From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.mleia.com (mleia.com [178.79.152.223]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA05E29BDBA; Mon, 12 Jan 2026 10:12:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.79.152.223 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768212753; cv=none; b=ingmLZ3deCkl3Dkz6S7/JdsS2t26V3t2yoikeKp5nzdI2RsHMTE6UUY0HV1a+eI/N19wrYX8ZIp/qd/+Yj0hePrEV4/F+TCy4oxJVWtbXmfm4VFh8HdM1pALX/JPVjkMCD+br8BjNEuQnMjElh7OfE2HMqD8wEj4S6SgqORnc7U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768212753; c=relaxed/simple; bh=qVZcFnrNthbxIcajKAMeoZAZ6XhV/2cB/xhUjnVSQlA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=cvBHKOWDb/sAc2OQt7XGi0Yg71nTdQUUSfMLBEydqJY2cDCtYmi9FMbxQ9uR2f9H+shvBo4j9n7RESGR2qr2evEmYSEUjM8XxJdytdfht7Zb6UahY0KKx0/vz8N8dggadS+OMCk5Hf6kpZR0QY/wSHd2m9LxRnbAq/jxGidDA9k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mleia.com; spf=none smtp.mailfrom=mleia.com; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b=tdlqqs2+; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b=tdlqqs2+; arc=none smtp.client-ip=178.79.152.223 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mleia.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=mleia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b="tdlqqs2+"; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b="tdlqqs2+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mleia.com; s=mail; t=1768212401; bh=qVZcFnrNthbxIcajKAMeoZAZ6XhV/2cB/xhUjnVSQlA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=tdlqqs2+zjhDKdcI8o60OZTvU1k68yw80JyRbVZNjHpY4+3EqsmvQ2B/VrLmVkXZv 2LnOTgo7/tcmmm4rbIO0ZKy8o8fWNyga83PndfeAPslGMDB6Y8SYUb0brETTW2Xi+C 11jMik0w4Qzmov8AapwRhp7jevx6Hvu/+qR67VN6IotVjDcoK0fqf14EuHKBn/cSmD avI26sxzf4+PGv7BT8G4XUyp2M4EcsCGh4iHqBrhDK2+qICjRY0mX5LNUTVsGKvGYz ovrG+Vq9l0PFvckdkTgwnagUzX6zQ/00asqIxbY/EfRJNObCvaEgyKYX6zb2C7Mt2X WeuKBOp8FMzsg== Received: from mail.mleia.com (localhost [127.0.0.1]) by mail.mleia.com (Postfix) with ESMTP id 4DD023EBBAC; Mon, 12 Jan 2026 10:06:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mleia.com; s=mail; t=1768212401; bh=qVZcFnrNthbxIcajKAMeoZAZ6XhV/2cB/xhUjnVSQlA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=tdlqqs2+zjhDKdcI8o60OZTvU1k68yw80JyRbVZNjHpY4+3EqsmvQ2B/VrLmVkXZv 2LnOTgo7/tcmmm4rbIO0ZKy8o8fWNyga83PndfeAPslGMDB6Y8SYUb0brETTW2Xi+C 11jMik0w4Qzmov8AapwRhp7jevx6Hvu/+qR67VN6IotVjDcoK0fqf14EuHKBn/cSmD avI26sxzf4+PGv7BT8G4XUyp2M4EcsCGh4iHqBrhDK2+qICjRY0mX5LNUTVsGKvGYz ovrG+Vq9l0PFvckdkTgwnagUzX6zQ/00asqIxbY/EfRJNObCvaEgyKYX6zb2C7Mt2X WeuKBOp8FMzsg== Received: from [192.168.1.100] (91-159-24-186.elisa-laajakaista.fi [91.159.24.186]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.mleia.com (Postfix) with ESMTPSA id A1C1C3EBBA0; Mon, 12 Jan 2026 10:06:40 +0000 (UTC) Message-ID: <7dbce9cc-e043-43ae-8d3a-a20b8ad2a5fb@mleia.com> Date: Mon, 12 Jan 2026 12:06:33 +0200 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: serial: 8250: Explicitly make LPC32xx UARTs compatible with 16550A To: Krzysztof Kozlowski Cc: Greg Kroah-Hartman , Jiri Slaby , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lubomir Rintel , Piotr Wojtaszczyk , devicetree@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20260110024647.3389345-1-vz@mleia.com> <20260110024647.3389345-2-vz@mleia.com> <20260112-hopeful-spiffy-antelope-334765@quoll> From: Vladimir Zapolskiy In-Reply-To: <20260112-hopeful-spiffy-antelope-334765@quoll> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-49551924 X-CRM114-CacheID: sfid-20260112_100641_338297_E5F18793 X-CRM114-Status: UNSURE ( 9.72 ) X-CRM114-Notice: Please train this message. On 1/12/26 11:25, Krzysztof Kozlowski wrote: > On Sat, Jan 10, 2026 at 04:46:46AM +0200, Vladimir Zapolskiy wrote: >> NXP LPC32xx SoC has 4 16550A compatible UARTs with 64 byte TX and RX FIFO >> sizes, and the platform UART hardware is well supported as a standard >> 16550A UART. > > Driver uses dedicated driver/match data, so some context here about > compatibility would be useful. > As the commit message says, 4 LPC32xx UARTs are NS16550A compatible, this is the context of the change. Any bootloader or operating system which does not locate "nxp,lpc3220-uart" device driver shall use the general "ns16550" compatible device driver. -- Best wishes, Vladimir