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 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0EF78C36008 for ; Tue, 25 Mar 2025 04:31:12 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 4971680F70; Tue, 25 Mar 2025 05:31:11 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; secure) header.d=disroot.org header.i=@disroot.org header.b="Vmy+vU4Q"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id C65B881026; Tue, 25 Mar 2025 05:31:09 +0100 (CET) Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id A86F980EEF for ; Tue, 25 Mar 2025 05:31:07 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=ziyao@disroot.org Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 5152725D47; Tue, 25 Mar 2025 05:31:07 +0100 (CET) Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id PbVvy_jIzOLr; Tue, 25 Mar 2025 05:31:06 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1742877066; bh=MKBT+aG2a3VP6FOt4AT844JlGA/jhyKdxgffTLxXxm4=; h=Date:From:To:Subject:References:In-Reply-To; b=Vmy+vU4QyLfGGpyveSf6X3iXUbUt4NG9yTu22u+JycUj8rv30soByNZf+SBfRt67P X7uFXZq7InHGkN/tl7paHdIclF2ufKQXNhxFVUeVz8wv7EhHpJmi5v9bqu2Jvb+vhn 92PkKvSnaUKC0rwX088M35SBwF9d26MDJyBavNgMkQS7bL/6jW9GYUbanCJeMdXVDs SGZu1VueBbQZARcTtTCWNrV5WX+Svsz0XfPs7PALPosV5ESnDF/JRhBXiZKQ7/JfJ7 DxFKY+4Kgt5X5KQhExzgEgOqJGiBoTtWCqtuuxZKAYRugpxaOKfrvFypMCNEaFjeZR TeQB25r56WV3w== Date: Tue, 25 Mar 2025 04:30:58 +0000 From: Yao Zi To: "." , u-boot@lists.denx.de Subject: Re: Problem with UART in U-Boot. Message-ID: References: <884baea7-dbe4-487a-9e14-ccb253166f52@Canary> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean On Sat, Mar 22, 2025 at 06:49:11PM +1000, . wrote: > Device: Orange Pi 5. > > U-Boot is installed in the SPI memory. I connected the device to my laptop via UART, CH340G adapter, 1500000 baud rate. Connected: gnd-gnd, tx-rx, rx-tx. Are you sure your serial adapter works at the same voltage level as your board? It sounds like an electrical/hardware problem instead of fault of U-Boot code. > > As a result, when connecting a more powerful power supply, the output to the terminal works, but the input does not work from the word at all. > > When connecting a less powerful power supply, the input works partially: there was an inscription like "press any key to interrupt startup", I pressed Enter and everything worked, but when I tried to enter something, either question marks (�) were entered, or nothing was entered, or even the text was erased. > > > > When installing EDK2-RK3588 (UEFI) instead of U-Boot, both input and output worked on any power supply, and everything worked fine, the speed was the same — 1500,000 baud, and the same adapter. > > > > It is necessary to install U-Boot. Can you tell me how to fix the input in U-Boot? Version v2025.01. > - 0 ' Thanks, Yao Zi