From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bmailout2.hostsharing.net (bmailout2.hostsharing.net [83.223.78.240]) (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 A948D33F9 for ; Sun, 26 Oct 2025 09:30:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.223.78.240 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761471039; cv=none; b=Rwhw3ESzZDUXj3zsZ6qAocYZTkNPFKHxRenA0sFPwV11lhtHo2qDkC0qWT1ggkPhFs42hc0aN/8nuHQf/HH8sKw23EM8ba+3b7e8t7fVV4F9BaRW18r0eTG1nWZPd9GuguHjFRImAJFsypbfDUAvO52IyZ4Sz9Wkd5ir+PFf6iY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761471039; c=relaxed/simple; bh=C4EB1KK67bmcOsaxymIluDeLn4phribqLiwOqunO1EA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cY9LadPhcoPNBAyialhshVxM6FmYmTVCEkXmqPm8z8LP65pfjqcUxp6hVSldODj9dngB6Wf/D+xFJYhlo6tpDV6p+sDZmkj344898xszqXxF4TYx9rM3+3ngf3Vy8LyJy/3H2gyyyhI0d5k/zO6rPDl6y9kpSLSaaSBrvWSAJOU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de; spf=none smtp.mailfrom=h08.hostsharing.net; arc=none smtp.client-ip=83.223.78.240 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=h08.hostsharing.net Received: from h08.hostsharing.net (h08.hostsharing.net [IPv6:2a01:37:1000::53df:5f1c:0]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "*.hostsharing.net", Issuer "RapidSSL TLS RSA CA G1" (verified OK)) by bmailout2.hostsharing.net (Postfix) with ESMTPS id 2BA5220083DF; Sun, 26 Oct 2025 10:30:30 +0100 (CET) Received: by h08.hostsharing.net (Postfix, from userid 100393) id 251214A12; Sun, 26 Oct 2025 10:30:30 +0100 (CET) Date: Sun, 26 Oct 2025 10:30:30 +0100 From: Lukas Wunner To: Gerhard Engleder Cc: linux-serial@vger.kernel.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, Gerhard Engleder , Daniel Gierlinger Subject: Re: [PATCH v4 2/2] serial: 8250: add driver for KEBA UART Message-ID: References: <20251023151229.11774-1-gerhard@engleder-embedded.com> <20251023151229.11774-3-gerhard@engleder-embedded.com> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251023151229.11774-3-gerhard@engleder-embedded.com> On Thu, Oct 23, 2025 at 05:12:29PM +0200, Gerhard Engleder wrote: > The KEBA UART is found in the system FPGA of KEBA PLC devices. It is > mostly 8250 compatible with extension for some UART modes. > > 3 different variants exist. The simpliest variant supports only RS-232 > and is used for debug interfaces. The next variant supports only RS-485 > and is used mostly for communication with KEBA panel devices. The third > variant is able to support RS-232, RS-485 and RS-422. For this variant > not only the mode of the UART is configured, also the physics and > transceivers are switched according to the mode. > > Signed-off-by: Gerhard Engleder > Tested-by: Daniel Gierlinger Reviewed-by: Lukas Wunner