Sac2xyD+psoJ9PLaXMLRttM/M lfqA== X-Forwarded-Encrypted: i=1; AFNElJ/s8TDPowCxiIaLq7z4mpti1zJ7XGsnTB5QGLp5JBbb9db8DdiwhPhgFTfJRMFGO93YVHaabBqSXg5+@vger.kernel.org X-Gm-Message-State: AOJu0YwsNs8QHVMSnAEQ3qGUkQnXaHtpig018vnUkWJs29wuypb7vSGI oE0td1FYd6P7nUrGPOM/JmVAqPXK20wH5g4GwDU7I+BR1i11A8TQV1Nl X-Gm-Gg: Acq92OGz+wkPfTOiqpWAZHKg4zbOFkdVW+v2BybGd9Mhknt2pi1iRKoTwsU+aC1ciip q3l7C5tWzA7EV9UUHTU5pIn2IzR9Iosqe5+vr+vtz8aRw6mpKYUjJG/9O7LanOWC4p+Tx8m9eP6 pfpNZr6tWsIV3aOv7S7FX0HZJlXqHvXtIszEnHc7JwxNaAuh77xCNxqjedHBaW0pdOZzzXBDNFA gdU1+5PIvUO178kR3Z5SpWtnNJR/Zxb+74Wj11ujOKedKgzG6IaeN1FN+A14MNEDxlykxluQ88e bf3+g5QYxIvJD7a9RwbT2bWYQ3kzap52Rak3A4NcnFrJYryQcr8tv1VyQgt5LJSRzGLw5lQQpCa j+M4YeRlgpIyODfPaeknsEIMVAkWRMxwpm4rxJ5Fd2OA2Ziag8F8Kik1gbXzRFFZVoTjjtPape5 USuGgf4JqtrLbb3NbYIFM6S758LzWRI3YobPf6Nlr/cA== X-Received: by 2002:a05:600c:4510:b0:48f:d5a0:284e with SMTP id 5b1f17b1804b1-490428e03b8mr49601195e9.28.1779456049615; Fri, 22 May 2026 06:20:49 -0700 (PDT) Received: from vitor-nb (dsl-113-208.bl27.telepac.pt. [176.79.113.208]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-490454a0cd5sm52220755e9.10.2026.05.22.06.20.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 May 2026 06:20:49 -0700 (PDT) From: Vitor Soares To: Laurent Pinchart , Neil Armstrong , Jessica Zhang , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Lad Prabhakar , Thierry Reding Cc: Vitor Soares , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 08/11] arm64: dts: ti: k3-am62-verdin: Reserve UART_4 for Cortex-M4F Date: Fri, 22 May 2026 14:20:21 +0100 Message-ID: <20260522132014.226721-21-ivitro@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260522132014.226721-13-ivitro@gmail.com> References: <20260522132014.226721-13-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 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 --- 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