From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2950C4332B for ; Tue, 23 Feb 2021 13:26:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C9E7A64DF5 for ; Tue, 23 Feb 2021 13:26:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232859AbhBWN0M convert rfc822-to-8bit (ORCPT ); Tue, 23 Feb 2021 08:26:12 -0500 Received: from beige.elm.relay.mailchannels.net ([23.83.212.16]:5214 "EHLO beige.elm.relay.mailchannels.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232853AbhBWN0L (ORCPT ); Tue, 23 Feb 2021 08:26:11 -0500 X-Sender-Id: dreamhost|x-authsender|smtp@contentfirst.com Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id 1659E7E31C8; Tue, 23 Feb 2021 13:25:29 +0000 (UTC) Received: from pdx1-sub0-mail-a45.g.dreamhost.com (100-96-13-41.trex.outbound.svc.cluster.local [100.96.13.41]) (Authenticated sender: dreamhost) by relay.mailchannels.net (Postfix) with ESMTPA id 8AA677E2B6B; Tue, 23 Feb 2021 13:25:28 +0000 (UTC) X-Sender-Id: dreamhost|x-authsender|smtp@contentfirst.com Received: from pdx1-sub0-mail-a45.g.dreamhost.com (pop.dreamhost.com [64.90.62.162]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384) by 100.96.13.41 (trex/6.0.2); Tue, 23 Feb 2021 13:25:28 +0000 X-MC-Relay: Neutral X-MailChannels-SenderId: dreamhost|x-authsender|smtp@contentfirst.com X-MailChannels-Auth-Id: dreamhost X-Suffer-Vacuous: 3b89499900c11f82_1614086728848_406775145 X-MC-Loop-Signature: 1614086728848:1177074307 X-MC-Ingress-Time: 1614086728848 Received: from pdx1-sub0-mail-a45.g.dreamhost.com (localhost [127.0.0.1]) by pdx1-sub0-mail-a45.g.dreamhost.com (Postfix) with ESMTP id 548897F11C; Tue, 23 Feb 2021 05:25:28 -0800 (PST) Received: from industrynumbers.com (pool-100-15-209-187.washdc.fios.verizon.net [100.15.209.187]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: smtp@contentfirst.com) by pdx1-sub0-mail-a45.g.dreamhost.com (Postfix) with ESMTPSA id 958747F13C; Tue, 23 Feb 2021 05:25:24 -0800 (PST) Received: from industrynumbers.com (localhost [127.0.0.1]) by industrynumbers.com (Postfix) with ESMTP id 68CC3282D7A; Tue, 23 Feb 2021 08:25:23 -0500 (EST) Subject: Re: non-standard baud rates with Prolific 2303 USB-serial To: =?UTF-8?B?WWVoLkNoYXJsZXMgW+iRieamrumRq10=?= , Johan Hovold Cc: "linux-serial@vger.kernel.org" , "linux-usb@vger.kernel.org" , Charles Yeh , Joe Abbott References: <3aee5708-7961-f464-8c5f-6685d96920d6@IEEE.org> <0f9caf26-af58-13a9-9947-47bb646f505e@IEEE.org> <43da22ced8e14442bbc8babea77e4ed7@MailHC2.prolific.com.tw> X-DH-BACKEND: pdx1-sub0-mail-a45 From: "Michael G. Katzmann" Message-ID: Date: Tue, 23 Feb 2021 08:25:23 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <43da22ced8e14442bbc8babea77e4ed7@MailHC2.prolific.com.tw> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The markings on the device I have are PL2303TA G19101E CDH81920 ... and yes I had to destroy it to open it 8-( Photo here..... https://photos.app.goo.gl/ontHBzGBbaDV6FWu6 Michael.   On 2/23/21 5:14 AM, Yeh.Charles [葉榮鑫] wrote: > I set 110 bps / 8 data bits/ none parity / 1 stop bit. > I used PL2303TA , I got the data is d5 0e 00 80 00 00 08 on 5.8.0-41 kernel. > Please refer to attached file : PL2303TA.png. > > The divider algorithm is OK on Linux for my test. > > Can you use you PL2303TA board to print log? > What are the differences between the log you printed and the log printed in the attachment?